2a YEN ee COM ASO VEL EOE AAAS RS: ASS i penne RL SON ANON ROC SANG TG AS . ANN \ wy ‘i AAAS ARAN RANA S NY AA Prats : SERRA — RNA ne AR CAS Se ECR EN 4, os Spe Mae iia ie te navi sah; tate Cieolt eat SPU Mini ANY bathe ih reali the He NERS nt hs aSrary Dears tie dae ee gota fall tacit ae ase aE ee eee ae nectar meee REE e SS tae fee ee 4 ORE ETO eC RTERIT, oe lia iin TELEGRAPHIC DETERMINATION LONGITUDES MEXICO AND CENTRAL AMERICA AND ON THE WEST COAST OF SOUTH AMERICA, EMBRACING THE MERIDIANS OF VERA CRUZ; GUATEMALA; LA LIBERTAD, SALVADOR; PAITA; LIMA; ARICA; VALPARAISO; AND THE ARGENTINE NATIONAL OBSERVATORY AT CORDOBA; WITH THE LATITUDES OF THE SEVERAL SEA-COAST STATIONS. BY LIEUT. COMMANDER CHARLES HENRY DAVIS, AND LIEUTS. JOHN ALEXANDER é . NORRIS AND CHARLES LAIRD, U.S. N.; + . WITH THE CO-OPERATION OF BENJAMIN APTHORP GOULD, LL. D., DIRECTOR OF THE ARGENTINE NATIONAL OBSERVATORY, AND MILES ROCK, CHIEF OF THE GUATEMALA BOUNDARY COMMISSION. PUBLISHED BY ORDER OF CAPTAIN J. G. WALKER, U.S.N,, CHIEF OF THE Cae OF NAVIGATION, NAVY DEPARTMENT. ee? WASHINGTON: GOVERNMENT PRINTING OFFICE 1885. 11959 D L CONTENTS. INTRODUCTION. Page. GENERAL INTRODUCTIONS = 24 22-sesen eeaenel es Ghieweonieat ou aeoatamues cs se wares oe eee eats Cee, aeeen aes 5 DESCRIPTION OF THE STATIONS ...... 0-020 eee ee cence wee eee ce ee ee cee e ee ene hi Brae ee eet dramtivew idee 10 DESCRIPTION OF THE INSTRUMENTS ..... 22-222 oo eee eee ee en ce ee cee nee ne seen cece cece ee ceeees 15 INSTRUMENTAICCONSTANIS: oc1c2 5 eicrcie scan Ging 2h creaid Sk ar Aaa alos. sic aaieeka weaned emma Male misma Saunas weieisiomseceas 17 METHODS OF OBSERVATION (22.0205 socccusineceumcoee aedde totGendsew ses seed ceeees aomeeneye aialaveegaiodr ious Saauetcrats 19 PERSONAT EQUATION: {ccs cie-cte ote csaiereiatssosenciniataneie miners s Ge eee eee we ceiee wield Releie eee cee tee aeaeee 28 METHODS OF REDUCTION: 22:2 se%5e¢ sie sic e's eo gigisiciclal curiepewnig woes omwae eee ee Ne elaw sey we ests le chal deetetioe mre telaie 33 OBSERVATIONS. OBSERVATIONS FOR TIME ......-------2eeee cone ee eee ee eee boa asia b Scea-siseds> Gene Segue ee euNes Sedees amd cease 41 CHRONOMETER: COMPARIG ONS: ccs sgucd 56. c2eoieccctept eee bien di elmicrercieiarcie dds, wlan Sinies so ieiae Beceislete aiera isles dbiaiersieieieieisiereraveioisiccs simib 8L OBSERVATIONS FOR LATITUDE ..... ..--.----. 2-0-0) eee eens ec aden teciaes Lenry bye Situal ciate cdysa a otint Gio cinternisesnee 119 OBSERVATIONS FOR RELATIVE PERSONAL EQUATION .... 1-22.05 5 cee cee trees cee eee eee Seaimies Mheae eects 127 RESULTS. DATA FURNISHED BY Dr. B. A. GOULD .-......--+-.------ ------ SPER Ret med esac ee Saad sae ee seme nie seca 142 FINAL CHRONOMETER' CORRECTIONS oo: score 5 ccjasereteiie cicieleinjaeiaicieicjnieseraiejeieieveleniaa.e pie wieje 9 Sdnare\ssein “aiaseieceioipinuecalaia, sisielei sii 144 DIFFERENCES OF LONGITUDE, DEDUCED FROM EXCHANGE OF TIME SIGNALS....------ .--- e200 cee eee cece eee eee 147 RESULTING LATITODES: AND LONGITUDES 42.20 2se-cce esis Wes Sie wales See SS SLE diene Wisieielaie Suwa EEE bela eateteiats 149 INTRODUCTION, GENERAL INTRODUCTION. Since the year 1874 the Bureau of Navigation of the Navy Department has carried on a continuous system of measurements of differences of longitudes by means of ocean telegraph cables, and has thus established secondary meridians in various parts of the world, which serve as exact references to surveyors and hydrographers. This work began under charge of Lieut Commander F. M. Green in the West Indies and Central America, the meridian of Panama being included in the work of the first expedition.’ Then followed a chain of measurements from the Royal Observatory at Greenwich, whose meridian distance from Washington had been determined by tele- graphic measurements made by the U. 8. Coast and Geodetic Survey, to the east coast of South America.’ And later the various points in the China seas were determined with reference to Wladiwostok and Madras.* In continuation of this work an expedition was formed early in 1883 to carry the same system of measurements over the cables of the Mexican and Central and South American Companies and the West Coast of America Company, which extend from Galveston in the United States to Vera Cruz, and from Salina Cruz in Mexico in an unbroken line to Valparaiso in Chili. Lieut. Commander C. H. Davis was placed in charge of this work, and discretionary orders were given him to select such points on the lines of cable as were most advantageous for astronomical observations and most important geographically; to measure the differences of longitude between these points and to determine their latitudes; and to connect his chain of measurements from Panama, on the West Coast of South America, with the meridian of the national Argentine Observatory at Cordoba, the terminal point of the chain of measurements already made on the East Coast of South America; and by closing a great polygon‘ 1 Report on the Telegraphic Determination of Dilferences of Longitudes in the West Indies and Central America, by Lieut. Commander F. M. Green. Hydrographic Office,,Washington. 1877. 2Telegraphic Determination of Longitudes on the East Coast of South America, by Lieut. Commanders F. M. Green and C. H. Davis. and Lieut. J. A. Norris, in 1878 and 1879. Bureau of Navigation, Washington. 1880. ®Telegraphic Determination of Longitudes in Japan, China, and the East Indies, by Lieut. Commanders F. M. Green and C. H. Davis, and Lieut. J. A. Norris, in 1881 and 1882. Bureau of Navigation, Washington. 1883. 4The sides of this polygon are as follows: Greenwich-Washington; Washington-Key West, measured by the U.S. Coast and Geodetic Survey; Key West-Havana; Havana-Santiago; Santiago-Kingston ; Kingston—Aspinwall ; Aspinwall-Panama; Panama-Paita; Paita-Arica; Arica-Valparaiso, measured by officers of the U. 8S. Navy; Val- paraiso-Cordoba, measured by the director of the Argentine National Observatory in co-operation with officers of the U.S. Navy; Cordoba-Buenos Aires, measured by the director of the Argentine National Observatory ; Buenos Aires- Montevideo; Montevideo-Rio de Janeiro; Rio de Janeiro-Bahia; Bahia-Pernambuco; Pernambuco-Saint Vincent; Saint Vincent-Funchal; Funchal-Lisbon, measured by officers of the U. 8. Navy; and Lisbon-Greenwich, measured by the Astronomer Royal in co-operation with officers of the U.S. Navy. 3 6 TELEGRAPHIC DETERMINATION OF LONGITUDES of meridian distances, all measured by American astronomers following the same methods, determine a new value for the longitude of the Cordoba Observatory, the degree of whose accordance with the one already found would be a measure of the accuracy of the whole work. The expedition was composed of the following named officers: Lieut. Com- mander C. H. Davis, in charge; Lieut. J. A. Norris; Lieut. Charles Laird; Ensign William G. David. Mr. David resigned in August, 1883, and his place was filled by Lieut. F. F. Fletcher. The labors of the expedition commenced with the measurement between Galveston and Vera Oruz. Arrangements having been made with the Telegraph Companies, viz: The Mexican and Central and South American Companies of New York, and the West Coast of America Telegraph Company, of London, who generously placed their lines at the disposal of the Government for the free transmission of time signals and of such correspondence as related strictly to the work, and permission having been obtained from the several Governments, through the Department of State, to land instruments and erect observatories at their respective ports, the whole party of officers left Wash- ington on the 11th of March, 1883, and proceeded to Galveston by rail, the instru- ments having been previously shipped from New York to Galveston by water. Lieutenant Norris remained at Galveston, with Lieutenant Laird as his assistant, and Lieutenant-Commander Davis, accompanied by Ensign David, sailed from Gal- veston for Vera Cruz on the 19th of March, taking with him the necessary instruments, and arrived at Vera Cruz on the 22d of March. Lieutenant Norris had in the mean time built the pier for his transit instrument and erected his observatory, with the per- mission of the city authorities, in the public square at Galveston, near the spot occu- pied by the U.S Coast and Geodetic Survey in 1868, and within sight of the tower of the cathedral, the point fixed as a reference in that determination of the longitude of Galveston. Having made the necessary arrangements with the Mexican authorities Lieutenant-Commander Davis erected his observatory at Vera Cruz in Fort Concep- cion at the north end of the town and within convenient distance of the telegraph office, and successful measurements were effected between the two stations on the nights of March 31, April 1, 2, 6, 9, and 11. Observations for latitude were made at Vera Cruz by Lieutenant-Commander Davis on the nights of April ro, 11, and 14. It had, been the intention to make a double measurement of the difference of longi- tude between Vera Cruz and Galveston, the observers exchanging stations after the first complete measurement, with the object of determining the relative personal equa- tion between Messrs. Davis and Norris; but the delays caused by foggy weather at Galveston, and by the necessary preliminary arrangements with the Mexican authori- ties at Vera Cruz, together with the prevalence of yellow fever at Vera Cruz and con- sequent quarantine at New Orleans and Galveston, with stoppage of all direct commu- nication with those ports, made it inadvisable to order the party at Galveston to Vera Cruz, and Lieutenant-Commander Davis took advantage of the last trip of the regular steamer to return to Galveston, arriving there with his party and instruments on April 27. Observations were made in the observatory at Galveston by Messrs. Davis and Norris for the determination of their relative personal equation on the nights of April 30, May IN MEXICO AND CENTRAL AND SJUTH AMERICA, 7 1 and 2. The instruments were then packed and shipped by water to the New York navy-yard, and the whole party returned to Washington by rail, arriving there on the 1oth of May. The summer of 1883 was occupied in reducing the observations made at Galveston and Vera Cruz. Some necessary repairs and additions were made to the instruments of each party. Ensign William G. David resigned in August, and Lieut. F. F. Fletcher was assigned by the Navy Department to take his place. In September the expedition again took the field, sailing from New York on the 2oth by the steamer City of Para for Aspinwall. Close connection was made at Pan- ama with the Pacific Steam Navigation Company’s steamer for the south, and the expedition arrived at Lima on the 9th of October. Here adelay of four days occurred waiting for the steamer for Chili, but advantage was taken of this opportunity to call on the United States minister to Peru, the Hon. 8. L. Phelps, and communicate to him the objects and requirements of the expedition. Lieutenant-Commander Davis, with Mr. Phelps, called on Admiral Lynch, the commander-in-chief of the Chilian army of occupation in Peru, and he gave the necessary orders to his subordinates at Callao and Arica for the dispatch of the instruments in the custom-houses at those ports. Leaving Lima on the 13th of October, the party proceeded south by the Chilian steamer Cacha- poal. Lieutenant Norris, with Lieutenant Fletcher as his assistant, landed with his instruments at Arica on the 16th of October, and Lieutenant-Commander Davis, with Lieutenant Laird, proceeded to Valparaiso by the same steamer, arriving on the 20th of October. Vexatious delays were experienced at both these places. At Arica theChilian military commandant easily permitted the landing and dispatch of the instruments and the erection of the observatory on the hillside back of the town; but whea Lieutenant. Norris undertook to extend a wire from the observatory to the telegraph office for the exchange of signals with Valparaiso, his proceedings were interrupted and permission was denied him. Nor was it until Lieutenant-Commander Davis could obtain the official sanction of the Chilian Government at Santiago, through the United States minister, that the necessary connection at Arica could be made. Much valuable time was lost in Valparaiso through delays in the custom-house and with the local authorities and telegraph company. Furthermore, the weather at Arica, as on the whole coast of Peru, is generally bad for astronomical work. Fogs prevail, and clear nights are the excep- tion. Notwithstanding these difficulties, however, the measurement between Valparaiso and Arica was effected on the nights of November 13, 14, 16, and 17. Lieutenant- Commander Davis had, on his first arrival at Valparaiso, dispatched a telegram to Dr. B. A. Gould, director of the Argentine National Observatory at Cordoba, notifying him of his arrival and readiness to proceed with the measurement between Valparaiso and Cordoba. Dr. Gould was, however, absent, and the assistant in charge at the Cordoba Observatory was unwilling to undertake the work until the director’s return, which did not take place until November 20. Delays occurred in the measurement between Cordoba and Valparaiso. A storm devastated the Observatory grounds at Cordoba and interrupted communication for several days, and the lines of the Transandine Tel- egraph Company, which had kindly granted the use of its wires on the same condi- tions as those agreed on with the cable company, were constantly down, and direct 8 TELEGRAPHIC DETERMINATION OF LONGITUDES communication with Cordoba was then impossible. The measurement between Val paraiso and Cordoba was accomplished on the nights of December 7, 11, 17, and 22. The weather being uniformly clear at Valparaiso, advantage was taken of every night when time work was not done to observe for latitude. The latitude observations were made by Lieutenant Laird. Lieutenant Norris, having completed the observations for latitude at Arica, sailed for Callao on the 24th of November, with his party and instruments, and arrived at Lima on the 28th. He proceeded to erect his observatory for the measurement between Lima and Valparaiso. In this measurement it was necessary to establish a transmitting station at Chorillos, about nine miles from Lima, the landing place of the cable. For this purpose Lieutenant Fletcher was sent to Chorillos with a cable key and mirror. The chronograph in the observatory at Lima was placed in circuit, through the land line, with Lieutenant Fletcher’s key at Chorillos, so that every sig- nal sent and received by him at Chorillos was recorded on the Lima chronograph. The necessary verbal communication between the officers at Lima and Chorillos was effected by using the Myers code. The measurement between Valparaiso and Lima was accomplished on the nights of December 17, 18, 20, 24, and 26. Nor was this a day too soon, for with the excep- tion of a few nights in November and December the weather is always overcast at Lima, and not another clear night had occurred there up to the 14th of February, when Lieutenant-Commander Davis passed through Lima on his way north, and it is fair to presume that none occurred after that date until the following summer. Lima is probably the worst place in the world for astronomical work. The event proved the advantage of making the measurement between Valparaiso and Lima instead of between Arica and Lima, as would have been attempted had the measurement between Valparaiso and Cordoba been finished in time to allow Lieutenant-Commander Davis to arrive at Arica at the time of Lieutenant Norris’s arrival at Lima. The weather in Valparaiso was uniformly clear. Had both parties had to contend against a preva- lence of cloudy nights the measurement would probably not have been accomplished. Lieutenant Norris took the utmost advantage of the few clear nights he enjoyed at Lima, and made observations for latitude on the same nights on which he observed for time. Lieutenant-Commander Davis left Valparaiso on the 5th of January, 1884, and arrived at Arica on the 12th The pier was built and the observatory erected on ground in the rear of and near to the telegraph office, as it was feared that if Lieuten- ant Norris’s pier, which he had left standing, was again used, the same difficulty would occur with the authorities in connecting the observatory with the telegraph office. The two piers were connected by a careful triangulation. Lieutenant Norris, with his party, arrived at Paita from Lima on the 6th of January, and built his pier in the yard of the telegraph office. The measurement between Paita and Arica was effected on the nights of February 2 and 4, two independent determinations of the difference of longitude, using different chronometers at each station, being made on the latter night. At both these stations the weather was generally bad, and the consequent delay serious and disheartening. Lieutenant Norris observed for latitude at Paita. e IN MEXICO AND CENTRAL AND SOUTH AMERICA. 9 On February 9 Lieutenant-Commander Davis and Lieutenant Laird left Arica, and arrived in Paita on the 17th. Lieutenants Norris and Fletcher left Paita on the same day and by the same steamer, for Panama. The observatory was erected in Panama in the grounds of ‘the telegraph oftice. It being now the end of the month of February, and the rainy season on the Isthmus and in Central America being close at hand, it was deemed advisable to occupy three stations simultaneously, as it was highly desirable to fix one secondary meridian on the coast of Central America. Moreover, an agreement had been made, before leaving the United States, with Miles Rock, esq., chief of the Guatemala Boundary Commission, to exchange signals with him at Guatemala from the point occupied on the Central American coast, thus establishing the longitude of the city of Guatemala, and furnishing Mr. Rock with an initial point for the longitudes of his sur- vey. La Libertad, in Salvador, was chosen as the most suitable point for this purpose, and Lieutenant Laird was ordered to proceed there, taking with him one of the spare transit instruments and the necessary electrical instruments, and to exchange signals from that place with Lieutenant Norris at Panama and with Mr. Rock at Guatemala. Lieutenant Fletcher was ordered to join Lieutenant Laird at Panama and to accom- pany him to La Libertad as his assistant. In obedience to these orders Lieutenant Laird left Paita on March 2, passed through Panama, where he was joined by Lieu- tenant Fletcher on March 12, and arriving at La Libertad on the 17th proceeded at once to erect a temporary observatory hut, and was ready to exchange signals with both Panama and Guatemala on the 21st. In this last stage of the work Lieutenants Laird and Fletcher occupied the station at La Libertad; Miles Rock, esq., that at Guatemala; while Lieutenant Norris had his observatory at Panama, and Lieutenant- Commander Davis was at Paita. The measurement between Paita and Panama was effected on the nights of March 3, 9, 13, and 14; that between Panama and La Libertad on March 22, 23, and 24, and that between La Libertad and Guatemala on March 25 and 27. Lieutenant Laird also observed for latitude at La Libertad. - These measurements completed the operations of the expedition in the field. The several parties met at Panama on April 5, and the instruments and observatories having been shipped through to New York from the several places last occupied as astronom- ical stations, the officers composing the expedition sailed the same day for New York by the steamer City of Para, and reported at Washington on April 16 the successful termination of the work. . In the prosecution of the work on the West Coast of South America many diffi- culties had to be encountered which caused serious and annoying delays. As has been already mentioned, the almost continual foggy and cloudy weather on the Peru- vian coast was an ever present cause of anxiety. The operations in Peru were at points occupied as military posts by an invading army, and the observers had to con- tend with the dilatoriness, and in the case of thé military commandant at Arica, the indifference and stupidity, of officials, and the delays in custom-houses. The cables _of the Western and Brazilian Company on the East Coast were broken down during a great part of the time, so that all the traffic from Brazil and the River Plate came 11959 D L——2 10 TELEGRAPHIC DETERMINATION OF LONGITUDES over the lines on the West Coast; besides which, the Chilian Government occasionally took the lines for military purposes. The cables were constantly occupied day and night with a press of regular paying work. Under these circumstances it was no slight concession on the part of the companies to interrupt traffic and grant the use of the lines for scientific purposes. Without sucha generous concession, and without the cordial and hearty co-operation of the local managers, the work would have been im-- possible. The acknowledgments and thanks of the expedition are due to J. R. France, esq., the general manager of the Central and South American Company, and to Messrs. West, Van Valkenburgh, Davies, England, and Clarkson, of the same company, and to Messrs. Parsonné, Bailey, and Tuffield, of the West Coast of America Company. To Mr. A. Romaine Munroe Wragge, the manager of the Central and South American Company at Paita, the expedition owes much which contributed to success. One of the most vexatious of the difficulties at such places as Arica and Paita was to find suitable quarters. Through the interest and courtesy of Mr. Wragge, the officers, on their arrival at Paita, found themselves comfortably provided for in this respect. During the stay of the parties at Paita rain fell in considerable quantities for the first time in seven years, and the soil of the place, ordinarily arid and dusty, was converted into a sickening and fetid mud, and the whole town was rendered almost uninhabit- able. Under such circumstances to have quarters in a perfectly dry and wholesome house was no slight contribution to the success of the work. The acknowledgments of the expedition for various acts of courtesy and assist- ance are also due to the Hon. Seth Ledyard Phelps, United States minister to Peru; to the Hon. Cornelius A. Logan, minister to Chili; to Thomas Adamson, esq., consul- general at Panama; to Bruno Tuschuck, esq., consul at Vera Cruz; to Emilio Clark, esq., consul at Paita; and to David M. Dunn, eszq., consul at Valparaiso. DESCRIPTION OF THE STATIONS. GALVESTON. The observatory at Galveston was situated in the public square between Twen- tieth and Twenty-first streets and Winnie street and Avenue H. ‘This square was the site of the observatory of the U. 8. Coast and Geodetic Survey, in the telegraphic determination of the longitude of Galveston in 1868. The transit pier was built of brick and Portland cement, near the center gate on the east side of the square. Con- nection was made between the observatory and the telegraph office about a quarter of a mile distant by means of an insulated wire stretched on telephone poles in the streets. A copper earth plate was used at the observatory. From the north spire of the cathedral (the point fixed by the U.S. Coast and Geodetic Survey’s determination of the longitude of Galveston) the center of the pier bore E. 360.08 feet and 8. 331.41 feet (true). On the conclusion of the work at this place the pier was removed, in accordance with the desire of the city government, and traces of occupation have been obliterated. IN MEXICO AND CENTRAL AND SOUTH AMERICA. 11 VERA CRUZ. The observatory was placed inside of Fort Concepcion at the north end of the city of Vera Cruz. The pier was built of brick and mortar, it being found impossible to obtain Portland cement at a reasonable price. The mortar hardened very rapidly, however, and the pier showed great stability during the progress of the observations. The pier was built on the western side of the terre plein of the lower part or outwork of the fort. The center of the pier was 39 feet 8. and 20.5 feet E. (true) of the gun- pivot in the northwest salient of the work. From the center of the pier the vane of San Juan de Ulua light house bore N. 63° 45’ 20” E. (true) distant 3488.2 feet. Connection was made with the telegraph office, about 400 yards distant, by means of an iron wire stretched on insulators, from the parapet of the fort, over the roof of the railway station, and thence to the office. Another iron wire was passed from the observatory, over the parapet, and attached to a copper earth plate sunk in the soil at the bottom of the ditch. On the removal of the observatory the transit pier was left standing, but it is likely to be removed at any time, and cannot .be considered as a permanent mark. GUATEMALA CITY. The position occupied by Mr. Miles Rock, chief of the Guatemala Boundary Com- mission, in the measurement between Guatemala City and La Libertad, Salvador, is described by him as the second patio of the Instituto Nacional. LA LIBERTAD, SALVADOR. The observatory at La Libertad was built in rear of the custom-house store-rooms on vacant ground north of the main street. The center of the transit pier, which was built of adobe and Portland cement, capped with brick, was 50 feet due north of the northern line of the main street. At the northeast corner of the custom-house store- rooms an iron gun is sunk in the ground, muzzle down. From this point the center of the pier bore W. 13 feet, N. 83.75 feet (true). The observatory was connected with the telegraph office, about 100 yards dis- tant, by two insulated wires. From the center of the pier the inshore end of the iron wharf (Commander Philip’s observation spot) bore S. 21° 38’ W. (true), distant 392.7 feet. The pier was left standing at La Libertad, but cannot be regarded as a perma- nent mark. PANAMA. The observatory at Panama was placed in the grounds of the office of the Cen- tral and South American Telegraph Company, on the east side of the building. The pier of brick and cement was an enlargement of one found already standing, used by a party of French naval officers the previous year.! Connection was made between the observatory and telegraph office about 20 feet distant by two insulated wires car- ried in over the door of the office. From the center of the transit pier the south tower 1A detachment of the French expedition to Chili, for the observation of the Transit of Venus, December , 1882, This party, under M. M. les Lieutenants de Vaisseau Fleuriais and de Bernardiéres, measured the difference of longi- tude, telegraphically, between Buenos Aires and Valparaiso, Valparaiso and Chorillos, and Chorillos and Panama. 12 TELEGRAPHIC DETERMINATION OF LONGITUDES of the cathedral (the point fixed by Commander Green in the telegraphic determination of the longitude of Panama in 1874~75) bore N. 56° 51’ 25” W. (true), distant 908 feet, The pier was left standing on the conclusion ofthe work at Panama, and is likely to remain as long as the same building is used by the Central and South American Telegraph Company. PAITA. The observatory at Paita was placed in the yard of the Central and South Ameri- can Company’s office, between that building and the sea. Connection was had with the office about 30 feet distant by a double insulated wire carried through a window. The pier was built of brick and the coarse gypsum cement made at the place, and stood on made ground, so that it was necessary to dig to a depth of about six feet, and fill in with broken shale, pounded down hard, to get a firm foundation. From the center of the pier the west tower of the cathedral bore 8. 44° 32’ E. (true), distant 835-8 feet. The point given by English surveyors, viz, the northwest point of Paita village, is too indefinitely described to be identified. The tower of the cathedral is therefore taken as the future point of reference. On the conclusion of the work at Paita the pier was left standing, and is likely to remain as a permanent mark, and will be a convenient place for observations with an artificial horizon, as long as the ground remains the property of the telegraph company. ‘ LIMA. The observatory at Lima was erected on the flat roof of a building of great strength, the property of Mr. Du Bois, who kindly granted permission for its use. This building is situated on the Calle Union, and was built as a bank and dwelling by the late Henry Meiggs. Itwas chosen as a site for the observatory as being the only available spot within convenient distance of the offices of the West Coast: of America Telegraph Company, and the Central and South American Company, the latter office being in the building itself. It also afforded the advantage of seclusion and security to the observer in case of political disturbance in the city, which was at fhe time regarded as imminent. The pier, of brick and mortar, was built on the flat-roof im- mediately over a partition wall of solid masonry, two feet thick, running through the building, and intersected at a point near the situation of the pier by a similar wall at right angles. From the center of the pier the south tower of Lima cathedral bore N. 54° 18’ E. (true), distant 1312.6 feet. To refer to the lighthouse on San Lorenzo Island, a base line of about three fourths of a mile ‘in length was measured, nearly north and south, in the open country, just outside the western limit of the city of Lima. From both ends of the base the tower of the cathedral and the light house on San Lorenzo were both plainly visible, though the observatory could not be seen from either end of the base, nor was San Lorenzo light visible from the observatory. Angles were taken, from both ends of the base, on the cathedral tower and light house, and a bearing of the sun was also taken. From these was obtained the following: From the south tower of Lima cathedral, San Lorenzo light house bears 8. 85° 39’ 30” W. (true) distant 78,105 feet. In the work between Valparaiso and Lima connection was made with the West IN MEXICO AND CENTRAL AND SOUTH AMERICA. 13 Coast of America office, distant about one eighth of a mile, by stretching an insulated wire over the roofs of the intervening houses, and earth was made by attaching to a water pipe in the building. In the exchange of signals between Arica and Payta it was necessary to join the ends of the cables of the Central and South American Com- pany and the West Coast of America Company at Chorillos, where both cables land This was done by Mr. Davies, the manager of the Central and South American Com- pany at Lima, who sent an assistant to Chorillos to make the requisite connection on each night on which signals were exchanged. On the completion of the observations at Lima the pier was removed. CHORILLOS. In the direct measurement between Lima and Valparaiso it was found neces- sary to establish a transmitting station at Chorillos, the landing place of the cable, about 9 miles from Lima, as the increased resistance due to the land line connecting Chorillos with Lima made it impossible to work through between the offices of Lima and Valparaiso. The transmitting station at Chorillos was in the cable hut. As the position of Chorillos ‘was not determined in the transmission of signals, a further description of this station is unnecessary. ARICA. The site selected by Lieutenant Norris for his observatory in the measurement between Arica and Valparaiso was on the eastern slope of the Morro well above the town. This spot was chosen as affording a clear north and south view, as being com- paratively free from dust, and as being above the reach of a possible tidal wave. The ground was.loose sand on the surface, but by digging down a foot or so it was found to be firm enough for a foundation. A platform was first prepared of adobe and Port- land cement, about four feet square and one foot thick, and upon this the pier was built of the same material, thickly covered with cement. In digging, three mummies were discovered at a depth of about half a foot under the sand. Connection with the telegraph office, nearly a quarter of a mile distant, was made by a double insulated wire stretched on poles to the nearest house, and thence along the eaves of the inter- vening houses. From the center of the pier the spire of the iron church in the plaza (Iglesia Matriz) bore N. 24° 37’ E. (true), distant 577.8 feet.. On the conclusion of the measurement between Valparaiso and Arica the pier was left standing, and in its remote situation on the hillside it is not likely to be disturbed. In the measurement between Arica and Paita another pier was built, in a more convenient situation, on vacant ground on the Calle del Telegrafo, immediately in rear of the office of the telegraph company, and between it and the street. On the oppo- site side of the street was the custom house. The pier was built of fire brick (the only brick to be obtained) and Portland cement. It was removed on the conclusion of the work. Connection was made between the observatory and telegraph office close at hand, by a double insulated wire stretched over the intervening wall. From the centre of the pier the spire of the iron church in the plaza (Iglesia Matriz) bore S. 21° 16’ W. (true), distant 387.34 feet. 14 TELEGRAPHIC DETERMINATION OF LONGITUDES The mole referred to by English surveyors in giving the position of Arica was destroyed, probably in the tidal wave of 1868, and has never been rebuilt in the same place. Its site is now altogether uncertain. The Iglesia Matriz referred to in this work is a church built entirely of iron, and is likely to remain a permanent mark for many years. VALPARAISO. The site chosen for the observatory at Valparaiso was the first terrace of the Cerro Alegre, commanding an extensive view of the bay and the town below. This terrace is officially known as the Calle de Norte America, and familiarly, by the resi- dents of the neighborhood, as the Paseo of the Cerro Alegre. It is approached from the lower town by ascending the Calle Almendro from the Calle Arturo Prat for half a block, and then turning abruptly to the right up a steep winding flight of steps, 102 in number, which reaches the terrace; the general direction of the terrace is about WNW and ESE. It is a broad graveled walk, inaccessible to carriages, and pro- tected on the north side and ends by a wooden paling, beneath which the descent of the hill is precipitous. The terrace contains six one story cottages, with narrow gar- dens and palings. Toward the eastern end of the terrace the Calle Monte Alegre enters it at right angles. The transit pier was built of brick and Portland cement, as near the eastern end of the terrace as possible, that is, allowing just enough space between the pier and the fence for erecting the observatory. The observatory was almost opposite the gate of the easternmost cottage, a little to the east. There was no convenient permanent mark in the immediate vicinity to which to refer the pier by actual measurement, but the following bearings and distances will fix its site. From the center of the pier the site of old Fort San Antonio, the spot to which many longitudes on the west coast of South America have been referred, bore N. 11° 17’ W. (true), distant 763 meters (2503.3 feet). Fort San Antonio has been removed, and the spot referred to is now covered by the buildings of the custom house. This bearing and distance was obtained from a large scale chart of the city ja the Department of Public Works, on which the spot was accurately laid down. From the center of the pier the flag-staff on the cupola of the Exchange building, at the landing place, bore N. 1° 29’ 45” E. (true), distant 909.4 feet. This bearing and distance was obtained by triangulation. Through the kindness of Mr. G. F. Hanson, manager of the Edison Telephone Company, the wires of that company were used in connecting the observatory with the office of the West Coast of America Cable Company, in the Calle Blanco, for the work with Arica and Lima, and with the office of the Transandine Telegraph Com- pany in the Calle Arturo Prat, for the exchange of signals with Cordoba. Earth was found at a gas pipe close to the observatory. At thar conclusion of the work at Val- paraiso the pier was removed. CORDOBA. In the measurement between Valparaiso and Cordoba, Dr. B. A. Gould, director of the National Argentine Observatory at Cordoba, observed in the meridian of that institution. IN MEXICO AND CENTRAL AND SOUTH AMERICA. 15 DESCRIPTION OF THE INSTRUMENTS. MERIDIAN INSTRUMENTS. For the determination of time and latitude a combination of the transit instrument and zenith telescope was designed in 1873 by Mr. J. A. Rodgers with especial reference to work of this kind; and under his supervision two of these instruments, precisely alike, were made by Mr. Edward Kahler, for the U. S Hydrographic Office. These instruments were used in the work of determining telegraphic differences of longitude in the West Indies in 1874-75, onthe East Coast of South America in 1878—’79, and in India, China, and Japan in 1881-82. For a detailed description of them, with an illustration, the reader is referred to the report of the work on the East Coast of South America. These instruments have always been designated as H. O. No. 1 and H. O. No. 2. One of them was used by Lieut. Commander Davis at Vera Cruz, and the other by Lieutenant Laird at La Libertad. At the other stations occupied by the expedition, two of the meridian instruments by Stackpole of New York, made for the Transit of Venus Commission in 1874, and lent by the Commission for this work, were used. They are similar in pattern to the Hydrographic Office instruments, that is, the eye-piece is at one end of the axis, so that the observer always retains the same position at work, but they possess the advantage of greater weight and stability, and once adjusted in the meridian the necessity of readjusting in azimuth at the commence- ment of each night’s observations is obviated. These instruments were Stackpole 1503 and 1504. The former was used by Lieutenant-Commander Davis at Valparaiso, Arica, and Paita, and the latter by Lieutenant Norris at Galveston, Arica, Lima, Paita, and Panama. Mr. Miles Rock used a similar instrument in his observations at Guatemala; and another of the same pattern, No 1502, mounted in a transit hut at the U.S. Naval Observatory at Washington, was used by Messrs. Davis, Norris, and Laird, after the return of the expedition to the United States, for the determination of relative personal equation. In the two instruments carried by the expedition diaphragms of glass with ruled lines were substituted for the spider lines of the reticle, but on mounting the instrument at Valparaiso it was found that the glass diaphragm of No. 1503 had been broken in transportation, and as there were no spare ones, the spider lines were replaced. CHRONOMETERS. The time-pieces used by the expedition were four break circuit sidereal chronom- eters by Messrs T. S. and J. D. Negus, of New York. These instruments, Nos. 1684, 1519, 1254, and 1295, have done all the longitude work in the West Indies, on the East Coast of South America, and in China, India, and Japan, besides being used on this expedition, and have been in continuous use, with but slight intermissions for cleaning and examination, since 1874. They have given the greatest satisfaction, and their rates have been generally steady. 16 TELEGRAPHIC DETERMINATION OF LONGITUDES \. CHRONOGRAPHS. Two cylindrical chronographs of a modified form of the Hipp pattern were lent by the Transit of Venus Commission for use on the expedition. These instruments are excellent for field work, as they are strongly made, do not need to be accurately levelled, and will stand any reasonable amount of rough usage. They can also be used as relays in exchanging automatic signals. Boxes of lead weights, about 200 pounds to each instrument, were furnished with the chronographs, but they were found so exceedingly inconvenient to transport that they were discarded. It was found that a weight of from 120 to 150 pounds was sufficient to drive the chronographs. An iron box, with a stout bail across the top, and of about the capacity of a cubic foot, was made for each chronograph. This box being filled with moist sand, well packed, gave the necessary weight. In dismounting the instrument, the sand was thrown out, and the box refilled at the next station. By laying a few bricks on top of the sand in the box a comparatively even rate could be maintained in the revolution of the barrel of the chronograph, either adding to or diminishing the number of bricks as occasion required, and by this means the principal objection to these instruments, viz, extreme variability of rate and difficulty of adjustment, was nearly obviated. INK WRITERS. Each party carried a Siemens polarized ink writer. These two instruments were originally purchased by the Bureau of Navigation from Messrs. Siemens, of London, for use on the Brazilian land lines. They have served a variety of useful purposes. One of them was used by Lieut. Commander Davis as a polarized relay in the auto- matic exchange of time signals between Valparaiso and Cordoba. The other was used by Lieutenant Laird at La Libertad, as a chronograph; and they also served in con- nection with the chronographs in determining the absolute personal equation of the observers in noting mirror signals. MIRROR GALVANOMETERS. Each party was provided with a Thompson mirror galvanometer for use on the cables. But as the cable signals were invariably exchanged between the telegraph offices of each station, the instruments of the company were always used in preference, BATTERIES. Each party carried 24 gravity cells, made of vulcanite, and packed in boxes con- taining 12 each, with the necessary supply of coppers, zincs, and copper sulphate. MISCELLANEOUS ARTICLES. Besides the instruments above enumerated each party carried a double current cable key of peculiar construction, which will be described with the method of ex- changing signals; a plug switch-board; several relays of different resistances; a de- tector galvanometer; a break-circuit chronograph key; a sufficient supply of insulated IN MEXICO AND CENTRAL AND SOUTH AMERICA. 17 wire, screw posts, and binders; a theodolite; a surveyor’s chain; and a supply box containing tools, lanterns, oil can, &c. The expedition also jarred one sextant and artificial horizon and one double image micrometer telemeter. PORTABLE OBSERVATORIES. Portable wooden observatories were designed in 1873 by Mr. J. A. Rodgers for the use of the first expedition to the West Indies, and have been used, with but slight repairs, on all the succeeding expeditions, and having been mounted at fifty-one dif- ferent stations are still in a serpiedole condition. They were made to put together in sections, each side and the top being composed of two sections, with a door between. The sides were put together with cross pieces secured with bolts and nuts, and being raised into place the corners were bound together by iron knees and bolts, and the top and doors then shipped. They could be put up by two men in an hour. Canvas hood were fitted to haul over the tops and were stopped down at the corners when the observatories were closed. The huts were eight feet square, nine feet high on the south side, and seven feet high on the north side. They were exceedingly strong, and light and portable when packed. TRANSIT PIERS. A pier of brick and cement was built at each station as a foundation for the transit instrument. It was found convenient for each party to carry a slab cof marble of a suitable size as a capstone for the pier. . INSTRUMENTAL CONSTANTS. The values of the various instrumental constants of the Hydrographic office instru- ments were determined as follows: The values of the divisions of the striding levels and zenith telescope levels were found by repeated observations with the level trier at the U. S. Naval Observatory, This instrument is the private property of Prof. William Harkness, U. 8. N., and was kindly lent by him. The pivots were tested by repeated measurements made with a spherometer, also kindly lent by Professor Harkness, and were found to be perfectly cylindrical and equal in size. In instruments of this pattern a correction for the effects of flexure of the axis must be introduced. To determine its exact amount, observations were made in the following manner: A large number of stars was observed on the meridian at various distances north and south of the zenith, in both positions of the instrument, and from each star a clock correction was deduced corrected for the level, collimation, and azimuth errors of the instrument. The difference between each clock correction thus obtained and the true correction obtained by comparing with the standard clock of the Naval Observatory, at which place the observations were made, was assumed, after reducing to the equator by dividing by the secant of the star’s declination, to be 11959 D L——3 18 TELEGRAPHIC DETERMINATION OF LONGITUDES due to the flexure of the axis at the zenith distance of that star, expressed in seconds of time. On obtaining the ratio of the flexure corrections at the various zenith dis- tances, by dividing each one by the value at the zenith, they were found to follow the value of the cosine of the zenith distance, having a maximum value when the tele- scope was pointed to the zenith and a zero value when it was horizontal. The values of the revolutions of the micrometer screws were determined by numerous observations of circumpolar stars at elongation. The various instrumental constants of the Transit of Venus instruments were fur- nished by Prof. William Harkness, the secretary of the Transit of Venus Commission. The equatorial thread intervals of all the instruments used on the expedition were determined by repeated observations of the transits of circumpolar stars. The transit lines on the ruled glass diaphragms, used in all the instruments except No. 1503, were arranged in groups as follows: One, three, seven, three, one. The middle group of seven was the only one used in observing transits for time. The spider lines of No. 1503 were arranged as follows: one, one, one, five, one, one, one. The middle tally of five, and the nearest single thread on each side of it, a total of seven threads, were used in time observations. Their intervals are irr egular, owing to the difficulties under which the lines were fitted. The values of the instrumental constants are then as follows: STRIDING LEVELS. HO, NG. 4 seed een siewaeseeey seeeeegentesseesses I division = 0.94 = 0°.063 Bb, Oi, NG. Bocce. i ay a ess aN gen Rae a ti 1 division = 0'.94 = 0°.063 Trae Ot V CNS, A502 nopeseeocapesodeseccset cued i division = 1.22 = 6.68% Transit of Venus, 1904.0 on..sedcasewaeeses eeeseees 1 division = 1.10 = 0°.073 Transit of Venus, 1497 (used by Mr. Rock at Guatemala) 1 division = 1.42 = 0°.095 Transit of Venus, 1902.0 ox.ssvauceavccessenceweeeee 1 division = 1.16 = 0°.077 B Oy NOP sec cece ossdeeus eens eeeeeee sides eeeeeee Sens 1 division = 1’.000 TH, ONG. 2. .capcaseue ede nee ace dees Re weonsens 1 division = 1’’.006 Tiansip Ge VOUS, AGOF euusccedcucssdencne canoshtdeeea we I division = 1’.270 Transitof Venus, $504..22 4 ; . i te * I premnnen aen 29 Bo "5 32 33 a4 aS 36 “¥ Pg > Wi : po ee Am. am. saat 37 a3 39 4o * 4] 42 43 Pet) i (eee : ay us i 46 ag 48 i a oF Send pte geicint petemnte Leis, Cheng. i HM put 1/883, IN MEXICO AND CENTRAL AND SOUTH AMERICA. . 25 would not affect the cable at all. This was found impracticable at Vera Cruz on account of the distance, so a single wire was used, and an earth connection at the observatory and office. Now when the local current from the battery in the observa- tory reaches the bar or lever Z of the cable key it divides, because the bar Z is con- nected with the negative pole of the cable battery. By far the greater part of it finds earth at the bar Z and completes the local circuit. A small part, however, passes through the cable battery, provided it there finds a pole of the opposite name (as hap- pened to be the case in this instance), and reaches the bar C. Here it again divides, The larger part goes to earth again at the lever E; but still enough remains to flow into the cable through the lever L, and to slightly deflect the very delicately sus- pended coil of the recorder. ‘The amount of this deflection can be either increased or dimi..ished by increasing the resistance at the points of contact between the lever E or the lever L and the bar C. If a bit of moist paper be put between the lever E and the bar C at their contact point, the deflection of the siphon caused by the local bat- tery will be increased; and if similar resistance is made at the point of contact between the lever L and the bar C, the deflection will be greatly diminished or can be made to disappear altogether. The deflection of the siphon can thus be regulated by very slight resistances, which were found in practice not to affect the cable signals, and this system affords an elegant method of using the recorder as a chronograph in registering the actual beats of the chronometer. Nor does the connection of the local battery with the cable battery at all affect the cable circuit; for when the right-hand key is pressed (the only one used in exchanging signals) the local circuit is broken; and while using the key for speaking the local circuit should always be broken. Advan- tage was immediately taken of this method at Vera Cruz, and in the exchange of signals with Galveston the fillet of the recorder in the Vera Cruz office was a chrono- graph fillet showing the second beats of the break-circuit chronometer, and the signals sent and received were read off directly from it. The signals sent were also recorded on the chronograph in the observatory, thus identifying the second marks on the fillet. Fig. 3, Plate I, is a fac simile of portions of one of these fillets. The beats of the chronometer may be distinguished by their regular distances from each other; the signals received from Galveston appear at a, a, a, &c., and those sent to Galveston, causing a sharp “kick” of the siphon, appear at b, b, b, &c. In reading off, the dis- tance between the commencement of a second beat and the commencement of the signal was measured with the diagonal glass scale. The measurement between Galveston and Vera Cruz afforded the only opportu- nity during the work of this expedition of testing this method; but it is believed that it could always be made to work on any lines on which any form of Sir William Thompson’s siphon recorder is used. At all events, with the improved form of key, the system of exchange by alternate arbitrary signals would always work in connec- tion with the recorder. The success at Vera Cruz in registering the beats of the local chronometer on the fillet of the recorder suggested another experiment. This was to place a relay in the local circuit in the telegraph office, which should take the place of the cable key and send the beats of the chronometer to the other station. A description of the connec. 11959 D 1—--4 26 TELEGRAPHIC DETERMINATION OF LONGITUDES tions at Vera Cruz was teleg:aphed to Lieutenant Norris at Galveston, who made the same connections at his end of the line, and succeeded in the same manner in getting the beats of his chronometer on the recorder fillet. The cable circuit at Vera Cruz was now led through the points of a relay, whose coil was included in the local circuit. By this means the beats of the Vera Cruz chronometer were received at Gal- veston, and for the first time, as it is believed, in the history of telegraphic longitudes, the comparison of the actual beats of the two chronometers was made automatically through a submarine cable. The comparison of chronometers tlius effected was, how- ever, in error; for the breaking of the local circuit by the action of the chronometer closed the cable circuit, sending the current to line, and the chronometer beats thus transmitted to the other station were slow of actual chronometer time by the time occupied by the armature of the relay in passing between the points.” This difficulty might have been overcome had there been time for further experiments; but in fact the system of arbitrary signals affords a very accurate means of comparing the chronome- ters, and would generally be found preferable on account of its greater simplicity; and it might be more exact, if the chronometers at the two stations were beating in unison. On the arrival of the parties at Arica and Valparaiso, it was found that recording instruments were not used at all on the line of the West Coast of America Company, the mirror being used at all stations. It was necessary, therefore, to abandon auto- matic signals; and in all the work on the West Coast of South America mirror signals were used in comparing the chronometers. Between Paita and Panama, and between Panama and La Libertad, the recorders were again found in the cable offices. But the distances between these points were too great, when the line was connected through at the intervening stations, to allow of their use without increasing the battery, which it was not advisable to do, and the system of mirror signals was therefore adhered to. In comparing chronometers by means of mirror signals a change was made in the original method, by which the personal error of the observer in sending signals coin- cident with the beats of the chronometer was avoided. At all stations on the West Coast, as at Galveston and Vera Cruz, the observatory circuit was led through the telegraph office, and the improved key was still used In sending signals the times of their occurrence were automatically recorded on the chronograph in the observatory, and in receiving signals the deflection of the ray of light from the galvanometer was noted by pressing the lever Z and breaking the local circuit. Seventy-five arbitrary signals, in five groups of fifteen signals each, were first sent by the senior observer, and noted by the observer at the other station, who then sent a similar set in return. On the following day the signals sent were read off from the chronograph sheet at each station and their times telegraphed to the other station in the form of a service message. The actual time required for a comparison of chronometers was’ therefore very short, not occupying usually more than ten minutes. During the exchange of signals, if the distance between the office and the observatory was considerable, an assistant remained in the observatory, while the observer was in the telegraph office. Communication between the two could be held by means of the local circuit, the break circuit key and the relays being used in the observatory, and the lever Z of the cable key and a detector galvanometer or relay in the circuit being used in the office. When everything was ready for the exchange of signals, the assistant, at a prearranged signal iin. i - . Plate I. Break- circuit Key. Siemens Ink writer. Chronometer Circurt. Chronograph. Switch Board. Chronometers. ...Line to Cordoba. Exp lanation ——————— Line te Cable Office. ee et CA ronay raed (Crrenitd: ee eee Gable Circuit, ° % -S x = © ~ 8 E & © = x ~~ ss ~ ee = A, Bande L-—ee ee eee ores ees O bserva tory | Cable Office. fe b-----------. Cs a a i a a sa we es ee Se ee | | | | bob | | | | | | | heeeee ere aed | | | | | | | | | PSRSH SS SSS Saas ees eee at I | 7 > | t egees e 8 \ i ---- L OO (= cette g ° 5 ne S Break-cireutt Key. Switch Board. yo Chro nograph. Relays. Explanation : IN MEXICO AND CENTRAL AND SOUTIL AMERIGA. 21 from the office, started the chronograph and put down the pen and signaled to the office when all was ready in the observatory. On the conclusion of the exchange the assistant, at another signal from the office, lifted the pen, noting the last even minute recorded, stopped the chronograph, and interrupted the local circuit; or, if anything had occurred at the observatory to interfere with the exchange, he indicated the fact by signal to the observer in the office and another exchange was made. Plate II is a complete plan of the connections in the observatory and telegraph office. It will be seen, by reference to this diagram, that the current from only one cell passed through the chronometers,' their action being transmitted to the chrono- graph and to the office by means of relays. By a proper arrangement of the plugs ot the switch-board either chronometer or both chronometers could be made to work: the circuits, and the loop to the office could be short-circuited in the observatory This plate also shows the connections used in the observatory at Valparaiso in the automatic exchange of time signals with Cordoba, the connections used in the exchange between La Libertad and Guatemala being essentially the same. The Siemens polarized ink writer was used to receive the signals and transmit them to the chronograph, and in sending signals the line circuit passed through the points of the chronograph relay, and was thus broken at each second beat of the chronometer. It will be readily seen, by reference to the plan, that a proper adjustment of the cut-outs at A, B, and C, would set the circuit for either sending or receiving signals. The plan in the plate shows the circuit set for receiving signals. OBSERVATIONS FOR LATITUDE. In preparing to observe for latitude, pairs of stars were selected, generally not more than 20° from the zenith and not differing in zenith distance more than twenty minutes of arc. It was found desirable that the stars of a pair should not be less than one nor more than fifteen minutes apart in right ascension. An observing list was prepared, showing the available pairs of stars in order of right ascension, the zenith dis- tance of each star north and south, and the approximate chronometer time of culmination. The telescope being in the meridian, the foot-screws were adjusted so that the bubble of the zenith-telescope level would play in both positions of the instrument, and being set at the mean zenith distance of the first pair of stars the bubble of the level was brought to the middle of the tube and the level clamped, and as soon as the first star of the pair arrived on the middle transit thread it was bisected by the middle micrometer thread, and the time by chronometer noted. The micrometer and level readings were then taken and recorded, and the instrument reversed. The second star of the pair was bisected on the middle transit thread with the same micrometer thread, the chronometer time of its culmination noted, and the micrometer and level read again. This constituted one observation for latitude. As many observations for latitude as time and circumstances would allow were made at each station. TRIANGULATION. The observations at the several stations determined the latitude and longitude of the transit pier at each station. As this was generally a temporary structure it was The strength of the other batteries depended on local circumstances. In the automatic exchange between Cordoba and Valparaiso 50 Le Clanché cells were used on the line. 98 TELEGRAPHIC DETERMINATION OF LONGITUDES necessary to refer to some well established landmark at the place. At most stations the point chosen was that fixed on the Hydrographic Office chart of the place, or that given in the list of geographical positions published by the Hydrographic Office. At some stations, however, it was necessary to select a new point of reference. In order to ascertain the bearing and distance of this point from the center of the pier the ordinary trigonometrical methods were used. The azimuth was determined either by a bearing of the sun or by reference to the true meridian line established by the transit instrument The base lines were measured with the surveyor’s chain, or with the double-image micrometer telemeter, and angles were taken with the theodo- lite. The foregoing description of the stations gives the bearing and distance of the center of the pier from the permanent marks chosen at each station. PERSONAL EQUATION. For several reasons it has not been deemed advisable to introduce a correction for personal equation into the following computations. To introduce arbitrarily into each link of a long chain of measurements, made under such varying conditions, a constant correction, determined from observations made either before or after the whole work, would be manifestly hazardous, as the personal equation of an observer is known to vary with the various influences which affect his physical condition. During the progress of the work in the field there was absolutely no means of determining the personal equation of the individual observers, and to exchange stations in each meas- urement, with the view of eliminating the errors due to personal equation was, in a work of such extent, obviously impossible. Besides, in the measurements made between Greenwich and Buenos Aires, by former expeditions, no correction for personal equa- tion was introduced. The sides of the great polygon, as far as they depend on the work of the several naval expeditions, are therefore in this respect homogeneous, and the difference of the two resulting longitudes of Cordoba Observatory represents the algebraic sum of the errors of all. It would be highly desirable, in work of this kind, for each party to be furnished with a reliable personal equation machine, and for each observer to determine, by its means, his personal equation, on each night on which he observed, to be introduced as a direct correction to the observations of that night. Advantage was taken of every opportunity which occurred for determining the personal equation of the observers. The personal equation machine’ at the Naval Observatory in Washington was used before and after the work. On the completion of the measurement between Galveston and Vera Cruz, a series of observations was made at Galveston, on the nights of April 30, May 1 and 2, 1883, to determine the relative personal equation of Messrs. Davis and Norris. Alternate stars were observed by the two observers, using the same transit instrument and chronometer. The inde- pendent clock corrections of each observer, reduced to the same epoch, gave the required relative personal equation.” After the return of the expedition to Washing- \ For a description of Eastman’s Personal Equation Apparatus, see Washington Observations for 1875, Appen- dix I, Washington, 1878. 2 Chauvenet’s Second Method. See Chauvenet’s Spherical and Practical Astronomy, Vol. II, p rg91. IN MEXICO AND CENTRAL AND SOUTH AMERICA. 29 ton on the completion of the whole work, another series of observations was made at the Naval Observatory, using the same method, to determine again the relative per- sonal equation of Messrs. Davis and Norris, and also of Messrs Norris and Laird. These observations took place on the nights of June 4, 15, 16, and 17, and June 20, 23, and 28, 1884. On each night on which the relative personal equation of the observers was determined by star wansits, their absolute personal equation was also determined by means of Eastman’s apparatus, in order that the results of the two methods might be directly compared. The results of all the determinations of the absolute and relative personal equations of the several observers are set forth in the following table. Column I shows the date and place at which the observations were made. Columns IJ, III, IV, and V contain the absolute personal equations of the sev- eral observers, determined by Eastman’s machine. Columns VI and VII show the relative personal equations of Messrs. Davis and Norris and Messrs. Norris and Laird, deduced from the observations of absolute personal equation, and Columns VIII and IX show the relative personal equations of the same observers determined by transits of stars. Mr. Rock, whose personal equation appears but once in the table, is a pro- fessional astronomer and trained observer. Messrs. Davis and Norris are skilled observers, having had each an experience of about ten years of constant practice with the transit instrument. Mr. Laird is an inexperienced observer, having had no prac- tice previous to the present expedition: s Absolute and relative personal equation expressed as a correction to observed time of transit. i; | IL mr | Iv. | ¥, vi. | vit. | vit* | 1xX.* Absolute personal equation by East- | Sosation by Iast- | equation by transit : man’s machine. of stars. Date and place of observation. Davis. | Norris. | Laird, | Rock. N-D. | L-N. N-D. L-N. Ss. Ss. Ss. Ss. Se Ss. a Se Washington, 1883, February . . .| —.174 | —.072 |. . «|. . + . | 4.102 oy Galveston, 1883, April 30... . . + 255 Galveston, 1883, April3o. . . .. wise cone a a a s hem. 5. hem. 5. 5. Nov. 5| a _ Piscis Australis -| E.| 7 | 22 2 38.429 |+0. 364 |-+-o. 212 |— 0,084 |— 0.073 | 0.000 | 38.848 | 22 51 14.730 |+0 48 35. 882 |4+ 0.051 n OctantisS.P.. 7 | 22 11 40.893 |—1. 360 |—o. 648 |—12. 508 |+ 0.599 | 0.000 | 26.976 | 11 0 3.711 [36. 735] @ Aquarii .... 7 | 22 19 43. 866 |+-0. 284 |+-0. 119 |— 0. 660 |— 0.063 | 0.000 43.546 | 23 8 19.540 35-994 |— 0.061 y Piscium.... 7 | 22 22 34.486 |+0. 256 |0. 103 |— 0. 862 |— 0.063} 0.000 | 33.920 | 23 11 9. 815 35. 895 |-+ 0.038 tT Pegasi..... 7 | 22 26 19.917 |+0. 191 |0.074 |— 1.333 \— 0.068 | 0.000 | 18.781 | 23 14 54.770 35.988 |— 0.055 6 Sculptoris ...; . 7 | 22 54 17.443 |+0. 358 |10.139 |— 0.125 |— 0.072 | 0.000 | 17.743 | 23 42 53. 660 35-917 |-+ 0.016 B Chamaeleon.S.P.| E. | 7 | 23 23 3.871 |—0. 592 (0. 459 |— 6.977 |+ 0.320 | 0.000 | 56.163 | 12 11 31.674 |+0 48[35. 511] B Mydtic x «2 < 7 | 23 30 58.379 |—1. 066 |+1. 513 |+ 5.073 + 0.129 | 0.000 | 4.028} 0 19 40.300 |+0 48[36.272]) . . | Piazzi 0,130 . 7 | 23.42 48. 194 |—0. 346 |-Lo. 518 |— 0. 227 |4 0.030 | 0.000 | 48.169 | 0 31 23.985 35. 816 |-+ 0.117 , Ng Ceti. ee) i 7 | 23 49 II. 191 |—o. 322 |10. 492 |— 0.405 |+ 0.028 | 0.000 | 10.984 | 0 37 46.943 35-959 |— 0.026 ¢ Andromede . 7 | 23 52 38.070 |—o: 189 |-L0. 292 |— 1.405 |+ 0.029 | 0.000 | 36.797 | © 41 12.844 36..047 |— 0. 114 6 Piscium.... 7 | 23 54 5.923 |—0. 243 |--o. 378 |— 0.997 |+ 0.027] 0.000] 5.088 | o 42 40.997 35.909 |-+ 0.024 6 MusceS.P..} . 7} © 5 45.464 |4-0. 232 |\—0. 372 |— 4.575 | 0.083 | 0.000 | 40.666 | 12 54 16.553 [35.887]| . e Piscium. .../W.| 7] oO 8 21.486 |—o., 242 +o. 391 |— 1.005 |+ 0.027 | 0.000 | 20.657 | 0 56 56.579 |+0 48 35.922 |+ O.OI1 NORMAL EQUATIONS. Assuming @/ Se 298 + da’ circle EE. ( o=-+ 0, 681 + 4. 649 da’ — 1.440dc¢+ 2.621 d¢ ) whence da’ = a//—— 1.671 + da’ « W. — 0. 560 + 4.433 da’ + 0.375dc+ 2.914 d¢ da// = + 0. 130 ¢ =+0.046+4 dc fe RS + 1.428 — 1. 440 da’ + 0. 375 Na’ 4+ 19. 115 de — 0. 285 dé dc =—0.091 AT =-+ ob 48™ 358.926 + dz. — 0.005 + z. 621 da’ + 2.914 da’’ — 0. 285 dc + 10. 375 dt 6¢ =-+10.006 a’ = — 18.476 (circle east); a// = — 1*.541 (circle west); c= 0%.045 (— with circle E.). Chronometer No. 1254, at 235 9™.2 chron. time, oF 48™ 358.933 + 08.014 slow; losing 0.002 per hour. Nov. 6| y Pegasi.....|E.| 7 | 23 18 41.847 |+0. 220 |+0.056 |— 1.031 |— 0.076 |+0.009 | 41.025 | 0 7 16.894 |+0 48 35.869 |— 0.132 .| @ Chamaeleon. §S. P. 7 | 23 23 2.836 |—0. 593 |—0.152 |— 6. 386 |+ 0.193 |+0.008 | 55.906 | 12 11 31.763 [35-857]} t “Cet. os ws 7 | 23 24 56.426 |+0. 293 | 10.075 |— 0.547 |— 0.075 |+0.008 | 56.180 | 0 13 31.813 35. 633 |4 0. 104 B Hydri 7 | 23 30 §9.036 |+1. 066 |-++0. 274 |+ 4.447 |— 0.353 |+0.005 | 4.475 | © 19 40. 239 [35-764]} . £2: Cet eo ce aes 7 | 23 35 32.800 |+0. 278 |+0.071 |— 0.646 |— 0.074 |+0.005 | 32.434 | 0 24 8.091 35.657 |+ 0.080 13 Ceti... a ak: : 7 | 23 40 42.162 |+0.277 |+0.071 |— 0,652 |— 0.074 |+0. 003 | 41.787 | © 29 17.539 35.752 |— 0.015 Piazzio, 130. .| E.| 7 | 23 42 48.034 |-Lo. 345 |+0. 089 |— 0. 199 |— 0. 082 |-L0. 003 48. 190 | 0 31 23.979 |+0 48 35.789 |-- 0.052 6 Piscium... . 7 | 23 54 5.950 |—0. 243 |+0. 188 |— 0.659 |+ 0.038 | 0.000] 5.274 | © 42 40.994 |+0 48 35.720 |+ 0.017 e Piscium.... 7 | © 8 21.619 |—o. 242 |+0. 188 |— 0. 664 |+ 0.038 |—0. 003 | 20.936 | © 56 56.577 35- 641 | 0.096 y Ceti... ... 7 | © 14 10.911 |—o. 297 |-Lo. 230 |— 0. 392 |4+ 0.039 |—0.005 | 10.486 | 1 2 46.312 35. 826 |— 0. 089 « Tucanze 7 | © 23 13.679 |—0. 723 |+0.560 + 1.728 |4 0.108 —o.007 | 15.345 | I II 51.999 [35-654]} . 6! Ceti 7 | © 29 39. 353 |—O. 291 |+0. 225 |— 0.424 |-+ 0.038 [0.009 | 38.892 | 1 18 14.626 35- 734 |-+ 0.003 n FPiscium....| . 7 | © 36 43.036 |—o. 219 |+0.170 |— 0. 781 |-+ 0.039 |—0. oro | 42.235 | 1 25 17.981 35. 746 |— 0. 009 a Eridani... W.| 7 | © 44 48.314 |—o. 537 |+0.416 |+ 0. 802 |+ 0.071 |—0. 013 | 49.053 | I 33 24.798 |+0 48[35. 745] NORMAL EQUATIONS. S. Assuming. a@/ aapeig 244+ da’ circle E. ( o=-+ 0, 355 + 3. 825 da’ — 0.817 dc-+ 2.346 d¢ ) whence da’ —— 0. 107 a// == —1.092+ da” « W. — 0. 289 + 2.640 da//— 1.234 dc-+ 2. 164 d¢ da// = +. 0.073 ¢ =+oo21+de “ E. + 1.349 —o. 817 da’ — 1. 234 da’/ + 17. 586 de — 1. 303 dt dc =—0.077 AT =-+ ob 48™ 358.738 + dz. — 0. 008 -++ 2. 346 da’ + 2. 164 da’’/ — 1. 303 de + 10. 799 dt d¢ = 0.000 a/ = — 1.351 (circle east); 2/7 = —1°.019 (circle west); c= 08.056 (— with circle E.). Chronometer No. 1254, at 234 54™.6 chron. time, o8 48™ 35%.737 + 0%.017 slow; gaining 0*.013 per hour. 46. TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at the Cerro Alegre, Valparaiso, by Lieut. Commander C. H. Davis, with transit No. 1503, to determine the correction of sidereal chronometer Negus 1254. i : | 4g i § Flexure Aberra- | a Transit over | and in- f tion and Seconds Chronometer Date. Name of star. 8 < mean of threads. equality Level, | Azimuth.. colli- a a mee Ee correction. ee Taos of pivots. mation, pee A S O14 1883. Aims. S 38 5. $. 5. 2. hem s. hom. 5. Ss. Nov. 7 | y Pegasi.. ... E. | 7 | 23 18 42.587 |+0. 220 |0. 009 |— 1.081 |— 0. 169 |+-0.0r5 | 41.581 | 0 7 16.886 |+0 48 35.305 |+ 0.051 8 Chameleon. S. P. 7 | 23 23. 2.700 |—0. 593 | 0.000 |— 6.698 |+ 0.651 |+0.013 | 56.073 | 12 11 31.854 [35. 781] B Hydri.. . 7 | 23 30 59.900 |+1. 066 |-++0. 064 |+ 4.666 |— 0.783 |+0.011 | 4.924 | © I9 40.175 [35.251] ‘ 12 Gethig as aes 7 | 23 35 33-119 |+0. 278 |+-0. 026 |— 0.677 |— 0. 164 |+0. 010 | 32.592 | 0 24 8.086 35.494 |— 0. 138 1: Cet ec eek 7 | 23 40 42.781 |-+0. 277 |--0. 035 |— 0. 684. |— 0. 164 |-+0. 008 | 42.256 | 0 29 17.533 35.277 |-+ 0.079 BCRtne ay area 7 | 23 49 11.601 |-+0, 322 |+-0. 057 |— 0. 373 |— 0.173 |+0.006 | 11.440 | 0 37 46.929 35. 489 |— 0. 133 ¢ Andromede . .| E 7 | 23 52 38.881 |+v. 189 |+0. 037 |— 1.292 |— 0.179 |+0. 005 | 37.641 | 0 41 12.834 |+0 48 35.193 |+ 0. 163 yf Piscium.... 7 | © 23 15.264 |—o. 255 |-+0. 247 |— 0. 654 |+- 0.128 |—0. 004 | 14.726 | I 11 50.1414 |+0 48 35. 388 |— 0.032 7 Piscium. .. . 7 | © 36 43.311 |—0, 219 |0. 236 |— 0. 850 |+ 0.132 |—0.007 | 42.603 | 1 25 17.981 35. 378 |— 0.022 mn Pisclum. .. . 7 | © 42 23.673 |-v. 229 |-0. 255 |— 0.795 |-+ 0.131 —0. 009 | 23.026 | 1 30 58. 329 35. 303 |-+ 0.053 a Eridani.... 7 | © 44 48.474 |—0. 537 |0. 605 |+ 0.874 |-+ 0.240 0. 010 | 49.646 | 1 33 24.786 [35. 140] T Ceti. oe dng 7 | © 50 6.650 |—o. 315 |--o. 361 |— 0.329 |+ 0.134 |-o.011 | 6.490| 1-38 41. 886 35- 396 |— 0. 040 & Cethis oa: oy x Y 7 | © 57 10.174 |—0. 297 |-+o. 345 |— 0. 426 |+ 0.130 |—0.013 | 9.913 | I 45 45.252 35- 339 |+ 0.017 é Hydri..... W.| 7 | +41 31 6.150 |—o. 716 |-+0. 832 |+ 1.844 |+ 0. 360 |—0.023 | 8.447 | 2 19 43.751 [+0 48[35. 304] NORMAL EQUATIONS. Se bt v Assuming a@/ ==—1.212-+ da’ circle E. o=+0.795 + 4. 530 da’ — 0.138d¢-+ 2.969 d¢ )} whence da’ —— 0. 205 a//—=—1,.142+ da « W. — 0. 356 + 2.561 da/’— 1.142 d6c-+ 2.047 dt da// = + 0.032 ¢ =+ 0.027 + dc Soe [EE + 3. 127 — 0. 138 da’ — 1.142 da’? +. 17.715 dc — 1. 324 dt de =—0.173 AT = + 0b 48™ 358.296 + d¢ — 0. 091 + 2.969 da’ + 2.047 da// — 1.324 de + 10. 825 dt of =+ 0.037 a/ = — 18.417 (circle east); a@/” = — 18,110 (circle west); c= 0*.146 (— with circle E.). Chronometer No. 1254, at ob 10™.6 chron. time, ob 48™ 359.356 + 0%.020, slow; gaining 0%.016 per hour. Nov. 8} » Piscium E.| 7 | 23° 4 47.543 |+0.245 |+-0. 104 |— 0.747 |4+ 0.071 |+0. 001 | 47.217 | 23 53 22.231 |0 48 35.014 |+ 0.030 30 Piscium. .. . 7 | 23 7 26.360 |+0. 284 |-+0. 124 |— 0.524 |+ 0.071 |+0. 001 | 26. 316 | 23 56 1.403 35. 087 |— 0.043 2 Cette 2k sued 7 | 23. 9 13.186 |-Lo. 320 |-++0. 142 |— 0. 320 |-++ 0.075 .000 | 13.403 | 23 57 48. 508 35.105 |— 0. 061 33. Pisclum . . . . 7 | 23 10 49.797 |-+0. 283 |-+-0. 128 |— 0.530 |+ 0.071 . 000 | 49.749 | 23 59 24. 732 34.983 |+ 0.061 B Chameleon. S. P.| . 7 | 23 23 3.664 |—0. 593 |—0. 303 |— 5.540 |— 0.544 |—0. 002 | 56.682 | 12 11 31.948 [35.266] 8 Hydri..... E. | 7 | 23 30 59.193 |+1. 066 |+0. 619 |+ 3.858 |+ 0. 339 |—0. 003 | 5.072 | © 19 40. 109 |-+0 48[35. 037]. Piazzi,o.130. .| W.| 7 | 23 42 49.130 |—0. 345 |+0.445 |—.0.174 |— 0.118 |—0. 005 | 48.933 | © 31 23.966 |+o0 48 35.033 |+ 0.011 «x Tucane ....| W.| 7 | © 23 14.757 |—0. 723 |+1.159 |+ 2.011 |— 0. 305 |0. 011 | 16. 888 I 11 51.936 |+0 48[35. 048] NORMAL EQUATIONS. oe Ss. Assuming af =—0.951-+ da’ circle E. ( 0O—-+ 0.199 + 3.471 da’ — 1.309 de + 1.879 dt whence da’ —=—o. 221 a! =—1.358+ da” “ W. + 0. 085 + 0. 649 da’’ + 0. 893 dc — 0. 223 dt da// = + 0.172 c =+0. 265 + dc ce OE: + 1,062 — I. 309 da’ + 0, 893 da’’ + 10. 973 de + 2. 373 dt [ dc =—0.176 AT = + 08 48™ 345.864 + d¢ — 0, 095 + 1.879 da’ — 0. 223 da’? + 2.373 de + 5.377 dt J of =-+0. 180 a/ =— 1*,172 (circle east); a’” — — 18.186 (circle west); ¢ 08.089 (+ with circle E.). Chronometer No. 1254, at 234 11™.6 chron. time, ob 48™ 35%.044 -+ 0°.015, slow; gaining o*.o10 per hour. IN MEXICO AND CENTRAL AND SOUTH AMERICA. 4d Lranstts of stars observed at the Cerro Alegre, Valparaiso, by Lieut. Commander C. H. Davis, with transit No. 1503, to determine the correction of sidereal chronometer Negus 1254. 3 ; Flexure Aberra- Seconds Date. Name of star. ’ E Ree ase ie Level. | Azimuth. Te Rate. . corr. R. A. er B16 of pivots. mation. Faate 51a 1883. A. mt. ». S. 3 5. S. 5. S. hm. s. Ah. m. ». Nov.10} 6 Musce,S.P..} E.| 7 | 0 § 46.493 |—o. 232 |+o. 120 |— 3.925 |— 0. 382 |+0. 004 | 42.078 | 12 54 16.759 |+0 48[34.681]) : . e Piscium 7 | © 8 22.447 |+0, 242 |}—0.171 | 0. 862 |-++ 0.090 |-+0. 003 | 21.749 | 0 56 56.566 34. 817 |+ 0. Ior Cetera al es os 7 | © 14 11.837 |+0. 297 |—o. 268 |—- 0. 509 |-+ 0.091 |+0.003 | 11.451 I 2 46. 286 34. 835 |+ 0.083 « Tucane 7 | © 23 14.500 |+-0. 723 |—0. 735 |+ 2.242 |4 0.254 |10.002 | 16.986 | 1 11 51.872 [34. 886] OF Ceth ie we eee ea 7 | © 29 40.039 |+0. 291 |—o. 304 |— 0. 550 + 0.090 |+0. 008 | 39.567 | 1 18 14.614 35.047 |— 0.129 yn Piscium. .. 7 | © 36 44.021 |+0. 219 |—o. 226 |— 1.013 |-+ 0,092 | 0.000 | 43.093 | I 25 17.978 34. 885 |+ 0.033 mw Piscitum. ...| E 7/0 42 24.161 |-+0, 229 |—0. 225 |— 0.946 |+ 0.091 . 000 | 23.310 | 1 30 58.324 |+0 48 35.014 |— 0.096 a Eridani . ... 7 | © 44 50.007 |—0. 537 |—0. 278 |+ 0.965 |— 0.235 | 0.000 | 49.922] 1 33 24.748 |+0 48[34.826]} . . TCC Se eee Os 7} 050 7.876 |—o. 315 |—0. 100 |— 0. 363 |— 0.130 |- 0.001 | 6.967 | 1 38 41.877 34.910 |+ 0.008 e Sculptoris 7 | © 51 39. 800 |—o. 346 |—0. 099 |— 0.175 |— 0.139 |—0. 001 | 39.040 | 1 40 13. 838 34.798 |+ 0.120 CS Celi gach sh cera 7 | © 57 11.324 |—0. 297 |—0. 051 |— 0.471 |— 0.127 |—0. 002 | 10.376 | 1 45 45.249 34. 873 |4 0.045 y_ Arietis 7.| © 58 37.710 |—o. 206 |—o0. 031 |— 1.016 |— 0.132 |—0. 002 | 36.323 | 1 47 11.417 35.094 |— 0.176 B Arietis 4 7 | © 59 41.983 |—o. 201 |—0..026 |— 1.047 |— 0.133 |--0. 002 | 40.574 | 1 48 15.478 34.904 |+ 0.014 6 Hydri. . ... W.| 7] 1 31 7-471 |—0.716 | 0.000 |4 2..036 |— 0.352 |—0.005 | 8.434 | 2 19 43.713 |+0 48[35. 279] NORMAL EQUATIONS. Ss ae Ss Assuming _a/ =—1.558-+ da’ circle E. { o=—0.7364 4.174 6a’ + 0.184 6c — 3.138 d¢ } whence da’ = 4 0. 236 a// = —1.156+ da’? “« W. + 0. 403 + 2.550 da’ — 0,973 6c + 1. 802 d¢ da// = — 0.070 ¢ =—0.0314+ dc oR — 2.617 + 0. 184 da’ — 0.973 da/’ +. 17.640 de — 1.591 dt dc =+0.138 AT =-+ oF 48™ 348.967 + dt +0. 159 + 3. 138 da’ 4+ 1. 802 da’? — 1.591 de + 11.077 dt J d¢ =—0.050 a/ = — 15,322 (circle east); a’/” = — 1.226 (circle west); ¢== 08.107 (+ with circle E.). Chronometer No. 1254, at o8 40™.8 chron. time, 0” 48™ 348.918 + 0°.022, slow; gaining 0%.005 per hour. Nov.13| 8 Chameleon.S.P.| E.| 7 | 23 22 57.593 |—0. 593 |+0.049 |+ 0.681 |+ 0,112 |—0. 006 | 57. 836 | 12 11 32.429 |+0 48[34.593]/ . . BCC oa cee sey ee 7 | 23 24 57.463 |+0. 293 |—0. 038 |+ 0.058 |— 0.059 |—0. 006 | 57.711 | © 13 31.749 34.038 |+ 0.252 B Hydri 7 | 23 31 5.421 |+1. 066 |—o. 345 |— 0.474 |— 0.277 |—0.005 | 5.386] 0 19 39.755 [34- 369] 13 Cet 3 as hay 7 | 23 40 42.953 |+0. 277 |—0.170 |+ 0..070 |— 0.058 |—o. 003 | 43.069 | 0 29 17. 492 34. 423 |— 0.133 Piazzi, 0.130 7 | 23 42 49.451 |+0. 346 |—0. 225 te 0.021 |— 0.064 |—0. 003 | 49.523 | © 31 23.926 34. 403 |— 0. 113 ¢ Andromede ..| . 7 | 23 52 38.531 |+0. 189 |—o. 186 |+ 0.131 |— 0.063 |—0. 002 | 38.600 | 0 41 12.799 34-199 |+ 0.091 6 Pisctum....| E.| 7 | 23 54 6.556 |+0. 243 |—0. 251 |4+ 0.093 |— 0.058 |—0. 001 | 6.582 | 0 42 40.957 |+0 48 34.375 |— 0. 085 5 Musce,S.P..;W.| 7] © 5 42.871 |-+0.232 | 0.000 |— 0.092 |— 0.177 | 0.000 | 42.834 | 12 S16. 927 +0 48[34.093]} . . e Piscium.... 7 | 0 8 22.639 |—0. 242 |-—0.003 |— 0.020 |+ 0,022 |+0. 001 | 22.397 | 0 56 56.555 34.158 |+ 0. 132 Cell a a ee 7 | O 14 12,211 |—0. 297 |—0. 011 |— 0.012 |+ 0.022 |+0.002 | II.915 | I 2 46.263 34. 348 |— 0.058 « Tucane.... 7 | © 23 18.521 |—o. 723 |—0.057 |+ 0.053 | 0.063 |+0.003 | 17.860 | I II 51.774 [33-914]} .. v Pisclum.... 7 | © 24 33.003 |—0.178 |—0.015 |— 0.030 |++ 0.025 |-+-0. 003 | 32.808 | 1 13 7.041 34- 233 |+ 0.057 BF Ceti. a os see é 7 | © 29 40.621 |—0. 291 |—0..031 |— 0.013 |+ 0.022 |-+0, 004 | 40.312 | I 18 14. 605 34. 293 |— 0.003 y Piscium... W.| 7] © 36 43.779 |—0. 219 |—0.023 |— 0.024 |-+ 0.023 |+0.005 | 43.541 | I 25 17.973 |+0 48 34. 432 |— 0. 142 ve Assuming a/ =- 0, 222-+ da’ circle E. a//—=+0.015+ da’ “ ¢ AT =— 0.002 + dc Ww. = 40h 48 z4e255 or | a/ = + 0%.144 (circle east); a// o=+ 0.251 + 4. 256 da’ +o. II! NORMAL EQUATIONS. — 0.436dc+ 2.664 dt + 4.594 da’? — 0.534 dc+ 3. 388 d + 0. 632 — 0. 436 da’ — 0. 534 da’’ + 28.274 dc + 0. 031 dt +o.117 + 2. 664 da’ + 3. 388 da’” + 0.031 dc + 10. 570 dt J 0*.031 (circle west); ¢ = 0%.040 (— with circle E.). Chronometer No. 1254, at of 2™.9 chron. time, 08 48™ 348.290 + 0%,028, slow; losing o*.008 per hour. S whence da’ —— 0.078 da// = — 0. 046 dc =—Oo. 038 6¢ =+0.023 48 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at the Cerro Alegre, Valparaiso, by Lieut. Commander C. H. Davis, with transit No. 1503, to determine the correction of sidereal chronometer Negus 1254. 3 Flexure Aberra- Seeands Date. Name of star. j : oe eee eas Level. | Azimuth. vee es Rate. oe R. A. Chionousice uw. 2 5 of pivots. mation. : O14 1883. A. ms. i es fs s Sy S. kh. m. S hem 8. 5. Nov.14|« Tucane....| E.| 7] © 23 16.514 |+0.723 |—0. 489 |— 0.171 |-+ 0.534 |—0.004 | 17.107] 1 11 51.740 |-+0 48[34.633]] . . OF CC eee aes a) 7 | © 29 39.737 |--o. 291 |—0. 186 |4 0.042 |-+ 0.189 |—0.003 | 40.070 | 1 18 14.600 34. 530 I+ 0.006 my Piscium.... 7 | © 36 43.131 |+-0. 219 j}—0. 132 |+ 0.077 |+ 0.193 |—0. 002 | 43.486 | 1 25 17.970 34. 484 |4 0.052 Pisclum. . . . 7 | © 42 23.431 |+-0. 229 |—0. 130 |-+ 0.072 |4 0.191 |—0. O01 | 23.792 | 1 30 58.310 34. 518 |+- 0.018 « Eridani.... 7 © 44 49.907 |+0. 396 |—0. 297 \— 0.079 |+ 0.351 |—0.001 | 50.277 | 1 33 24.690 [34- 413] vy Piscium. .. . 7 | © 46 50.041 |+0. 249 |—0. 135 |+ 0.062 |-+ 0.188 |—o. 001 | 50.404 | 1 35 24.960 34-556 |— 0.020 T (Cetls «ew ae x E 7 | © 50 6.850 |+0. 315 |—o. 163 |-+ 0.030 |+ 0.195 | 0.000] 7.227) 1 38 41.875 +0 48 34.648 |— 0.112 GC -Ceths. id, ees W.| 7 | © 57 10.984 |--0. 297 |-+0. 086 |+ 0.095 |— 0.227 |+0.001 | 10.642] I 45 45.244 |+0 48 34.602 |— 0.066 y Arietis.. 2... 7 | © §8 37.057 |—0. 206 |-+-0. 065 |-+ 0. 206 |— 0. 235 |-+0. 001 | 36.888 | 1 47 11.416 34.528 |+ 0.008 B Arietis. . 7 | © 59 41.064 |—o. 201 |+0. 067 |+ 0, 212 |— 0. 238 |+0. 001 | 40.905 | 1 48 15.480 34.575 |— 0.039 v Ceti... . 7] I 5 59.347 |--0. 332 |+0. 129 |+ 0.053 |— 0. 240 |+0. 002 | 58.959 | I 54 33.514 34.555 |— 0.019 wu Fornacis. . . . 7 I 19 15.231 |—0. 368 |+0. 168 |+ 0.009 |— 0. 261 |+0. 004 | 14.783 | 2 7 49.144 34. 361 |+ 0.175 6 Hydri. eae Vas 7} I 31 10.286 |—o. 716 |-Lo. 352 — 0.412 |— 0. 628 +o.005 | 8.887] 2 19 43.650 [34- 763] uw Hydri. . 2. 1.) W.) 7] 1 45 42.257 |—1. 201 |+0. 622 |— 0.999 |— 1. 237 |+0.007 | 39.449 | 2 34 13.790 |1+0 48[34. 341] 2 NORMAL EQUATIONS. Assuming a@/ = fg, 190 + da’ circle E. 0 =-+ 0. 420 + 2. 630 da’ + 1. 192 6c-+ 2.109 d¢ ] whence da’ = an 089 a//—+0.111+ da’? “« W. — 0. 425 + 3. 266 da’’ + 0.031 dc-+ 1. 686 dt | da’ = + 0.137 ¢ =+0.343+6¢ “ E. + 2.597 + 1.192 da’ + 0.031 da/’ + 18.057 de + 0.156 dF dc =— 0.138 AT =-+ 0b 48™ 348.546 + dt. + 0. 089 + 2. 109 da’ + 1. 686 da’? + 0,156 de + 10. 948 d¢ d¢ =—0.010 a’ = -- 08.101 (circle east); a/” = + 0%.248 (circle west) ; ¢ = 0.205 (+ with circle E.). Chronometer No. 1254, at ob 52™.8 chron. time, o4 48™ 348.536 + 08.016, slow; losing 0.008 per hour, Nov. 16] 8 Hydri. . . ..| E.} 7 | 23 31 4.507 |+1.066 |+0. 206 |— 0.770 |4 0.220 |—v.005 | 5. 224 bg 19 39.506 |-+0 48[34. 282] B2 Cet “a 6 ss 7 | 23 35 33-009 j|+0. 278 |+0.048 |+ 0.112 |+ 0.046 |—o. 004 | 33.489 | 0 24 8.023 34. 534 [4 0.025 13. Cetlis. cae % 7 | 23 40 42.476 |+0. 277 |+0.044 |+ 0.113 j|+ 0.046 |—o0, 004 | 42.952 | 0 29 17.468 34.516 |-+ 0.043 Piazzi, 0.130 7 | 23 42 48.813 |+0. 346 |+0.053 |+ 0.034 |4+ 0.051 |—o0. 004 | 49.293 | 0 31 23.898 34.605 | 0.046 BEC cise ae aed 7 | 23 49 11.667 |+0. 322 |-+0. 043 |-+ 0.062 |+ 0.049 |-0.003 | 12.140 | 0 37 46. 867 34.727 |— ‘0. 168 ¢ Andromede . .| . 7 | 23 52 37.831 |+0. 189 |+0.025 |4 0. 213 |-+ 0.050 |—o. 003 | 38.305 | 0 41 12.779 34.474 |4+ 0.085 6 Musce,S.P..| E.| 7] © 5 42.429 |--0. 232 |—0. 030 |-++ 0.695 |— 0.251 [0.002 | 42.609 | 12 54 17.134 |+0 48[34. 525] « Tucane ... .| Wg} 7/| © 23 17. 764 |—0. 723 |-++0. 560 |— 0. 304 |— 0.234 | 0.000 | 17.063] I 11 51.670 |+0 48[34. 607] o Piscium.... 7 | © 50 42.906 |—o. 238 |-+0. 184 |-+ 0.120 |— 0.083 |0. 002 | 42. 891 I 39 17.439 34.548 |-+ 0.011 Sculptoris . . . 7 | © 51 39.627 |—o. 346 |+0. 268 |+ 0.026 |— 0.091 |+0. 002 | 39. 486 I 40 13.819 34. 333 |+ 0. 226 CCI es ee ee 7 | 0 57 10.790 |—0. 297 |-0. 230 |-+ 0.069 |— 0.083 |0. 003 | 10.712 I 45 45.231 34. 519 |-+ 0.040 y Arietis.. 2... 7 | © §8 36.701 |—o. 206 |+-0. 160 }+ 0.148 |— 0.087 )4-0. 003 | 36.719 | 1 47 11.427 34. 708 |— 0.149 @ Arietis.. 2. 7 | © 59 40.954 | —O. 201 |0.155 |-+ 0.153 |— 0.087 |+0.003 | 40.977 | 1 48 15.480 34. 503 |-+ 0.056 pw *Fornacis. .. . 7 | 1 19 14.640 |—o. 368 |-++0. 271 |+ 0.006 |— 0.096 |+0.005 | 14.458 | 2 7 49.139 34.681 |— 0. 122 6 Hydri..... W.| 7 | 1 31 9.757 |—0.716 |-+0. 509 |— 0. 297 |— 0. 231 |40.006 | 9.028} 2 19 43.610 |+0 48[34.582]| . . NORMAL EQUATIONS. Assuming af =-+ . 202 -+ da’ circle E. ( o—=—0o0.112+ 4.050 da’ — 0.721 dc+ 2.576 d¢ | whence da’ = + gees a//—=-+0.202+ da’ “« W. | ¢ +:9.097 + 3. 281 da/7— 0.953 dc+ 2.176 df 6a// = — 0, 023 ¢ =+0039+6¢ “ E. — 0. 483 — 0. 721 da’ — 0.953 da’’ + 19.750 dc — 2. 608 d¢ 6c =+0,025 AT = 04 48™ 348.557 + d¢. l + 0. 026 + 2.576 da’ + 2.176 da’? — 2, 608 dc + 11, 720 dt df == 0.000 a’ = +0%.234 (circle east); 2/7 = + 0%.179 (circle west); ¢= 08.064 (+ with circle E.). Chronometer No. 1254, at o4 25™,3 chron. time, o4 48™ 348.559 + 08,023, slow; losing 0,004 per hour. IN MEXICO AND CENTRAL AND SOUTH AMERICA. 49 Transits of stars observed at the Cerro Alegre, Valparaiso, by Lieut. Commander C. H. Davis, with transit No. 1503, to determine the correction of sidereal chronometer. Negus 1254. a 2 E T it fe a niger Seconds Dats. | Nameotstr “| | lamtents,| amity | Level. [Asma | iM | Rate | ofcor. | Ra. | Somtin | 2 3 of pivots. mation. Hans O|4 1883. Alm. 5. ry s. is s Ss. . him. S. hem. S. 3s Nov.17| @ Ceti... ... E 7 | © 29 39.471 |+0. 291 |—0.039 |-+ 0. 124 |-+ 0.009 |—-0. OI0 | 39. 846 | 1 18 14.587 |4+-0 48 34.741 |-+ 0.039 n Piscium... . 7 | 0 36 42.729 |+0. 219 |—0. 017 |+ 0.228 |+ 0.009 |—o. 009 | 43.159 | 1 25 17.960 34. 801 |— 0.021 a Eridani 7 | © 44 49.721 |+0.537 |—0.015 |— 0. 235 |-+ 0.011 |—0.007 | 50.012 | 1 33 24.642 [34. 630] ‘ v Piscium... . 7} © 46 49. 800 |+0. 249 |—0. 004 |+ 0.184 |+ 0,009 |—0. 007 | 50. 231 I 35 24.947 34.716 |-+ 0.064 T GOH ates ce ee as 7 | 0 50 6.670 |+0. 315 |—0. 001 [+ 0.088 |4+ 0.009 |-0.006 | 7.075 | 1 38 41.858 34. 783 |— 0.003 é Sculptoris . . . 7 | v 51 38.659 |+0. 346 | 0.000 J+ 0.043 |4 0.010 |—0. 006 | 39.052 | 1 40 13.814 34. 762 J+ 0.018 uw Fornacis....| . 7| 1 19 13.907 |+0. 368 |—0.025 |+ 0.011 | 0,011 | 0.000 | 14.272 | 2 7 49.134 34. 862 |— 0. 082 é Hydri.....| E.] 7 | 1 31 8.557 |+0.716 |—0. 093 |— 0.495 |4 0.025 |+0.002 | 8.712] 2 19 43.590 |+0 48[34. 878] zw Hydri 7 I 45 40.907 |—1. 201 |+1.056 |— 1.370 |— 0. 252 |+0.005 | 39.145 | 2 34 13. 697 |+o 48[34. 552] iy Gethio x. a arin 7 | 1 48 43.994 |—o. 256 |+o. 214 |-+ 0.199 |— 0.045 |+0.006 | 44.112 | 2 37 18. 802 34. 690 |-+ 0. 090 me Cetra ay ask oes 7 | 1 50 2.649 |—o. 308 |0. 250 J+ 0.113 |— 0.046 |4+0.006 | 2.664 | 2 38 37.404 34.740 |-+ 0,040 o Arietis 7 I 56 31.960 |—o. 219 |+0. 163 |4+ 0. 260 |— 0,046 |0.007 | 32.125 | 2 45 6. 871 34.746 |+ 0.034 ny Eridani 7 | 2 2 12.126 |—o. 292 |-+0. 208 J+ 0.138 |— 0,046 |+0.008 | 12.142 | 2 50 46.983 34. 841 |— 0. 061 12 Eridani . ...| . 7 | 2 18 35.214 |—o. 361 |+0. 269 |4+ 0.024 |— 0.052 |+-0. 012 | 35. 106 | 3 7 10.005 34. 899 |— 0. 119 « Hydri.. . . .|W.| 7 | 2 30 23.436 [1.059 |+0. 958 |— 1.135 |-- 0. 213 |-+0. 014 | 22.001 | 3 18 56.820 +0 48[34. 819] ° 5 NORMAL EQUATIONS. i Assuming a’ = 0.294-+ da’ circle E. { 0 = — 0.008 + 2. 129 da’ + 0.671dc-+ 1.5700¢ | whence da’ = + 0. 004 a//—+0.371-+ da’ “ W. + 0. 088 + 3.204 da/7 + 0.578 dce+ 1.614 dt ba// = — 0,031 ¢ = 0,000-+ dc ae Ky — 0. 502 + 0. 671 da’ + 0. 578 da/’ + 19. 436 de-++ 1. 806 dt dc ==-+ 0.027 AT =-+ 0b 48™ 349.778 + d¢ ++ 0, 029 ++ 1.570 da’ + 1.614 da’ + 1. 806 de -} 11. 816 dt df =—0,003 a/ = + 08.298 (circle east); a/” = + 08.340 (circle west); ¢ = 08.027 (+ with circle E.). Chronometer No. 1254, at 15 20,9 chron. time, ob 48m 348.780 + 08.013, slow; losing 08.015 per hour. Dec. 7|« Tucane....)E.| 7] © 23 11.171 40.723 |+0. 186 0. 333 + 0.525 |—o.014 | 12.258 | 1 11 50.825 |+0 48[38.567]) . . 6 Ceti... 2. 7 | © 29 35.241 |+0. 291 | +0. 050 |+ 0.089 |+ 0. 186 |—0. 013 35.844 | 1 18 14.456 38. 612 |+ 0. 068 y FPiscium... . 7] © 36 38.626 |+o0. 219 |+0.021 |4+ 0.165 |+ 0.190 |—0. O11 | 39.210 | I 25 17. 849 38. 639 |4+ 0.041 mw Piscium... . 7 | © 42 19.017 |-+0. 229 |+-0. 012 |+ 0.154 |-+ 0.188 |—0, 009 | 19.591) I 30 58. 216 38. 625 |+ 0.055 ‘a Eridani.... 7 | 0 44 44.736 |+0. 537 |+0.017 |— 0. 169 |+ 0.346 [0.008 | 45.459 | 1 33 24. 205 [38.746]} . - y Piscium.... 7 | © 46 45.667 |+0. 249 |+-0. 004 |+ 0.133 |4+ 0.185 |—0.008 | 46.230 | 1 35 24. 876 38. 646 |-+ 0.034 é Sculptoris .. . 7 | © 51 34.303 |+-0. 346 | 0.0c0 |4- 0.031 |4 0. 204 |—0. 006 | 34.878 | 1 40 13. 668 38. 790 |— 0. 110 ¢ Ceti... 2... 7| 057 5.760 |+0.297 | 0.000 |+ 0.083 |+ 0.187 |—0.005 | 6.322 | 1 45 45.152 38. 830 |— 0, 150 B Arietis E 7 | 0 59 36.079 |+0.196 | 0.000 |+4 0.184 |4 0.196 |—0. 004 | 36.651 | 1 48 15.411 |+0 48 38.760 |— 0.080 @ Celis swe ex WwW 7 I 5 55.049 |—0. 332 |-+0. 150 |-+ 0.081 |-— 0. 237 |0.002 | 54.709 | I 54 33-398 |+0 48 38.689 |— 0.009 a Arietis... 7| 112 1.156 |—o. 192 |-+0, 086 |-++ 0. 343 |— 0. 239 |-0. OI 1.153 | 2 © 39.666 38. 513 |+ 0. 167. . Piazziii,123.. 7 | 141 6.106 |—o. 308 |+0. 139 |4+ 0.243 |— 0. 221 |-+0. 008 5.967 | 2 29 44.547 38. 580 |+ 0, 100 Hydri..... 7 | 1 45 36.979 |—1. 202 |+0. 607 |— 1.536 |— I. 221 |+0.009 | 33. 636 | 2 34 12.439 [38.803]}) .. y (Cetis. aa ee 7 | 1 48 40.169 |—o, 256 |+0. 151 |-++ 0.223 |— 0, 220 |+0,010 | 40.077 | 2 37 18. 810 38. 733 |—0. 053 CEbh sie es i 8 7 | 1 49 58.870 |—o. 308 |+0. 191 |4+ 0.126 |— 0. 227 |-+0. 010 58.662 | 2 38 37.374 38. 712 |—0. 032 7? Eridani. ... 7| 157 9.467 |—0. 332 |+-0. 257 |+ 0.082 |— 0. 236 |+0.012 | 9.250] 2 45 47.905 38. 655 |+0. 025 12 Eridani. ...] - 7 | 2 18 31.541 |—o. 361 |+0. 280 |4+ 0.027 |— 0. 253 --o.o18 | 31.252 | 3 7 9-995 38. 743 |—0. 063 e Hydri.....{|W.| 7] 2 30 19.007 |—1.059 |+0. 821 j— 1.271 |— 0.942 |-+-0. 022 16.578 | 3 18 56.155 |+-0 48[39. 577] ; NORMAL EQUATIONS. ‘ Assuming a’ =-+0. 244 4+ da’ circle E. [ o=-+ 0.133 + 3. 346 da’ + 2.406 dce+ 3.211 0¢ | whence da’ = — 0,029 al =+0.332-+ 40 “ W. — 0. 183 + 3.763 da’? — 0.290 dc -+ 2. 409 dt Ja// = + 0.049 ¢ =+0.2144 dc « E. + 0. 358 + 2. 406 da’ — 0. 290 da’” + 22. 672. 6¢-+ 0.530 df dc =—0.012 AT =+ 08 48" 388.683 + dt + 0. o10 + 3. 211 da’ + 2. 409 da?” + 0. 530 de + 14. 810 d¢ é¢ =—0,002 a/ =-+ of.215 (circle east); a/” = + 0%.381 (circle west); ¢ == 08.202 (+ with circle E.). Chronometer No. 1254, at 15 14™.1 chron. time, ob 48m 388.680 + 08,016, slow; losing 08.021 per hour. 11959 p L——7 50 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at the Cerro Akegre, Valparaiso, by Lieut. Conmander C. H. Davis, with transit No. 1503, to determine the correction of sidereal chronometer Negus 1254. uw | | 3 : Flexure Aberra- Seconds Date. . Name of star. é = carn ae Level. | Azimuth. pe Rate. 2 corr. R, A. cheater v. = ig | of pivots. mation. sia /O|4 L__ 1883. Am». S. Ss. S. Ss. Se ie: Am S. hem. s. 5. Dec.t1|} @ Eridani . . . ©! E.] 7 | 0 44 42.743 |-+0.537 |-0. 486 |~ 0. 232 |-+ 0. 787 |-0. 022 | 43.327 | 1 33 24.097 |-+o 48[40. 770] PCRs 6) anced 7 | © 50 0.307 |+0.315 |—o. 275 |+ 0.087 |+ 0.437 |—0.020 | 0.851 | 1 38 41.698 40. 847 |— 0. 107 € Sculptoris . 7 | © 51 32.359 |-+0. 346 |—o. 302 |-- 0.042 |+ 0. 465 |0. 019 | 32. 891 I 40 13.625 40. 734 |-+ 0.006 G Ceti. 7| © 56 3.767 |+0. 297 |—o. 261 |-+ 0.113 |+ 0.427 |—0.017 | 4.326} 1 45 45.127 40. 801 |— 0. 061 y Arietis . 7 | © 58 29. 987 |-Lo. 206 |—o. 183 |-+ 0. 244 |+ 0.442 |—0.016 | 30.680 | I 47 11.311 40. 631 |+ 0. 109 B Arietis . 7 | © 59 34.010 |+0. 196 |—o. 178 |-+- 0,251 |4+ 0.447 |—0.015 | 34.711 | 1 48 15. 383 40, 672 |+ 0. 068 v Ceti... 7} 1 § 52.046 |-++0. 332 |—o. 321 |+ 0.063 |+ 0.451 0.013 | 52.558 | 1 54 33.358 40. 800 |— 0, 060 wu Fornacis.. . . 7 I 19 7.750 |++0. 368 |—o. 357 |+ o.o11 |+ 0.490 |—0.007 | 8.255 | 2 7 48.966 40. 711 |+ 0.029 6 Hydri. -' EL] 7] 1 31 1.107 |+0.716 |—o. 600 |— 0. 488 |+ 1.179 |-0.002 | 1.912 | 2 19 42.423 |-+0 48[40. 511] v2 -Eridani . . . 7 | 157 7-909 }|—0. 332 |—0. 043 |+ 0.080 |— 0.489 |+0.010 | 7.135 | 2 45 47.881 |+0 48 40.746 |— 0.006 e Arietis . Uh 2 3 56.016 |—0. 198 |—0. 008 |-+ 0. 324 |— 0. 487 |+0.012 | 55.659 | 2 52 36.500 40. 841 |— 0. 1or @ Cetia « « 7 | 2 7 34.169 |—o. 253 |+-0. 002 |-+ 0, 224 |— 0.456 |-+0. 014 | 33.700 | 2 56 14.417 40.717 |+ 0,023 6 Arietis . 7 | 2 16 21.177 |—o. 204 |-Lo. 023 |-+ 0.314 |— 0. 482 |+0.018 | 20.846 | 3 5 1.488 40. 642 |-+ 0, 098 12 Eridani . ... 7 | 2 18 30.004 |—o. 361 |+0.047 |+ 0.027 |— 0.522 |+0.019 | 29.214 | 3 7 9.976 |° 40. 762 |— 0.022 « Hydri.. 7 | 2 30 19.493 |—1.059 |+0. 256 |— 1.248 |— 2.156 |+0.024 | 15.310 | 3 18 55.927 [40. 617] T6 Eridani ol 2s 7 | 2 53 12.809 |—-0. 339 |+0.127 |+ 0.067 |— 0.496 |-+0. 034 | 12.202 | 3 41 52.920 40. 718 |-+-+ 0.022 y Hydri. . . «| W.| 7] 3 © 28.564 |—o. 888 |+-0. 344 |— 0.934 |— 1.713 |+0.037 | 25.410 | 3 49 6.236 |+0 48[40. 826] " NORMAL EQUATIONS. a Assuming a@/ =—- 0. 263+ da’ circle E. O=— 0.117 + 2. 609 da’ + 1.214dc+ 2.035 d¢ |] whence da’ —-+ 0,031 a//—+0.403+ da’ “ W. + 0. 133 + 3.673 da//— 0.314dc4+ 2.151 dt 6a// = — 0, 029 ¢ =+0. 396+ dc cE. — 0. 859 + 1. 214 da’ — 0. 314 da’’ + 22. 202 dc + 1. 649 d¢ dc =-+ 0.041 AT =-+ 08 48™ 408,744 + dt L + 0.021 + 2.035 da’ + 2.151 da’’/ + 1.649 dc + 13. 884 d¢ df =—0.006 a/ = + 08.294 (circle east); a/” = + 08.374 (circle west) ; ¢ == 08.437 (+ with circle E.). Chronometer No. 1254, at 1 35™.2 chron. time, ob 48™ 40°.740 + 08.013, slow; losing 08.024 per hour. Dec.17| f Tauri. . -.| E.| 7 | 2 35 44.486 |+0. 226 |+-0, 102 |+ 0.190 |+ 0.277 |—o0. 014 | 45.267 | 3 24 29.798 |-+0 48 44.531 |+ 0. 136 e Eridani. . ‘i 7 | 2 38 43.987 |+0. 294 |+0.020 |4+ 0. 104 |+ 0.275 |0. 012 | 44.668 | 3 27 29. 375 44.707 |— 0.040 6 Eridani.... 7 | 2 48 57.553 |+0.295 |+0.027 |-++ 0. 103 |-+ 0.275 |—0. 009 | 58.244} 3 37 43.018 44.774 | 0. 107 76 Eridani . 7 | 253 7-504 |+0. 339 |+0. 033 |-+ 0.047 |-+ 0.296 |—0.008 | 8.211 | 3 41 52.906 44. 695 |— 0.028 y Hydri... 7 | 3 © 19.864 |+0. 888 |+-0.099 |— 0.649 |4 1.020 |—0.005 | 21.217 | 3.49 5.980 [44.763]} .. y Eridani. . 7 | 3 3 53-179 |+0. 306 |+0. 037 |4+ 0.088 |4 0.279 |—0. 004 | 53.885 | 3 52 38. 609 44.724 | 0.057 a Tauri 7 | 3 5 31.603 |4+0. 227 |+-0.028 |4 0.188 | 0.277 |—0. 004 | 32.319 | 3 54 16.962 44. 643 |+ 0.024 -Al Tauri. . alt ge 7 | 3 9 6.860 |-+0. 196 |+0,025 |+ 0, 229 |+ 0.292 |—0.002 | 7.600] 3 57 52.202 44. 602 |-+ 0. 065 d} Apodis,S.P . .| E.| 7} 3 14 15.386 |—0.572 |—0.074 |} 1.203 |— 1.526 |—0, oof | 14.416 | 16 2 59.506 |+o 48[45. 090] o? Eridani . . .{ W.] 7 | 3 21 13.174 |—0. 288 |-+-0. 297 |-+ 0.065 |— 0. 310 |+0. 002 | 12.940 | 4 9 57.671 |+0 48 44. 731 |— 0.064 y Tauri. . : 7 | 3 24 28.923 |—0. 217 |+-0. 224 |4+ 0.118 |— 0.318 |+0. 003 | 28.733 | 4 13 13.370 44. 637 |+ 0.030 y Apodis,S.P. . 7 | 3 26 50.736 |+0. 590 |—o. 609 |-+- 0.717 |+ 1.375 |+-0.004 | 52.813 | 16 15 37.549 [44.736]] .- . e Tauri. 7 | 3 33 8.001 |—o. 205 |-+0, 221 |+4 0.127 |— 0. 324 |40.006 | 7.826] 4 21 52.483 44.657 |-- 0.010 6 Mense : 7 | 3 37 16.150 |—1. 289 |+1.420 |— 0.678 |— 1.858 |+0. 007 | 13.752 | 4 25 56.882 [43. 130] a Triang.Aus.S.P. 7} 3.47 35-707 |+0.179 |—0. 206 |4+ 0.411 |+- 0.750 |+0. 010 | 36.851 | 16 36 21. 336 [44.485]} .. & Eridani 7 | 3 50 59.436 |—o. 274 |0. 318 |+ 0.075 — 0. 308 |+0.012 | 59.259 | 4 39 43. 828 44. 569 |-+ 0.098 m Orionis . - | 7 | 3 54 49.827 |—0. 244 |--0. 283 |+ 0.098 |— 0. 309 |+0. 013 | 49.668 | 4 43 34.437 44.769 |— 0. 102 e. Leporis ...| W. 7 4 II 50.399 |—0. 335 |+0. 346 |-+ 0.030 |— 0. 332 |+0.019 | 50.127 5 © 34.754 |+o 48 44.627 |+ 0.040 { “ NORMAL EQUATIONS. rn Assuming a’ =-+ 0. 294+ da’ circle E. oS 059 + 4. 794 da’ + 0.826 de+4 3.682 d¢ ] whence da’ = —0.034 a/? = -+0.206 + dae « W. + 0. 250 + 6.544 da’” + 1.433dc+ 4.097 dt | da// = — 0.054 ¢ =+0.316+4 dc oe Ee + 0. 663 + 0. 826 da’ + 1. 433 da’/ + 23. 366de+ 1.869 a dc ==—0.027 AT = -+ 08 48™ 448.643 + dé L — 0, 069 + 3. 682 da’ + 4.097 da’/” + 1. 869 dc + 13. 567 dt cd =+ 0.034 a’ = -+ 08,260 (circle east); a/” = + 0°.152 (circle west); c= 08.289 (+ with circle E.). Chronometer No. 1254, at 34 16™.3 chron. time, o? 48™ 445. 667 + 08.014, slow; losing 0%.015 per hour. IN MEXICO AND OENTRAL AND SOUTH AMERICA. 51 Transits of stars observed at the Cerro Alegre, Valparaiso, by Lieut. ee C. H. Davis, with transit No. 1503, to determine the correction of sidereal chronometer egus 1254. 3 . Flexure Aberra- Seconds Date. Name of star. : a Re ae Sate Level. | Azimuth. ee Rate. of corr. R. A. pinohenele Uv. ‘ 9 . of pivots. mation. Benen oz 1883. hi me S$. Ss. Ss. s Ss. ve $ him. 5s. him Ss. $5 Dec. 18/6 Arietis.. . . .) E.) 7] 2 16 15.537 |+0. 204 |+0.079 |+ 0.245 + 0. 280 |—0.010 | 16.335 | 3 5 1.475 |+0 48 45.140 |— 0.042 12 Eridani . . . . 7 | 2 18 23.980 |+0. 361 |+0. 140 |+ 0.021 |+ 0. 303 |—0. 009 | 24.796 | 3 7 9.938 45.142 |— 0.044 t -Azetis,.. 2 2 « 7| 2 19 30.036 |+0. 199 |4+0.077 |+ 0.251 |+ 0. 282 |—0. 009 | 30.836 | 3 8 15.806 44.970 |+ 0.128 ¢ Hydri.. ... 7 | 2 30 8.786 |+1.059 |+0. 336 |— 0.974 |+ 1.250 |-0.005 | 10.452 | 3 18 55.470 [45.018] fo Faun ee hos : 7 | 2 35 43-929 |+-0. 226 |+0.055 |+ 0.214 |+ 0 270 |—0. 003 | 44.691 | 3 24 29.796 ; 45.105 |— 0.007 e Eridani. .. .| E.!| 7 | 2 38 43.489 |+0. 294 |+0.057 |+ 0.117 |+ 0.268 |—o. 002 | 44.223 | 3 27 29.373 |+o 48 45.150 |— o. 052 6 Eridani.... 7 | 2 48 58.110 |—o. 295 |-Lo. 324 |+ 0.136 | 0. 305 |-+0. 002 | 57.972 | 3 37 43-017 |+0 48 45.045 |+ 0.053 ré Eridani . 7| 253 8.141 |—0. 339 |-+o. 350 |+ 0.062 |— 0. 327 |10.004 | 7. 891 3 41 52.902 45.011 |+ 0. 087 y Hydri... 7 | 3 © 23.014 |—o. 888 |+1.012 |— 0.859 |— 1.130 |+0.007 | 21.156 | 349 5.932 [44. 776] y Eridani. ... 7 3 53-591 |—0. 306 |+0. 366 |-+ 0.117 |— 0. 309 |-+0. 008 | 53.467 | 3 52 38.607 45.140 |— 0. 042 A Tauri 71 3 5 31.810 |—o. 227 |+0. 277 |+. 0.250 |— 0. 307 |-+0. 009 | 31.812 | 3 54 16. 963 45.151 |— 0.053 v Tauri. . ls 7| 3 8 15.720 |—o. 247 |-Lo. 312 |4 0.216 |— 0. 302 |+0.010 | 15.709 | 3 57 0.830 45.121 |— 0,023 dt Apodis,S.P.. .| W.] 7 | 3 14 12.200 |+0.572 |—0.774 |+ 1.592 |+ 1.313 |-+0.012 | 14.915 | 16 2 59.576 |+0 48[44. 661] NORMAL EQUATIONS. s. Assuming a’ = + oe + da’ circle E. [ o=-+ 0. 182 + 3.104 da’ + 1.680 dc-+ 2.617 d¢ ) whence da’ —=—0, 035 . a// = -+0.305-+ da “« W. — 0, 105 + 3.718 da’ + 0.717 dc+ 2.298 dt da// = + 0. 039 ¢ z=+0.316+4 dc ff oS | + 0.597 + 1. 680 da’ + 0.717 da’’ + 16.732 de + 0.447 d¢ dc =— 0.034 AT = + ob 48™ 458.096 + de. + 0. 084 + 2. 617 da’ + 2. 298 da’/’ +- 0.447 dc + 10. 296 d¢ df ==—0.007 a/ = + 04,292 (circle east); a// == + 0°.344 (circle west); ¢ = 08.282 (+ with circle E.). ° Chronometer No. 1254, at 24 42™.8 chron, time, ob 48™ 45.098 ++ 08.014, slow; losing 08.024 per hour. Dee..20 | y Ceti... 2 aa E.| 7] 1 48 31.640 |+v. 256 |+0.017 |4+ 0.115 |+ 0.297 |—0. 017 | 32.308 | 2 37 18.746 |+u 48 46.438 [4 0.171 nw Ceti 7 I 49 50.094 |+0. 308 |—0. 079 |+ 0.065 |+ 0.307 \—0.016 | 50.679 | 2 38 37. 306 46.627 \— 0.018 7? Eridani. .. . 7| 156 0.613 |+0. 332 |\—0. 085 |+ 0.042 |+ 0.319 |—0.015 | 1.206 | 2 45 47.831 46.625 |— 0.016 y Eridani.... 7 | 2 1 59.710 |+0. 292 |—0.075 |+ 0.080 |-+- 0.301 |—0,013 | 0.295 | 2 50 46.941 46. 646 |— 0. 037 e Arietis. 7 | 2 3 49.287 |+0.198 |—0. 051 |+ 0,170 |+ 0.318 |—0. 012 | 49.910 | 2 52 36.454 46.544 |+ 0.065 © CR se SG ss a 7 | 2 7 27.197 |+0. 253 |—0. 065 |+ 0.118 |+ 0.298 |~0. 011 | 27.790 | 2 56 14. 391 46. 601 |-++ 0. 008 « 12 Eridani 7 | 2 18 22.636 |+0. 361 |—0. 093 |+ 0.014 |+ 0. 341 |—0. 008 | 23.251] 3 7 9.924 46.673 — 0.064 b TAY ATT oe ss cad 8 7 | 230 7.179 |+1.059 |—0. 336 |— 0.657 J+ 1.407 |—0.004 | 8.648 | 3 18 55.326 [46. 678] r Eridani. . ..| . 7| 253 5-574 |+0. 339 |—0. 142 |+ 0.035 |-+ 0.324 |4+0.003 | 6.133] 3 41 52.894 46.761 |— 0. 155 y Hydri.....| E.| 7] 3 © 18.407 |+-0. 888 |—o. 400 | 0.492 |4 1.118 |+0.005 | 19.526, 3 49 5.837 |+0 48[46. 311] y Tauri... ...| W.} 7/] 3 8 14.521 |—0. 247 |+0. 143 |-+ 0. 202 |— 0. 335 |+0.007 | 14.291 | 3 57 0.829 |+0 48 46.538 |+ 0.071 él Apodis,S.P.. . 7} 3 14 10.493 |+0.572 |\—o0. 382 |+ 1.486 |+ 1.477 |+0.009 | 13.655 | 16 2 59. 704 [46.049]' . o! Eridani.... 7 | 3 17 27.443 |—0. 286 |-Lo. 206 |+ 0. 141 |— 0.336 |+0.010 |; 27.178 | 4 6 13.782 46. 604 ++ 0. 005 o Bildani A cesses 7 | 3 21 11.220 |—o, 288 |+0. 223 |+ 0.138 / 0.336 |-to.orr | 10.968! 4 9 57.671 | 46.703 '— 0.094 5 Mense ... 7 | 3.37 14.200 |—1. 289 [41.248 |— 1.431 |— 2.015 |4-0.016 | 10.729 | 4 25 56.698 [45. 969], a Tauri. : 7 | 3 40 31.313 |—0. 214 |+0. 214 |-+ 0. 254 |— 0. 347 |+0.017 | 31.237 | 4 29 17.760 46. 523 jt 0. 086 53 Eridani. ...| . 7 | 344 7.326 |-o. 309 |+0. 318 |+ 0. 105 | 0.344 |+0.018 | 7.114 | 4 32 53. 682 46. 568°'-+ 0. 041 e Leporis W.| 7} 4 11 48.394 |—0. 335 |+0. 303 |+ 0.063 |— 0. 361 |+0.026 | 48.090] § © 34. 763 |+0 48 46. 673 = 0. 064 NORMAL EQUATIONS. 0 =—0. 024 + 3. 587 da’ + 0.765 dc-+ 2.965 d¢ + o. 168 . + 4. 288 da’? + 0.368 de-+ 2.933 dt — 0, 826 + 0, 765 ba’ + 0. 368 da/’ + 22.987 de -+ 3. 217 dt + 0.079 + 2.965 da’ + 2.933 da? + 3. 217 de + 14. 350 dt de Assuming a’ =-0.192- da’ circle E. a= +0.358-+ da” “« W. ¢ z=+0.278+ dec “ E AT = + oF 48™ 468.608 + de. a/ = + 08.197 (circle east); a// = + 08.321 (circle west); «= 08315 (+ with circle E.). $ whence da’ = + 0.005 Chronometer No. 1254, at 24 44™.5 chron. time, 0% 48™ 46%.609 + 08.015, slow; losing 0%.026 per hour. da// = — 0. 037 d¢ =+0.037 é¢ ==—0.007 52 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at the Cerro Alegre, Valparaiso, by Lient. Commander C. H. Davis, with transit No. 1503, to determine the correction of sidereal chronometer ~ af == + 08.322 (circle east); a/” = + 08.237 (circle west); c= 0*.335 (+ with circle E.). Chronometer No. 1254, at 3" 10™,6 chron. time, 04 48™ 488.636 + 08.022, slow; losing 0*.032 per hour. Negus 1254. 3 Fl Ab g exure erra- 5 Date. Name of star. : s be Nes, | ao Level. | Azimuth. oe Rate. ofcor. R.A. ee v 2 : of pivots, mation. peers 5 0 | 4 1883. him. ». Ss. ry S. Ss. Ss. 5 h. mS. h. mM. 5. 5. Dec. 22] 6 Arietis.. . ..| E.| 7 | 2 16 13.493 +0. 204 |-+0. 106 |— 0.029 |-+ 0.340 |—0. 016 | 14.098 | 3 5 1.460 |+0 48 47. 362 |+ 0.060 12 Eridani. . .. 7 | 2 18 21.631 |-+o. 361 |-+-0.093 |— 0.002 |-++ 0, 369 |—o.015 | 22.437 | 3 7 9.907 47.470 |— 0.048 Hydris 2% 2% 7 | 2 30 4.921 |+1.059 |-+0. 202 |-+ 0.113 |+ 1.521 —o.o12 | 7.807 | 3 18 55.176 [47.372]} .. YP TRUE Se ae 7 | 2 35 41.891 |+o. 226 |+0. 035 |— 0.025 |+ 0.329 |—0. 010 | 42.446 | 3 24 29.781 47-335 |+ 0. 087 e Eridani. ... 7 | 2 38 41.374 |+o. 204 ++-0, 038 |— 0. 014 |-+ 0, 326 |—0. 009 | 42.009 | 3 27 29.359 47.350 |+ 0,072 6 Eridani 7 | 2 48 54.841 |+0. 295 |+0.022 |— 0.013 J+ 0. 326 |—o0. 005 | 55.466 | 3 37 43.006 47.540 |— 0.118 76 Eridani. . ..| . 7 | 253 4.634 |+0. 339 |+0.015 |— 0.006 |-++ 0. 350 |—0.004 | 5.328 | 3 41 52.884 47-556 |— 0. 134 y Hydri. ..| EL} 7 | 3 0 16.529 |+0.888 | 0.000 |+ 0.085 |+ 1.208 |~o. 001 | 18.709 | 3 49 5.740 |-+0 48[47. 031] v Tauri. . 7| 3 8 13.579 J—0. 247 |+0.271 J+ 0.199 |-- 0.359 |+0. 001 | 13.444 | 3 57 0.827 |-+0 48 47. 383 |4 0.039 A! Tauri. . ; 7| 3 9 4.847 |-0. 196 |10. 217 |-+ 0.279 |— 0. 384 |-+0.001 | 4.764] 3 57 52.196 47.432 |— 0.010 6! Apodis,S.P . . 7 | 3.14 9.643 |4-0.572 |, 681 |+ 1.467 |+ 1.596 |+0. 003 | 12.600 | 16 2 59. 855 [47-255]| . o Fridani. . . 7 | 3.17 26.596 |—o. 286 |-+-0, 354 |-+ 0.139 |— 0. 360 [10.004 | 26.447 | 4 6 13.776 47. 329 |+ 0.093 o? Eridani. ... 7 | 3 21 10.363 |—o. 288 |-Lo, 371 |-+ 0.136 |— 0. 360 [40.005 | 10.227 | 4 9 57.668 47.441 |— 0.019 6 Tauri... .. 7 | 3 27 29.224 |—o. 211 |+0. 284 |+ 0. 256 |— 0. 374 |+0. 008 | 29.187 | 4 16 16.579 47. 392 |-+ 0.030 @ RAUEE S).. a3) 4 7] 3.33 5.116 |—o. 205 |+0. 285 + 0. 264 |— 0.377 |+0.009 | 5.092] 4 21 52.497 47.405 |+ 0.017 6 Mense ... .| . Ged 3337 12, 507 |—1. 289 |+1. 829 |— 1.413 |— 2.161 |to.o11 | 9.484 | 4 25 56. 555 [47.071] B Leporis. . . .| W.| 7 | 4 34 30.934 |—o. 329 |-+0. 468 |+ 0.072 |— 0, 382 |-+0. 030 | 30.793 | 5 23 18. 286 |-+-0 48 47.493 |— 0.071 a. NORMAL EQUATIONS. re Assuming a@/ =—o0.045- da’ circle E. | O=— 0.071 + 3.374 da’ : + 0.115 dc-+ 2,000 d¢ } whence da’ = -} 0.011 a// = 4+.0,378 +.da/7 « W. + 0. 331 + 5. 686 Ja/?7— 1.170d0c+ 4. 363 dt * da// = — 0. 061 ¢ =+0.296-+ de oe OE: — 1.029 +0. 115 da’ — 1. 170 da’ + 22,014 dc + 0.047 dt dc =+0,043 AT =-+ 08 48m47 8400-4 6¢ { +0, 044 + 2. 000 da’ + 4. 363 da/7 + 0.047 dc + 13. 350 oF é¢ =-+o.018 _ a =— 08.034 (circle east); a/” = + 0°.317 (circle west); ¢== 0°.339 (+ with circle E.) Chronometer No. 1254, at 34 4™.8 chron. time, o8 48™ 478,422 + 08.014, slow; losing o*.018 per hour. Dec. 24} ¢ Hydri. .... E 7 | 2 30 3.814 |+1.059 |+0. 706 |— 1.074 |4+ 1.502 |—0.021 | 5.986 | 3 18 55.020 |-+0 48[49. 034] . : fF Watt ec 45 7 | 2 35 40.406 |+-0. 226 |+0, 126 |+ 0. 236 |+ 0.325 |—0.018 | 41.301 | 3 24 29.770 48. 469 |4- 0. 167 ¢ Eridani.... 7 | 2 38 39.787 |+0. 294 |4+0.152 |4 0.129 | 0. 322 |—0.016 | 40.668 | 3 27 29.350 48. 682 |— 6.046 6 Eridani 7 | 2 48 53.379 |+0. 295 |-+0.155 |+ 0,127 |+ 0. 322 |—o.o11 | 54. 267 3 37 42.998" 48.731 |— 0.095 7ré Eridani . ... 7 2 53 3-233 | +0. 339 |+0. 205 |+ 0.058 |+ 0. 346 |—0.009 | 4.172 | 3 41 52.872 48. 700 |— 0. 064 y yd¥in x4 2] -« 7 | 3 0 15.514 |+0. 888 |+0, 702 |— 0. 804 |-+ 1.194 |-0.005 | 17.489 | 3 49 5.640 [48. 151] A y Eridani . ..| EL} 7) 3 3 48.929 |+0. 306 |0. 277 |+ 0, 109 |+- 0. 327 |—0. 003 | 49. 945 3 52 38.590 |+o 48 48. 645 |— 0.009 Al Tauri... . 7} 3 9 3-631 |--0. 196 |+0. 391 |4+ 0. 209 |— 0. 380 |—0. 001 | 3.654] 3 57 52.190 |+0 48 48.536 |+ 0. 100 6! Apodis,S.P. . 7 | 3.14 9.586 |+0.572 |—1. 081 |+ 1.097 |4+ 1.576 |+0. 002 | 11.752 | 16 3 0.005 [48. 253]] - - ot Eridani . .. . 7 | 3.17 25.291 |—0. 286 |+0. 523 |+ 0. 104 |+ 0. 356 |-+0.003 | 25.279 | 4 6 13.770 48. 491 | 0. 145 o Eridani... . 7 | 3 21 9.083 |—0. 288 |-+F0. 510 |4 0, 102 |— 0. 356 |+0.006 | 9.057 | 4 9 57.665 48. 608 i+ 0.028 y Tauris « » 7 |. 3 24 24.693 |—v. 217 |-+-0. 378 |+.0. 184 |— 0. 366 |+0. 007 | 24.679 | 4 13 13. 380 48.701 |— 0, 065 e Tauri 7 | 3 33 3-909 |—O. 205 |+0. 344 |+- 0.197 |— 0.372 |+0.011 | 3.884 | 4 21 52.500 48. 616 |-++ 0,020 6 Mense .. 6] 3 37 10.985 |—1. 289 [42.107 |— 1.057 |— 2.136 |+0.014 | 8.624 | 4 25 56.400 [47.776]} . . e Leporis ....|W.| 7] 4 11 46.239 |--0.335 |-+0. 346 |+ 0.047 |— 0. 382 |-Lo. 032 | 45.947 | 5 0 34.769 |+0 48 48. 822 |— 0. 186 S NORMAL EQUATIONS. é Assuming a’ =-+0,311-+ da’ circle E. ae: 056 + 2. 780 da’ — 0,508de+ 1.428 d¢ ) whence da’ =-+ 0,011 a//—=4+.0.377 + 0a” « W. + 0. 603 _—+5.172 da// — 0.551 dc+ 3. 689 dt 6a’// = — 0. 140 o- ¢ =+0.265 + dc « E, — 1.439 — 0. 508 da’ — 0, 551 da’? + 19. 519 dc — 0. 100 d¢ 6¢ =-+0.070 AT =-+ 04 48™ 488.589 + d¢ l. +- 0. 012 + 1.428 da’ + 3. 689 da’” — 0, 100 d¢ + 11. 347 dt df =+0.044 IN MEXICO AND CENTRAL AND SOUTH AMERICA. 53 Transits of stars observed at the Cerro Alegre, Valparaiso, by Lieut. Conmander C. H. Davis, with transit No. 1 503, to determine the correction of sidereal chronometer Negus 1254. wn 9 $ ; Flexure Aberra- ae Date. Name of star. z . Beige am Sa Level. | Azimuth. ae Rate. a ae R. A. Sera Uv. a a of pivots. mation. Harsh, O14 1883. hms. a S. is Ss. S. Ss. hm. 5. hem 5. 5. Dec.26}2 Hydri...../E.| 7! 230 2.614 +1. 059 |+-0. 548 |— 0. 787 |4 0.986 |—0.034 | 4.386 | 3 18 54.960 |+0 48[50.574]]| . . Ff Patti. eo aid 7 | 2 35 38.640 |+-0. 226 |+0. 138 |+ 0.173 |+ 0.213 |—0. 029 | 39.361 | 3 24 29. 757 50. 396 |-+ 0. 084 e Eridani.... 7 | 2 38 38.026 |--0. 294 |+0. 189 |+ 0.094 J+ 0. 211 |—0. 027 | 38.787 | 3 27 29. 338 50.551 |— 0.071 6 Eridani. ... 7 | 2 48 51.633 |-+0. 295 |+0. 211 |+ 0.093 [+ 0. 211 |—o. 019 | 52.424 | 3 37 42.938 50. 514 |— 0.034 v6 Eridani . . . 7| £53 1.577 |+0. 339 |-+0. 242 |4+ 0.042 |+ 0,227 |—o.015 | 2.412 | 3 41 52.859 50. 447 |-+ 0.033 ye AAs oo. gic SI cs 7 | 3 0 13.857 |+0. 888 |-0. 606 |—- 0. 589 |+ 0.783 |—o.o10 | 15.535 | 3.49 5.533 [49. 998] a y Eridani. .. .| E.| 7} 3 3 47.264 |+0. 306 |+v. 198 |+ 0,080 |+ 0. 214 |—0. 008 | 48.054 | 3 52 38.578 |+0 48 50.524 |— 0.044 ° é| Apodis,S.P. . 7) 3.14 6.864 |-+0.572 |—0, 296 |+ 1.560 |+ 1.034 |+0.001 | 9.735 | 16 3 0.207 |+0 48[50.472]] . . o! Eridani. .. . 7 | 3.17 23.533 —o. 286 |+0.185 |+ 0.148 |— 0. 246 |+0. 004 | 23.338 | 4 6 13.762 50. 424 |-+ 0.056 o? Eridani. ... 7| 3.21 7.269 \—o. 288 |--o, 223 |4+ 0.145 |— 0.246 |+0.007 | 7.110] 4 9 57.794 50. 684 |— 0. 204 y Tauri... .., 7 | 3 24 23.049 |—0. 217 |-++-0. 187 |+ 0. 261 |— 0. 253 |+0. 010 | 23.037 | 4 13 13.380 50. 343 |+ 0. 137 6 Tauri... .. 7 | 3 27 26.143 j—0. 211 |+0.197 |+ 0.272 |— 0,255 |+0.012 | 26.158 | 4 16 16.580 50. 422 |4+ 0.058 « “Tautirs jw a 3 7 | 3 33 2.004 |—o. 205 |--o. 214 |+ 0, 281 |— 0.257 |+0.017 | 2.054] 4 21 52.501 50. 447 |+ 0.033 6 Mensze 7 | 3 37 8.943 |—1. 289 |+1.416 |— 1.502 |— 1.477 |+0.020 | 6.111 | 4 25 56.217 [50.106]} .. é Leporis W.| 7 | 4 11 44.470 |—0. 335 |+0. 260 |-++ 0.066 |— o. 264 |+0. 046 | 44.243 | 5 © 34.770 |+0 48 50.527 |—0. 047 Assuming a’ ==-+0.166-+ da’ circle E. NORMAL EQUATIONS. S: S [ O=— 0. 214-1 2. 780 da’ — 0.508de-+ 1.428 d¢ ] whence Ja’ —=-+ 0.070 @// =+0.4804 da’ « W. + 0. 613 + 5.107 da//— 0. 366dc+ 3. 601 dt [ ba// = — 0. 143 _€ =+0.150+ dc i OK, — 1.503 — 0. 508 da’ — o. 366 da’’ + 19. 567 bce — 0.098 dt dc =+0.076 = -+ oF 48™ 508.439 + dt L — 0, 038 + 1. 428 da’ + 3, 601 da’? — 0,098 dc + 11. 350 dt J of =-+ 0.041 AT a’ = + 05.236 (circle east); a/” = + 0%.337 (circle west); ¢ == 0%.226 (+ with circle E.). Chronometer No. 1254, at 38 12.3 chron. time, o! 48™ 508.480 + o%.019, slow; losing 0.044 per hour. Transits of stars observed at the West Coast of America Telegraph Station, Arica, by Lieut. Commander C. H. Davis, with transit No. 1503, to determine the correction of sidereal chronometer Negus 1254. wn wT s ; Flexure Aberra- Suiits Date.| Nameofstar. |, | © lmean of threads| equality | Level | Azimuth.) “Qoye® | Rate, ofcor.) RA. | Cotton’ | 2 2 of pivots. mation. ree O|A 1884. hh. m. 5. s 5. Se Ss. 5S. Ss hem. s. Ah. Mm 9». Se Jan.21 | 6 Eridani ..../ E.| 7 | 2 43 9.186 |4+0.317 |—0.067 |-+ 0.065 |4 0.465 |--0.042 | 9.924 | 3 37 42.693 |+0 54 32.769 |— 0.013 y Tauri. .... 2 7 | 246 3.374 |+0.255 |—0. 060 |+ 0. 328 |-+ 0.500 |—0.032 | 4.365 | 3 40 37.015 32. 650 |+ 0. 106 76 Eridani 7 | 2 47 19.131 |+0. 342 |—0. 083 |— 0.043 |-++ 0.500 |—0,031 | 19.816 | 3 41 52.557 32.741 |+ 0.015 y Hydri. ‘ 7 | 2 54 30.429 |+0.661 |—0. 197 |— 1.397 |+ 1.725 |—0.023 | 31.198] 3 49 3.806] © [32. 608] y Eridani ....| E.| 7| 258 4.764 |+-0. 324 |--0. 105 | 0.037 |+ 0.472 |—0.020 | 5.472] 3 52 38.347 |+0 54 32.875 |— 0.119 o' Eridani. ... 7 | 3 11 41.453 |—0. 311 |+-0. 161 |+ 0.086 |— 0. 502 |—0. 005 | 40.882 | 4 6 13.580 |+0 54 32.688 |+ 0. 068 y Tauri. 7 | 3 18 40.886 |—o. 271 |+0.169 |+ 0.249 |— 0.516 |4+0.003 | 40.520] 4 13°13. 230 32. 710 |+ 0.046 6 Tauri. 7 | 3 2 44.026 |—o, 268 |+0.173 |+ 0.264 |— 0.521 |+0.006 | 43.680 | 4 16 16.437 32.757 |— 0.001 6 Mensze ‘ 7 | 3 31 26.564 |—o. 895 |-+-0.574 |— 2.309 |— 3.014 |+0.017 | 20.627 | 4 25 53.497 [32. 870] Lacaille, 1639. . 7 | 3 36 54.864 |—0. 996 |+0. 601 |— 2.723 |— 3.512 |+0.023 | 48.257 | 4 31 21.092 [32. 835] 3 tT Tauri. .... 7 | 3 40 46.413 |—o. 257 |+0.145 |+ 0. 308 |— 0.540 |+0.027 | 46.096 | 4 35 18. 860 32. 764 |— 0. 008 pe Eridani. ...| . 71 3.45 11.427 |—o. 305 |-+0.158 |+ 0.112 |— 0.499 |+0.032 | 10.925 | 4 39 43.697 32.772 |\— 0.016 e Leporis ..../W.| 7} 4 6 2.479 |—0. 340 |-+0.176 |— 0.033 |— 0.539 |+0.055 | “1.798 | 5 © 34.628 |+0 54 32.830 | 0.074 Se Assuming a/ — + 0.422 + da’ circle E. NORMAL EQUATIONS. s [ o=— 0.042 + 1.866 da’ — 0.625 dc-+ 0.453 d¢ ) whence day’ =-+ 0.025 a/—=+0541-+da/% « W. + 0.435 + 4.462 da/7+ 1.135 dc+ 1.742 d¢ da’! = — 0.109 c =+0.4614 dc « i — 0.117 — 0.625 da’ + 1.135 da/’ + 16.853 dc — 2.144 dt oc =+ 0,017 { + 0.034 + 0.453 da’ + 1.742 da’? — 2.144 dc + 10.226 dz J of =+0,018 AT =-+ 0b 54™ 328.731 + dt. a! = + 08.447 (circle east); a// = + 0°.432 (circle west); c= 08.478 (+ with circle E.). Chronometer No. 1254, at 34 15.9 chron. time, 04 54” 325.756 - 0.014, slow; losing 0%.063 per hour. 54 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at the West Coast of America Telegraph Station, Arica, by Lieut. Commander C. H. Davis, with Transit No. 1503, to determine the cor- rection of sidereal chronometer Negus 1254. n i Transit a a fond Seon Chronometer Date. Name of star. e = ee Rea eaunlity Level. | Azimuth. coll. Rate. oes R.A. correction: v. 2 3 | of pivots. mation. ; O14 1884. ho m3 S. a v Ss a hem 5. him 5s. Ss. Jan. 23; 6 Eridani . . . .| E.! 7 | 2 43 6.031 |+0.317 |+0. 041 |+ 0.067 |+ 0. 463 |—0.088 | 6.831 | 3 37 42.672 |+0 54 35.841 |4 0.054 76 Eridani. .. . 7 | 2 47 15.800 |+0. 342 |+0.045 |— 0.045 |+ 0.497 |—0. 083 | 16.556 | 3 41 52.529 35-973 |— 0.078 Hydri. . 2... 7 | 2 54 26.850 |+0. 661 |+v. 086 |— 1.444 |+ 1.717 |—0.075 | 27.795 | 3 49 3-639 [35-844]} . . y Eridani 7 | 258 1.593 |+0. 324 |+0. 042 |+ 0.038 |+- 0.470 |—0.072 | 2.395 | 3 52 38.320 35.925 |— 0.030 A Tauri... .. 7 | 2 59 39.956 |+0. 277 |-+0. 036 |-+ 0. 241 |+ 0.466 |—0.070 | 40.906 | 3.54 16.755 35. 849 |-+ 0.046 wo Tadrk cacy, | 2 7 |} 3 2 23.871 |+0. 182 |+0. 024 |-+ 0.190 |+ 0. 458 |—0. 066 | 24.649 | 3 57 0.613 35.964 |— 0. 069 o' Eridani . . . .| Ej} 7 | 3 11 36.880 |+0. 311 |+0. 041 |+ 0.091 |-+ 0.460 |-0.057 | 37.726 | 4 6 13.558 |4+0 54 35.832 |4 0.063 é Mense.... .| W. 7 | 3 31 23.221 |—o. 895 |+0. 693 |— 2.571 | 3.002 |—0.035 | 17.411 | 4 25 53.248 |+0 54[35.837]] - . n Geminorum.. . 7 | 5 13 18.967 |—o. 257 |+0. 315 |+ 0.342 |— 0.537 |+0.075 | 18.905 | 6 7 54.712 35. 807 |+ 0. 088 # Geminorum. 7 | 5 21 22.867 |—o. 257 |+0.315 |+ 0.342 |— 0.537 |+0. 084 | 22.814 | 6 15 58.752 35. 938 |— 0.043 B Canis Majoris 7 | 5 23 1.871 |—o. 331 |4-0. 406 |+ 0.005 |— 0. 521 |+0.086 | 1.516] 6 17 37.391 35.875 |-+ 0.020 v Geminorum.. . 7 | 5 27 30.791 |—o. 262 |+0. 321 |+ 0.321 |— 0.529 |+0. 090 | 30.732 | 6 22 6,656 35-924 |— 0.029 & Geminorum. ./|W.| 7] 5 35 38.121 |—0. 341 |-+0. 439 |— 0.040 |— 0.538 |+0.099 | 37.740 | 6 30 13.660 |+0 54 35.920 |— 0.025 . NORMAL EQUATIONS. Assuming @/ =+ ake + éa’ circle E. ( o=— 0.025 + 1.806 da’ — 0.281 dc+ 0,849 d¢ | whence da’ = deers a//—+0.5414+ da’? “« W. + 0.193 + 3.007 da’’— 0.426 dc+ 1.728 d¢ da/’ —= — 0.060 ¢ =+0.427 + dc ae Oe — 0.812 — 0.281 da’ — 0.426 da’/’ + 15.969 de+ 0.975 dt dc =-+0.049 AT ==-+ 0b 54™ 358.889 + dt. | — 0.007 + 0.849 da’ + 1.728 da’ + 0.975 dc + 11.186 d¢ J o¢ =-+ 0.004 a’ = + 0°.462 (circle east) ; a/” = + 08.481 (circle west) ; c= 08.476 (+ with circle E.). Chronometer No. 1254, at 45 3™.9 chron. time, oP 54™ 358.895 + 08.012, slow; losing 08.065 per hour. Feb. 2|a@ Argus. ...|E.| 5] 5 26 29.168 +o. 430 |—o. 222 |— 0. 422 |+. 1.009 |~0. 098 | 29.865 | 6 21 24.885 |+0 54[55.020]/ .. & Geminorum. . . 5 | 5 43 52. 886 |+0. 276 |—o. 143 |+ 0. 244 |-+ v. 628 |—0. 067 | 53.824 | 6 38 48.769 54.945 |+ 0. 048 a Canis Majoris. . 7} 5 45 8.239 |+0. 329 |—0.170 |+ 0.016 |+ 0.638 |—0.062 | 8.990| 6 40 4.115 55.125 |— 0. 132 18 Monocerotis . . 7 | § 46 54.930 |+0. 294 |—0. 152 |+ 0.164 |+ 0.613 |—0.059 | 55.790} 6 41 50.729 54.939 |+ 0.054 y Volantis. . .| E.| 7 | 6 14 51.800 |+0.578 |—o. 315 |— 1.064 |+ 1.817 |—o0.005 | 52.811 | 7 9 47.702 |+0 54[54. 891] 6 Chameeleontis. . 7 | 7 29 22.486 |—o. 735 |-+0. 380 |— 1.650 |— 2.924 |+0.138 | 17.695 | 8 24 12.569 j+0 54[54.874]] . . ° 6 Hydre . 7 | 7 36 38.460 |—o. 288 |+0.174 |+ 0.180 |— 0.656 |+0. 152 | 38.022 | 8 31 32.994 54.972 |+ 0.021 e Hydre . 7 | 7 45 45-573 |—0. 287 |+0. 193 |4+ 0. 186 |— 0.657 |+0. 169 | 45.177 | 8 40 40. 136 54-959 |+ 0.034 ny Chameleontis. . 7 |- 7 §0 32.421 |~0.791 |-+0.555 |— 1.881 |— 3. 283 |-+0.178 | 27.199 | 8 45 22. 439 [55.240]} .. ¢ Hydre . 7| 7 54 23.176 |—o. 288 |-Lo. 205 |-+ 0. 182 |— 0. 656 |+0. 186 | 22.805 | 8 49 17.855 55.050 |— 0.057 K @aneris & a) 2% 7] 8. 6 35.364 |—0. 279 |0. 193 |+ 0.217 |— 0. 664 |+-0. 209 | 35.040 | 9 1 30.006 54.966 |+ 0.027 6 Hydre . en w. 71 8 13 27.266 |--0. 294 |+0. 189 |4+ 0.156 |— 0.653 |+0. 221 | 26.885 | 9 8 21.874 |+0 54 54.989 |-+ 0.004 : NORMAL EQUATIONS. Assuming a/ aig ae da’ circle EE. ( o=—0o. 308 + 1.935 da’ — 1.194 dc + 0,011 gt ) whence da’ ae 248 a/=+10.543-+da’% “ W. | -+ 0. 199 + 3. 766 da’ + 1.143 de + 1. 443 dt da// = — 0. 112 c ==-+0. 4824+ de « EE, | — 1. 804 — 1. 194 da’ + 1. 143 a’/’ 4 15. 153 dc — 1. 382 dt 6c =-+0.150 AT = +04 54™ 548.958 + dt + 0.034 + 0. o11 da’ + 1. 443 da/’ — 1. 382 dc + 8. 855 dt dt =+ 0.035 a’ =-+ 05.456 (circle east); a/” = + 0%.431 (circle west); ¢ == 0.632 (+ with circle E.). Chronometer No. 1254, at 6" 17™.4 chron, time, o" 54™ 548.993 + 08.015, slow; losing 0%.113 per hour. IN MEXICO AND CENTRAL AND SOUTH AMERICA. 55 Transits of stars observed at the West Coast of America Telegraph Station, Arica, by Lieut. Commander C. H. Davis, with transit No. 1503, to determine the correction of sidereal chronometer Negus 1254. wi 3 = f a Aberra- Seon ds Date. Name of star. ‘ = es eaualiy Level. | Azimuth. sie Rate. | of corr. R. A. ee v. 2 . of pivots. mation. LEANSt, O14 1884. Aim. s. Ss. S. Si Se se ay him 5. him. Ss. s Feb. 4 | o? Eridani . . . .| E.| 7) 3 14 55.560 |+0. 312 |-0. 141 |+ 0.098 |-+ 0.622 \—0.078 | 56.373 | 4 9 57.270 |+o0 55 0.897 |— 0. 183 9° TANG e ein 7} 3 18 11.263 |+0. 271 |—0.095 |+ 0. 305 |+ 0.639 |—0. 069 | 12.314 | 4 13 13.048 0. 734 |— 0.020 Tauri. .... 7 | 3 21 14.494 |0. 268 |—o. 069 |+ 0.323 |-+ 0.645 |—0. 063 | 15.598 | 4 16 16.250 0. 652 |+ 0. 062 dé Mensz 5 7 | 3 30 49.636 |+0. 895 |—0. 031 |— 2.822 |+ 3.729 |\—0.041 | 51.366 | 4 25 51.639 [o. 273] Lacaille, 1639. . 7 | 3 36 15.821 |+0. 996 |+0. 066 |— 3.328 |+ 4.344 |—0.029 | 17.870 | 4 31 18.916 [1.046]} . r Tauri. 2... . ‘ 6} 3 40 16.691 |+0. 257 |--0. 033 |+ 0.377 |+ 0. 668 |—o. org | 18.007 | 4 35 18.694 0. 687 |+ 0.027 w Eridani. ...| E.| 7] 3 44 41.791 |+0. 305 |-+0.058 |+ 0.137 [4 0.617 !|—o0. 010 | 42.898 | 4 39 43.532 [+0 55 0.634 |+ 0.080 m’ Orionis ... . 7 | 3 48 33.907 |—o. 287 |+0.148 |+ 0.392 |— 0.661 |—0. 001 | 33.500] 4 43 34.217 |+0 55 0.717 |— 0.003 m+ Orionis .... 7 | 3.50 3.024 |—o. 289 |-+0. 150 |+ 0. 372 |— 0.659 |+0.003 |} 2.601 | 4 45 3.196 0.595 |+ 0.119 m6 Orionis . 7 | 3 53 13.820 |—o. 295 |+0.153 |+ 0. 323 |— 0.657 |+0.010 | 13.354 | 4 48 14.074 0.720 |— 0.006 n Mense..... 7 | 4 3 37-136 |—0.675 |+0. 349 |— 2.970 |— 2.557 |10.035 | 31.318 | 4 58 33.243 [1.925] 3 é Leporis.... 7 | 4 5 34.497 |—0. 340 |+0.176 |— 0.070 |— 0.710 |-+0. 038 | 33.591 | 5 © 34.438 0. 847 |— 0. 133 8B Leporis.... 7| 4 28 18.047 |—o. 337 |+0. 231 |— 0.024 |— 0.702 |+0.090 | 17.305 | 5 23 18.043 0. 738 |— 0.024 a@ Leporis....| . 7 | 4 32 38.370 |—o0. 331 |+0. 235 |4+ 0.009 ;— 0. 689 |+0. 099 | 37.693 | 5 27 38.422 0. 635 |+ 0.079 y Mense.....|W.| 7 | 4 41 35.629 |—o. 713 |+0.554 |— 3.298 |— 2.796 |+0. 152 | 29.528 | 5 36 31.328 +0 55 [1.800] s NORMAL EQUATIONS. ie Assuming a’ —+0.547-+ da’ circle E. o=+ 0.137 + 4.452 da’ — 1.064 dc-+ 1.807 df ) whence da’ =—0.019 a//=—+0.569+ da’? « W. — 1.058 + 3.164 da/7+ 2.093 de+ 0.315 d¢ da// = +0. 344 ¢ =+0. 645 + dc « &E. — 0. 603 — 1. 064 da’ + 2.093 da’’ + 19.573 dc — 1. 359 d¢ dc =—0.009 . AT =+ 0% 55™ 08.754 + dt + 0. 305 + 1. 807 da’ + 0. 315 da’? — 1.359 de + 11. 323 dt df = ==— 0.035 a’ = + 08.528 (circle east); a/” = + 08.913 (circle west); ¢ = 0.636 (+ with circle E.). Chronometer No. 1254, at 3 48™.9 chron. time, o8 55™ 08.714 + 08.019, slow; losing 0°.134 per hour. Transits of stars observed at the West Coast of America Telegraph Station, Arica, by Lieut. Commander C. H. Davis, with transit No. 1503, to determine the correction of sidereal chronometer Negus 1470. wn oO S : Flexure Aberra- eas Date. Name of star. & c Betis re oe Level. | Azimuth. al Rate. wal R. A. teas uU S| 6 of pivots. mation. : 0/4 1884. h. m. 5. » x » Si: $5 is he ml. 9 him. 5. S. Feb. 4| 6 Doradus....|E.| 7 | 10 17 39. 864 |+0.521 | 0.000 |— 0.905 |+4+ 1.541 |4+0.012 | 41.033 | 5 44 36.249 |—4 33 [4.784]| .. 7 Leporis.... 7 | 10 24 12.794 |-Lo. 324 |—0. 083 |-+ 0.039 /-+ 0.652 |+0. 010 | 13.736 | 5 51 8.973 4. 763 |+ 0.014 66 Orionis . 7 | 10 31 56.224 |+0. 291 \—0.075 |+ 0.195 |+ 0.634 |-+0.008 | 57.277 | 5 58 52.491 4.786 |+ 0.037 vy Orionis . 7 | 10 34 2.546 |-+0. 272 |—0.070 |+ 0. 286 |+ 0.653 |+0.007 | 3.694 | 6 oO 58.931 4. 763 |+ 0.014 ” Geminorum . F 7 | 10 40 58.126 |+0. 257 |—0.074 |+ 0.359 |-+ 0.684 |+0.005 | 59.357 | 6 7 54.621 4.736 |— 0.013 B Canis Majoris. .| E. | 7 | 10 50 41.071 |+0. 331 |—0. 105 [4+ 0.006 |+ 0.664 |4-0.001 | 41.968 | 6 17 37.306 |—4 33 4. 662 |\— 0.087 & Canis Majoris. . 7} 11 3 19.226 |—o. 341 |+0. 242 |--- 0.040 |— 0.729 |—0. 003 | 18.355 | 6 30 13.571 |—4 33 4.784 |+ 0.035 15 Monocerotis . 7 | 11 7 42.576 |—o. 281 |+0. 163 |-+ 0.232 |— 0.682 |—0. 004 | 42.004 | 6 34 37.386 4.618 |— 0.131 e Geminorum , 7 | 11 9 55.133) /—0. 252 |+0.138 |-+ 0. 367 |— 0.743 |-0. 005 | 54.638 | 6 36 49.874 4.764 |+ 0.015 a Canis Majoris. . 7) 11 13. 9.624 |—0: 329 |-+-0. 191 |-+ 0.017 |— 0.701 |—0.006 | 8.796] 6 40 4.098 4.698 |\— 0.051 € Mensz . 7 | 11 22 59. 221 |—0. 908 |+0.623 |— 2.627 |— 4.156 |—0. 009 | 52.144] 6 49 47.163 [4.981]} . . y Canis Majoris. .| . 7 | 11 31 38.256 |—o. 326 |+0. 255 |-+ 0.026 |— 0. 696 |—0. o12 | 37.503 | 6 58 32. 586 4.917 |-+ 0. 168 y Volantis. . . .| W.| 7 | 11 42 55. 336 --0, 578 |-+0. 523 |—- 1.120 |-- 1.995 |—0.016 | 52.150] 7 9 47.632 |—4 33 [4.418] Z NORMAL EQUATIONS. s Assuming a/ — + 0.538 + da’ circle E. { o=-+ 0.077 -+ 1. 904 da’ + 0.581 dc-+ 1.238 d¢ ] whence da’ —— 0.033 a//=—4+-0.448-+ da” “ W. — 0.053 + 3.492 da/’-+ 1.829 dc+ 0.495 dt | da// = + 0.032 c = +0.686+dc¢ Me; Te, + 0.520 + 0. §81 da’ + 1. $29 da’” + 16.493 de — 0. 309 d¢ dc =— 0.034 AT =— 45 33™ 48.751 + of — 0,029 + 1. 238 da’ + 0. 495 da’” — 0. 309 de + 10. 542 dt df =-+0.004 a’ = + 04.505 (circle east); 2/7 = + 08.480 (circle west) ; c== 08.652 (++ with circle E.). Chronometer No. 1470, at 104 54™.8 chron. time, 44 33™ 48.749 =: 08.017, fast; gaining 08.020 per hour. 56 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at the Central and South American Telegraph Station, Paita, by Lieut. Commander C. H. Davis, with transit No. 1503, to determine the correction of sidereal chronometer Negus 1254. a i Transit a aaa Beeeans Chronomete Date. Name of star. 7 = Ra ae equality Level. | Azimuth. colli Rate. of corr. RA Sanne v. 2 2 of pivots. mation. tanelts O14 1884. hem Ss. 5. Se S. S. 5. Ss. he mM. 9. hem 3. S. Mar. 3 | 8 Canis Majoris. .| E.| 7 | 6 4 54.959 |--o. 323 |-+0.043 |-+ 0.035 I~ 0.074 |—o. 119 | 55.167 | 6 17 36.887 |+0 12 41.720 |-+ 0.092 & Canis Majoris. . 7 | 6 17 31.143 |+0.325 | 0.000 |+ 0.050 |— 0.077 |—0. IOI | 31.340 | 6 30 13.145 41. 805 |-+ 0.007 15 Monocerotis . 7 | 6 21 55.187 |-0. 309 |—0. 012 |— 0,040 |— 0.072 |—0.094 | 55.278 | 6 34 37.052 41.774 |+ 0.038 15 Lyncis.. . . 7 | 6 34 34.893 |+-0. 268 |—0. 028 |— 0. 258 |— 0.136 |—0.076 | 34.663 | 6 47 16.562 [41. 899] y Canis Majoris. . 7 | 6 45 50.176 |+u. 322 |—0. 043 |+ 0.028 |— 0.074 |—0.059 | 50.350 | 6 58 32. 243 41. 893 |— 0.081 6 Canis Majoris. .| . 7| 6 51 0.074 j+0. 328 |—0. 044 |-+ 0.060 |— 0.079 |—0.051 | 0.288 | 7 3 42.156 41. 868 |— 0.056 y? Volantis. . ..| E.| 7] 657 3.943 |+-o. 392 |—0. 052 |-+ 0.404 |—- 0.211 |~0.042 | 4.434] 7 9 46.243 |-+0 12[41. 809] B Canis Minoris..| W.) 7 | 7 8 11.824 |—o0. 310 |+0. 208 |— 0.001 |+ 0.029 |~0.026 | 11.724 | 7 20 53.450 |+0 12 41.726 |+ 0.086 g) Cancri. . 2. 7 | 7 52 53.984 |—o. 305 |+0. 188 |— 0.002 |+ 0.030 |-+0. 041 | 53.936] 8 5 35.584 41.648 |+ 0. 164 20 Navis.. . . 7| 7 $5 20.391 |—o. 322 |+0.197 |+ 0.001 |+ 0.030 |+0.044 | 20.341 | 8 8 2.074 41. 733 |-+ 0.079 6B Cancri..... 7 | 7 57 33-680 |—v. 309 |-+0. 187 |— 0.002 |+ 0.029 |+-0. 048 | 33.633 | 8 10 15.459 41. 826 |— v. 014 a Mali. 6| 8 26 16.628 |—o. 332 |+0. 180 |-+ 0.003 |+ 0.034 |-+0. 090 | 16.603 | 8 38 58.316 41.713 |+ 0.099 e Hydre . 7 | 8 27 58.081 |—0. 310 |+0. 166 — 0.001 |-++ 0.029 |+0. 093 | 58.058 | 8 40 40. 087 42.029 |— 0. 217 @ Hydre . é 7 | 8 55 39.899 |—o. 312 |+0. 149 |— 0.001 |+ 0.029 |+0. 134 | 39.898 | 9 8 21.910 42.012 |— 0. 200 ¢ Argus... ..|W.) 7] 9 1 20.479 |—o. 360 |+0. 169 |-+ 0.009 |+ 0.056 |+0. 142 | 20.495 | 9 14 2.385 |+0 12[41. 890] NORMAL EQUATIONS. S. Se Assuming «/ =—0o0.1314 da’ circle E. f o=-+0.196-+ 3.171 da’ — 1.193d¢— 0.701 d¢ | whence da’ ——0.019 a// —— 0,087 + da’? « W. — 0. 225 + 1.723 6a/7 + 0.846 dc — 0. 149 d¢ da/’ = + 0. 081 ¢ =—0.154-+ dc £O7 Ey — 1.961 — 1. 193 da’ + 0, 846 da’” + 18. 235 dc — 1.400 dF dc =+0. 104 AT =-+ 08 r2™ 418,800 + dt — 0. 060 — 0. 701 da’ — 0. 149 da’? — 1. 400 de + 13.055 d¢ d¢ =-+0,016 a’ = — 08.150 (circle east) ; a’” == — 08.006 (circle west) ; c= 08.050 (— with circle E.). Chronometer No. 1254, at 74 25™.4 chron. time, ob 12™ 418.812 -- 08,023, slow; losing 08.089 per hour. Mar. 9/¢ Orionis ....!/E.| 7 | 5 22 0.869 |+0.315 | 0.000 |— 0.003 |— 0.095 |—0.120 | 0.966] § 34 55.555 |+0 12 54.589 |— 0.041 6 Doradus... . 6} § 31 39.989 |+v. 376 | 0.000 |4+ 0.121 |— 0. 232 |—0. IOI | 40.153 | § 44 34.470 [54. 317] 6 Leporis. . 71 § 33 26.379 |+0. 324 | 0.000 |-+ 0.017 |— 0. 102 |—-0. 099 | 26.519 | 5 46 21.061 54.542 |-+ 0.006 a Ofionis .... 7 | § 36 0.139 |+0.310 | 0,000 |— 0.012 |— 0.096 |—0.095 | 0.246] 5 48 54. 818 54.572 |— 0.024 n Leporis.... 7 | 5 38 13.717 |+0.321 | 0.000 |+ 0.009 |— 0.098 |—0. 092 | 13.857 | 5 51 8.433 54.576 |— 0.028 66 Orionis ‘ 71 § 45 57-333 |to. 312 |+v.020 |— 0. 009 |— 0.095 |—0. 080 | 57.441 5 58 52.023 54. 582 |— 0.034 22 Camelopardalis.| E.| 7 | 5 53 12.507 |+0.240 |—0.032 |— 0.156 |— 0.270 |—0. 069 | 12.220] 6 6 6.535 |+o0 12[54.315] - 24 Lyncis.... . 7 | 7 20 19.707 |—0. 267 |+-0, 108 |— 0. 112 |+ 0. 103 |+0.060 | 19.599 | 7 33 14.072 |+0 12[54.473] é Argus. 7 | 7 31 32.257 |\—o. 327 |+0. F45 |-+ 0.023 |4 0.058 |+0.077 | 32.233 | 7 44 26.874 54.641 |— 0.093 g Argus. .... 7 | 7 33 31.490 |—0. 320 |-+0.144 |4 0.010 |-+ 0.055 |-+0.079 | 31.458 | 7 46 25.792 54. 334 |+ 0.214 53 Camelopardalis . 7 | 7 38 56.157 |-o. 264 |+0. 124 |— 0.119 |4- 0. 108 |+0. 087 | 56.093 | 7 51 50.617 [54.524] if 15 Argus(t).. +. 7 | 7 49 43.664 |—0. 326 |+-0. 166 |+ 0,023 |4+ 0.058 |+0. 103 | 43.688 | 8 2 38.166 54.478 |+ 0.070 i 2 Caneri . . 7 | 7 52 40.879 |—o. 305 |+0.159 |— 0.026 |4 0.056 |+0. 108 | 4o. 871 | 8 5 35.513 54.642 |— 0.094 > B Cancri W.| 71 7 57 20.860 |—o. 309 |+0. 166 |— 0.016 | + 0.054 |++0. 115 | 20.870 | 8 10 15.392 |--o 12 54.522 |-+ 0.026 . NORMAL EQUATIONS. Assuming a 2G uae circle E. ae 035 + 3.078 da’ + 0,248 dc— 0.601 d¢ } whence da’ Zea O15 qd! —=—o.110+4+ da” « W. — 0.070 + 3.135 da’// — 2.948 dc-+ 1.247 d¢ da// = + 0.046 ¢ =—o.09stdc “« E, — 0. 229 + 0, 248 da’ — z. 948 da’’ + 17.431 de — 0. 484 0¢ 6c =-+0.021 AT = ob 12™ 548.552 + de | + 0. 061 — 0, 601 da’ + 1. 247 da’? — 0. 484 dc + 11. 302 d¢ | o¢ =—0.010 a’ = — 08.057 (circle east); 2/7” == — 0%.064 (circle west); ¢ == 08.074 (— with circle E.). Chronometer No. 1254, at 6" 40™ chron. time, o8 12™ 548.548 + 08.019 slow; losing 08.089 per hour. IN MEXICO AND CENTRAL AND SOUTH AMERIUA. D7 Transits of stars observed at the Central and South American T: elegraph Station, Paita, by Lieut. Commander C. H. Davis, with transit No. 1503, to determine the correction of sidereal chronometer Negus 1254. wa so Transit over eee peepee Seconds Ch: Date. Name of star. é : mean of threads.| equality Level. | Azimuth. soll. Rate. a corr. R.A. ieee Nas Uv. 2 3 of pivots. mation. seme O14 1884. hom. ys. 5. S. S. sf; 3 Ae him. >». him. >. Se Mar.13| y Orionis. . . .| E.] 7] 5 5 52.464 |+0. 311 |—0. 084 |+ 0.013 |— 0.018 |—0, 086 | 52.600 | 5 18 55.608 |4-0 13 3.008 |-+ 0.025 B Leporis .... 7 | § 10 14.207 |+-0. 324 ;—0. 088 |— 0.019 |— 0.019 |—o. 080 | 14.325 | 5 23 17.330 3.005 |+ 0.028 6 Orionis 7| 5 13 2.707 |-+0. 314 |—0. 085 |+ 0.005 |— 0.018 |—0.076 | 2.847 | 5 26 5.883 3.036 |— 0. 008 5 Orionis .... 7 | 5 21 52.193 |4+0. 315 |—0.078 |-++ 0.003 |— 0.018 |—0. 064 | 52.351 | 5 34 55.478 3.127 |— 0.094 y Leporis. ... 7 | § 26 35.376 |+0. 316 |—0.072 |— 0.021 |— 0.019 |—0.057 | 35.523 | 5 39 38.517 2.994 |-+ 0.039 6 Doradus.... 71 § 31 31.200 |+-0. 376 |—0. 072 |— 0.136 |— 0.044 |—0. 051 | 31.273 | 5 44 34.240 [2. 967] 6 Aurige . .. .| E.] 7] 5 36 57.264 |40. 275 |—0.037 |+ 0.094 |— 0.031 |—0. 043 | 57.522 | 5 50 0.477 |+0 13 [2.955] 66 Orionis . ... 7 | 5 45 49.127 .|~0. 312 |+0.167 |— 0.007 |— 0.024 |—0. 031 | 48.920 | 5 58 51.929 |+0 13 3.009 |4 0,024 36 Camelopardalis . 7| 5 48 10.493 |—0. 252 |+0.135 |— 0.097 |— 0.058 |—o0. 028 | 10.193 | 6 1 13.198 [3-005] 22 Camelopardalis . 7 | 5 53 3.707 |—0. 240 |+0. 129 |— 0.115 |— 0.068 |—0.021 | 3.392 | 6 6 6.312 [2. 920] 7 Geminorum 7 | 5 54 51.120 |—0, 302 |+-0. 162 |— 0,021 |— 0.026 |—0.019 | 50.914 | 6 7 54.048 3.134 |— 0. 101 9 Argus. 7 | 7 33 22.947 |—0. 320 |-F0. 129 | 0.006 |-— 0.025 |-+-0. 116 | 22.853 | 7 46,25. 732 2. 879 !|4 0.154 15 Argus (c) 7 | 7 49 35.130 |—o. 326 |+0.131 |+ 0.015 |— 0.026 |+0. 138 | 35.062 | 8 2 38.100 3.038 |— 0. 005 30 Monocerotis . .| W.| 7 | 8 6 50.700 |—o. 315 |+0.127 |— 0.001 |— 0.024 |+0. 162 | 50.649 | 8 19 53.740 |-+0 13 3.099 |— 0.066 NORMAL EQUATIONS. Assuming af =+ 6 oe -+ da’ circle E. oO = — 0.007 + 2. 647 da’ — 0.535 dc— 0.143 6¢ ) whence da’ = + eid a’/ ——0.145 + da’? “ W. —o. 161 + 3.605 da’/’— 3.519 dc+ 1.452 0¢ da// = +. 0, 103 ¢ =— 0.052 +4 dc se E. — 0.575 —0. 535 da’ — 3.519 da’’ + 17.465 dc + 0. 192 d¢ 6c =+0.055 AT =-+ of 13™ 35.033 + de. — 0. 006 — 0. 143 da’ + 1.452 da’ + 0. 192 dc + 11. 307 dt of ==—0.014 : a/ = + 08,064 (circle east); a’/ = — 08.042 (circle west); ¢ = 08.003 (+ with circle E.). Chronometer No. 1254, at 64 18™.8 chron. time, oF 13™ 3%.033 -t 08.016, slow; losing 0%.082 per hour. Mar.14| y Orionis ..../E.| 7 | 5 5 50.364 |1+0.311 |+0.063 |+ 0.008 |-— 0.080 |—0. 038 | 50.628 | 5 18 55.590 |+0 13 4.962 |— 0.032 6B Leporis.... 7 | § 10 12.203 |+0. 324 |+0. 093 |— 0.012 |— 0.086 |—o. 033 | 12.489 | 5 23 17.305 | 4.816 | 0. 114 6 Orionis .... 7 | 5 13 0.577 |+0. 314 |+0. 110 ;+ 0.003 |—-- 0.080 |—0.029 | 0.895 | 5 26 5.863 4.968 |— 0. 038 « Orionis 7 | § 16 41.297 |-Lo. 317 |+0.114 |— 0,001 |— 0, 080 |—o. 024 | 41.623 | 5 29 46.517 | 4. 894 |+ 0.036 ¢ Orionis ... .: 7 | § 21 50.031 |+0. 315 |+0.127 |+ 0.002 |— 0. 080 ;—0, 018 | 50.380 | 5 34 55.459 5.079 |— 0.149 6 Doradus.... 7 | § 31 29.121 |+0. 376 |+0. 152 |— 0.087 |— 0.195 |—o. 005 | 29.362 | 5 44 34.183 [4. 821] 36 Camelopardalis.| E.| 7 | 5 48 8.157 |+0. 252 |+0.068 |+ 0.094 |— 0.195 |+0.018 | 8.394 | 6 1 13.142 |+0 13 [4.748] 2 Lyncis..... 71 § 56 20. 786 |—0. 267 |+0. 251 |— 0. 308 |+ 0.074 |+0.029 | 20.565 | 6 9 25.461 |+0 13 [4. 886] B Canis Majoris. . 7 | 6 4 31.603 |—o. 323 |+0. 303 [+ 0.041 |-+ 0.040 |-++0. 040 | 31.704 | 6 17 36.667 4.963 |— 0. 033 10 Monocerotis . A 71 6 g 10.234 |—o. 316 |+0. 297 |— 0.001 |+ 0.038 |+0. 046 | 10.298 | 6 22 15. 188 4.890 |-++ 0. 040 g Canis Majoris. .| W.| 7 | 617 7.919 |—0. 325 |+0. 306 |+ 0.058 |+ 0. o41 |-+0.057 | 8.056] 6 30 12.921 |+0 13. 4.865 |4+ 0.065 NORMAL EQUATIONS. Assuming af =+ ences -+ da’ circle E. o=+ 0.056 + 2. 963 da’ + 0,132 dc + 0.079 d¢ | whence da’ == 6 6d a//=—o.201-+ da’? “ W. — 0.013 + 1.444 da’? — 1.315 dc + 0.174 df da’’ == +. v0. 025 ¢ =—0.074+ 0c iB: — 0. 139 + 0. 132 da’ — 1, 315 da’’ + 13. 462 de + 2.535 dt dc =+0.015 AT =-+ 05 13™ 48.932 + 0. + 0.078 4- 0.079 da’ + 0.174 da’/ + 2.535 de + 8.995 dt é¢ | =— 0.013 a/ = + 08.041 (circle east); a// = — 0*.176 (circle west); ¢ = 0%.059 (— with circle E.). Chronometer No. 1254, at 55 34™.8 chron. time, ob 13™ 48.930 + 08.019, slow; losing o*.080 per hour. 11959 D L——8 58 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at the Public Square, Galveston, by Lieut. John A. Norris, with transit No. 1504, to determine the correction of sidereal chronometer Negus 1295. 3 5 Or% ae ae Sacanee a ; : Date. Name of star. g = ea Geese. eqitality Level. | Azimuth. een Rate, 2 corr. R.A. ae uw 2 = of pivots. mation. Taney O14 1883. Alm. Ss. s $5 $ Kr st S. A. my hem. 5s. ise Mar.31) 7 CepheiS.P.. .| E.| 7 | 12 14 46.371 |—o. 261 |+0.057 |-+ 0.808 |— 1.201 |—0.055 | 45.719 | 23 4 8.838 |—1 10[36.881]} . . 6 Leonis.... . 7 | 12 18 31.717 -Lo. 300 —o. 066 |+ 0.033 |4+- 0. 339 |—0. 047 | 32.276] IT 7 55.705 36. 571 |+ 0.005 6 Crateris 7 | 12 24 8.143 |0. 212 |-0. 046 |+ 0.155 |+ 0.326 |—0.040 | 8.750 | II 13 32.246 36. 504 |— 0. 062 4 Draconis... . 7 | 12 35 6.550 |+0. 627 |—0. 137 |— 0.417 |+ 0.923 |-0.024 | 7.522 | II 24 30.671 [36.851]} . . v Leonis.... . 5 | 12 41 36.253 |+0. 246 |—o. 054 |+ 0. 108 |+ 0. 316 |—o. 016 | 36.853 | 11 31 0.160 36. 693 |+ 0. 127 B Leonis..... 7 | 12 53 44.011 |+0. 284 |—o0. 062 |+ 0.055 |+ 0.327 | 0.000 | 44.615 | 11 43 8.098 36. 517 |— 0.049 B Virgins. . .| E.| 7 | 12 55 14.616 |+0. 253 |—0. 062 |4+ 0.099 |+ 0.316 | 0.000 | 15.222 | 11 44 38.700 |—1 10 36.522 |— 0.044 nm Virginis. 2... 7113 § 32.611 |-0. 264 |—o. 109 |+ 0.026 |— 0.355 |+0.016 | 31.925 | II 54 55.287 |—1 I0 36. 638 |+ 0.072 o Virginis. ... 7|13 9 54.867 |—o. 269 |—o. or |+ 0.023 |— 0. 357 |-+0. 024 | 54.187 | 11 59 17.582 36. 605 |-+ 0.039 y Corvi 7 | 13 20 27.377 |—0. 205 |—0.057 |+ 0.051 |— 0. 368 |+-0, 032 | 26.830 | 12 9 50.312 36. 518 |— 0.048 7 Virginis. .. . 7 | 13 24 35.047 |—0. 247 |—0.059 |4 0.033 |— 0. 352 |+-0.040 | 34.462 | 12 13 57.932 36. 530 |— 0.036 « Draconis... .] . 7 | 13 39 11.279 |—0. 636 |—0.072 |— 0.134 |— 1.051 |+v.055 | 9.441 | 12 28 32. 897 [36. 544] 21 Cassiop.S.P. .| W.| 6 | 13 48 29. 658-|-Lo. 248 |+0. 006 J+ 0.245 |-+ 1.305 |+0.071 | 31.533 | © 37 54.914 |—1 10[36. 619] NORMAL EQUATIONS. Assuming @/ =-+ 0. 336 + da’ circle E. 0 = +0, 396 + 3. 562 da’ — 0.886 dc + 2.138 d¢ ) whence da’ uae a//—=+ 0.073 + da’? “« W. — 0.025 + 3.524 da’// + 0. 901 de + 2. 034 dt da// = — 0. 005 ¢ =+0.321 + dc ‘s~) JES — 0. 340 — 0, 886 da’ + 0, gor da’’ + 16. 658 dc + 1.065 dt dc =+0,013 AT =—1® 10m 368.593 + dz + 0.095 +- 2. 138 da’ + 2.034 da’/ ++ 1.065 dc + g. 670 d¢ df =+0.016 a/ = + 0%.219 (circle east); @/” = + 0°.068 (circle west); ¢ = 0°.334 (+ with circle E.). Chronometer No. 1295, at 125 55™ chron. time, 12 10o™ 36.8566 + 08.015, fast; losing o%.079 per hour. April 1| 41 Leonis Minoris .| E. II 47 39.529 |-+0. 308 |-++0. 044 |-+ 0.023 |+- 0.618 |—0. 090 | 40. 432 | 10 37 §. 732 |—I 10 34.700 |+ 0.002 42 Leonis Minoris . Il 49 57.777 |+0. 331 |+0.047 |— 0.009 |-+ 0. 661 |—0. 0go | 58.717 | 10 39 24.019 34. 698 0. 000 7 Leonis..... Il 53 42.806 j+0. 274 |+0. 039 |+ 0.070 |-++ 0.576 |—o0. 082 | 43.683 | 10 43 8.958 34.725 |+ 0.027 Groom. 1706. . 12 I 11.121 |+0.922 |+0. 130 |— 0. 834 |+ 2. 809 |—0.075 | 14.073 | 10 50 39. 338 [34-735] o lLeonis..... 12 25 42.507 |+-0. 263 |+0.037 |+ 0.086 |+ 0.569 |—o0. 045 | 43.417 | 11 15 8.795 34.622 |— 0.076 Leonis. . ... 12 53 41.773 |+0. 284 |+0. 040 |+ 0.056 |4+ 0.585 |—o. 008 | 42.730 | 11 43 8.096 34. 634 |— 0.064 8 Virginis. .. . 12 55 12.526 |+0. 253 |+0. 036 |+ 0. 100 |+ 0.566 |—o. 008 | 13.473 | 11 44 38. 699 34.774 |+ 0.076 Groom, 1852. .| E. 13 9 54.295 |+0. 875 |+0. 124 |— 0.769 |+ 2.623 |+-0.015 | 57.163 | 11 59 22.508 |—1 10[34. 655] NON ONONOSDONSONS ON POON NN ON NN y Corvi... 13 20 25. 481 —o. 205 |+0. 198 |4+ 0.046 |— 0, 628 |--0. 022 | 24.914 | 12 9 50.314 |—1 10 34.600 |— 0,098 Virginis. . .. 13 24 33.166 |—o. 247 |-+0. 253 |4+ 0.030 |— 0. 6or |-+0. 030 | 32.631 | 12 13 57.934 34.697 |— 0. 001 20 Come... 13 34 28.441 |—o. 301 |+0. 354 |+ 0.009 |— 0. 646 |+-0. 045 | 53. 233 | 12 23 53.233 34. 669 |— 0.029 « Draconis... . 13 39 9.264 |—v. 636 |+0. 791 |— 0.120 |— 1.795 |+0. 045 7.549 | 12 28 32. 894 [34- 655] : 31 Coron. Bor. 13 56 37. 763 |—0. 321 |-+0. 483 |+ 0.001 |— 0. 682 |+0. 068 | 37.312 | 12 46 2. 636 34.676 |— 0. 022 8 Draconis... . 14 1 28.179 |—0. 559 |+0. 879 |— 0.090 |— 1. 482 [40.075 | 27.002 | 12 50 52.275 [34.727]] .. % Virginis. .. . 14 14 31.384 |—o. 235 |+0. 415 |-+ 0.034 |— 0.603 |4+0.090 | 31.085 | 13 3 56. 334 34.751 |-+ 0.053 43 Come. .. .| W. 1417 2.519 |—o. 322 |--0. 582 |+ 0.001 |— 0. 684 |+0.098 | 2.194 | 13 6 27.370 |—1 10 34. 824 |4 0.126 NORMAL EQUATIONS. Assuming @” Subs pe ae circle E. O=-+ 0. 252 + 2. 452 da’ — 1.062d¢+ 0.942 d¢ ) whence da’ eee ie a//=+0.124+ de’ “« W. + 0. 132 + 2.541 da’’ + 0.166dc¢+ 1.179 d¢ da’// = — 0. 063 c =+0.600+4 dc « E, ++ 0, 246 — 1. 062 da’ + 0. 166 da’’ + 20, 443 dc -— 0. 661 dt dc =—0.017 AT =— 14 10™ 348.723 + dt — 0.173 + 0. 942 da’ + 1.179 da// — 0. 661 dc + 12. 631 dt d¢ =-+0.028 a’ = + 08.202 (circle east); 2/7 = + 0°.061 (circle west); c= 0.583 (+ with circle E.). Chronometer No. 1295, at 13 o™ chron. time, 15 10™ 348.698 + 0%.013, fast; losing 0*.075 per. hour. IN MEXICO AND CENTRAL AND SOUTI AMERICA. 59 Transits of stars observed at the Public Square, Galveston, by Lieut. John A. Norris, with transit No. 1504, to determine the correction of sidereal chronometer Negus 1295. 4 8 a ‘ ie 4 Gesonde Date. Name of star. “ 2 eee Laas: eaialiey Level. | Azimuth. ae Rate. a corr. RK, A. psn cues v, 3 3 of pivots. mation. an o|4 1883. hm. s. S S$: se a s Ss. him 5S. hm. >». oe April 2} ¢@ Geminorum E.| 7] 8 56 54.350 |40.318 | 0.000 |+ o.o11 |+- 0.718 |—o0. 052 | 55.345 | 7 46 22.153 |—1I 10 33. 192 |— 0.024 ow Cancri. . . . . 7 | 9 4 25.311 |+0. 314 |—0. 018 |+ 0.018 |+ 0.710 |—0. 037 | 26. 298 “y 53 53-099 33. 199 |— 0.017 x Geminorum 7| 9 6 54.166 |+0. 321 |—o. 024 |+ 0.006 |+ 0.726 |0.037 | 55.158 | 7 56 21.918 33-240 |+ 0.024 3. Urs MajorisH . 7 | 9 IL 44.193 |+-0. 604 |--0. 066 |— 0.440 |4 1.771 |—0.030 | 46.032 | 8 1 12.815 [33-217]} .. ¢} Cancri. . . .. ‘7 | 9 16 4.346 |+0. 292 |—0. 041 J+ 0.052 |+ 0.673 |—0.020 | 5.302] 8 5§ 32.055 33. 247 |-+ 0.031 «x CepheiS.P .. 7 | 9 23 21.914 |—o. 371 |+0.072 |+ 1.094 |— 2.924 |—0.015 | 19.770 | 20 12 46. 598 (33: 272]| 30 Monocerotis . .] . 7 | 9 30 23.073 |+0. 238 |—0. 059 |4 0.136 |+ 0.641 |—0. 007 | 24.022 | 8 19 50.739 33. 283 |+ 0.067 n Caneri. . . . E. | 7 | 9 36 30.833 j+0. 299 |—0. 089 |-+ 0. 040 |+ 0.685 | 0.000 | 31.768 | 8 25 58.645 |-1 10 33.123 |— 0.093 y Caneri. . 7 | 9 47 6.976 |—o. 302 |+0. 246 |+ 0.015 |— 0.729 |+0.015 | 6.221 | 8 36 33.021 |—I 10 33.200 |— 0.016 6 Cancri.. . .. 7 | 9 48 38. 164 |—o. 293 |+-0. 245 |+ 0.020 |— 0.713 |+0.015 | 37.438 | 8 38 4.226 . 33-212 |— 0.004 t Canerin. a @ aos 7 | 9 50 13.176 |—o. 324 |0. 276 0.000 |— 0.774 |-+0.015 | 12.369 | 8 39 39.191 33-178 |— 0.038 o? Cancri (mean) . 7 | 9 57 42.619 |—o. 330 |-+0. 317 |— 0.004 |— 0.789 |+0. 030 | 41.843 | 8 47 8.553 33. 290 |+ 0.074 p Urs Majoris . 7 | 10 2 37.421 |—o. 591 |-++0. 606 |— 0.176 |— 1.811 |+0.030 | 35.479 | 8 52 2.393 [33- 086] o? Urse Majoris. .| . 7 | 10 10 43.729 |—o. §83 |+0. 661 |— 0.171 |— 1.774 |40.044 | 41.906 | 9 0 8.572 [33- 334] 8 Hydree W.| 7 | 10 18 52.523 |—0. 254 |+0. 317 |+ 0.047 |— 0.677 |+0.052 | 52.008 | 9 8 18.795 |—1 10 33.213 |— 0.003 NORMAL EQUATIONS. Assuming a’ Behe 242 + da’ circle E. 0 =— 0,051 + 2. 809 da’ — 1.843dc-+ 1.031 df ) whence da’ ues, 008 a//=+ 0.1564 da’? « W. + 0, 102 + 1.616 da/7+ 1.422d¢— 0.077 dt da/’ — — 0.051 ¢ =+0.672+ dc “EK, + 0. 368 — 1. 843 da’ + 1. 422 da’’ + 20.032 de — 0. 049 dt dc =—0.014 AT =—1® 1o™ 338.220 + dé¢ — 0, 061 + 1.031 da’ — 0.077 da/’ — 0,049 dc + 11. 819 dt of =-+ 0.008 a’ = + 08.250 (circle east); a/” = + 08.105 (circle west); ¢ == 0.658 (+ with circle E.), Chronometer No. 1295, at 95 35™.0 chron. time, 16 rom 338.216 + 08,010, fast; losing 0*.074 per hour. April 6| @ Cancri.... : E.| 7] 9 20 35.996 |+-0. 270 |+0.070 |+ 0.131 |-+ 0.662 |—0. 153 | 36.976 | 8 10 12.040 |—1 10 24.936 + 0.113 y Caneri.. 2... 7 | 9 36 22. 393 |+0. 299 |-+0. 066 |+ 0.060 |+ 0.699 |—0. 126 | 23.391 | 8 25 58.573 24.818 |— 0.005 y Cancri..... 71} 9 46 56.711 |+0. 303 |+-0. 060 |4+ 0.053 |4 0.704 |—o0. 108 | 57.723 | 8 36 32.945 24.778 |— 0.045 « Cancri..... 7 | 9 50 2.883 |+0. 324 |+0. 062 |+ 0.001 |+ 0.748 |—0. 108 | 3.910 | 8 39 39.119 24.791 |— 0.032 p Urse Majoris. . 7 | 10 2 25.179 |+0. 591 |+-0.096 |— 0. 639 |+ 1.749 |—0. 090 | 26.886 | 8 52 2.104 [24. 692] « Cancri.. . .. 7 | 10 11 50.461 |+0. 274 |+0.039 |+ 0.121 |+ 0.665 |—0.072 | 51.488 | 9 1 26.715 24.773 |— 0.050 77 Draconis,S.P .| . 7 | 10 18 13.457 |—0. 386 |—o. 048 |+ 1.704 |— 3.053 |—0.063 | 11.611 | 21 7 47.023 [24.588]) .. 83 Cancri.. . ..}; E.| 7 | 10 22 53.043 |+0. 292 |+0.032 |-+ 0.077 |+ 0.688 |—0. 054 | 54.078 | 9 12 29.226 |—1I 10 24. 852 |+ 0.029 35 H. Ursee Majoris.| W.| 7 | 11 45 11.279 |—o. 621 |+0. 882 |— 0. 373 |— 1.985 |+0.072 | 9.254 | Io 34 44.424 |—1 10[24.830]} . . 42 Leonis Minoris . 7 | I1 49 49. 486 |—o. 331 |+0. 482 |— 0.008 |— 0. 806 |+0.072 | 48.895 | 10 39 23.970 24.925 |-+ 0. 102 Z Leonis..... 7 | 11 53 34.129 |—0. 274 |+0. 407 |+ 0.063 |— 0.702 |+0. 081 | 33.704 | 10 43 8.924 24. 780 |— 0.043 a Urse Majoris. . 7 | 12 6 59.229 |—0. 512 |-Lo. 806 |— 0. 236 |— 1.486 |+0. 099 | 57.900 | 10 56 33. 206 [24. 694] 6 Leonis..... 7 | 12 18 20.864 |—o. 300 |-10. 496 |4 0.030 |— 0.739 |--o. 117 | 20.468 | 11 7 55.671 24.797 |— 0.026 6 Crateris. ... 7 | 12 23 57.294 |—O. 212 |-Lo. 358 |-+ 0.142 |— 0.710 |+0. 126 | 56.998 | II 13 32.222 24.776 |— 0.047 o Leonis..... 7 | 12 25 33.860 |—o. 263 |+0. 449 |-+ 0.078 |— 0. 694 |+0. 126 | 33.556 | 11 15 8.771 24.785 |— 0.038 Leonis. . W.| 7 | 12 28 17.186 |—o. 274 |+0. 473 |+ 0.063 |— 0.702 |+0.135 | 16.881 | 11 17 52.019 |—1 10 24. 862 |-+ 0.039 NORMAL EQUATIONS. Assuming a/ = Hp, 311 + da’ circle E. O=— 0. 243 + 2. 752 da’ — 1.731 0c+ 1.148 df) whence da’ == -+ 0.070 a//—=+ 0.219 + da’? « W. + 0. 041 + 2.117 da’? + 0.170dc+ 1.025 dt da// = — 0, 019 ¢ =+0.692 + dc « E, + 0. 661 — 1. 731 da’ +0. 170 da’’ 4 20. 565 dc — 1.076 dt 6c =—0.021 AT ==— 15 rom 248.819 + df — 0.132 + 1. 148 da’ + 1.025 da’? — 1.076 dc + 12.900 ot J of =-+ 0.004 a/ = + 08.381 (circle east); a@/” = + 0*,200 (circle west); c= 0.671 (+ with circle E.). Chronometer No. 1295, at 11 o™ chron. time 15 10™ 24°.823 -£ 08,012, fast; losing 08.0go per hour. 60 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at the Public Square, Galveston, by Lieut. John A. Norris, with transit No. 1504, to determine the correction of sidereal chronometer Negus 1295. 4 Flexure Aberra- Seconds Date. Name of star. 3 : pe ea Sie Level. | Azimuth. Se Rate. ae R.A. ys aes uv Sig of pivots. mation. d o|a 1883. A. mS. 3 Se Ss. o a . hem. 5. hem. Ss. 5. April 9 Groom. 3241,5.P| E. 7 | 9 40 50.414 |—0, 183 |—o0. 050 |-+ 0.770 |— 2.504 |—0. 044 | 48. 403 | 20 30 29.734 |—1 10[18.669]| . . y Caneri . 7 |° 9 46 50. 366 |+0. 303 |4+0.067 |+ 0.033 |+ 0. 828 |—0. 036 | 51.561 | 8 36 32.890 18.671 |-+ 0.058 6 Canceri . 7| 9 48 28.550 |+0. 293 |+0. 062 |+ 0.046 |+ 0. 810 |—0. 036 | 22.725 | 8 38 4.113 18. 612 |— 0.001 e Caneri . 71 9 49 56.396 |+0. 324 |+0. 064 0. 000 |-+ 0. 879 |—0. 036 | 57.627 | 8 39 39.064 18, 563 |— 0.050 o? Cancri . : 7 | 9 57 25.796 |-+v. 330 |+v. 047 |— 0.008 |-+ 0. 896 |—o. 018 | 27.043 | 8 47 8.420 18. 623 |-+ 0.010 6 Hydree : 7 | 9 59 31-997 j+0. 262 |+0. 033 |+ 0.094 |+ 0.773 |—0.018 | 33.141 | 8 49 14.521 18. 620 |+ 0. 007 12 Yr. Cat. 1879,S.P 6 | 10 3 11.400 |—o. 548 |—o. 054 |+ 1.324 |— 4.473 0.009 | 7.640 | 20 52 49.120 [18. 520] ‘ « Cancri Pa ee 7 | 10 11 44.117 |+0. 274 |+0.007 |+ 0.077 |+ 0.782 | 0.000 | 45.257 | 9 1 26.670 18. 587 |— 0.026 77 Draconis, S.P .| E.| 7] 10 18 8.829 |—o. 386 |+0.009 |+ 1.078 |— 3.591 |-+0.009 | 5.948 | 21 7 47.333 |—1 10[18. 615] 83 Cancri . 7 | 10 22 48.636 |—o, 292 |-+-o. 286 |— 0.013 | 0. 847 |+0.018 | 47.788 | 9 12 29.181 |—1 10 18.607 |— 0,006 1 Draconis, H 7 | 10 30 48. 764 |—1. 213 |+1. 336 |+ 0. 364 |— 5.665 |+0.027 | 43.613 | 9 20 25.090. [18. 523] Groom, 1564 7 | 10 42 36.936 j|—o. 623 |-+-o. 843 |-+ 0.122 |— 2.325 |+0.044 | 34.997 | 9 32 16.342 (18. 655]} . . o Leonis.....] . 7 | 10 45 15.800 |—o. 272 |-Lo. 378 _— 0.021 |— 0, 818 |0.053 | 15.120 | 9 34 56.540 18. 580 |— 0. 033 e Leonis.. . . .| W.| 7 | 10 49 34.177 |—o. 309 |+0. 442 |— 0.006 |— 0. 882 |+0.053 | 33.475 | 9 39 14.820 |—1 10 18.655 |+ 0.042 NORMAL EQUATIONS. s. ve Assuming a’ =-+ 0.201 + da’ circle E. o=—o0. 110+ 5. 488 da’ — 4.360 dc + 2.254 d6¢ | whence da’ —-+ 0.040 a// =— 0.0444 da’? * W. + 0, 005 + 2.159 da’/’ + 2.079 dc + 0. 003 d/ 6a’// == — 0. 021 ¢ =+0.767 + dc « E. — 0. 149 — 4. 360 da’ + 2.079 da’// + 19. 729 dc + 1. 113 d¢ 6c =+0.019 AT =— 1" 10™ 188.603 + d¢ — 0, 004 + 2. 254 da’ + 0.003 da’/7 + 1.113 de + 9. 568 d¢ 6 =—O0,OI! a/ = + 0%.241 (circle east); 2/7 = — 0% 065 (circle west) ; c= 0*.786 (+ with circle E.), Chronometer No. 1295, at rob 10™ chron. time, 18 10™ 188,613 + 08.008, fast; losing 0*.089 per hour. Apr.ir | @ Hydre. . . .| E.| 7] 10 32 5.503 |+v. 227 |4+v.088 | 0.126 |4+ 0.708 |—o. 209 | 6.443 | 9 21 52.380 |—1 10 14.063 |+ 0.071 Groom. 1564. . 7 | 10 42 28.186 |+0, 623 |+0. 207 — 0.385 |+ 2.027 |—0. 190 | 30.468 | 9 32 16.249 [14.219]} .. o Leonis . 7 | 1045 9.564 |v. 272 |-+v. 087 | 0.067 |+ 0.713 |—0. 190 | 10.513 | 9 34 56.511 14.002 |+ 0.010 e Leonis 7 | 10 49 27.720 |-Lo. 309 |+0. 092 |-+ 0.019 |+ 0. 769 |—o. 180 | 28.729 | 9 39 14.791 13.938 |— 0.054 t Leonis . 7 | 12 32 10, 666. |v. 255 |+0. 112 |+ 0.089 |+ 0.702 |—0. 019 | 11.805 | 11 21 57.790 14.015 |+ 0.023 3 Draconis. 7 | 12 46 11.471 |4+0.579 |+0. 186 |— 0. 329 |+ 1.823 | 0.000 | 13.730] 11 35 59. 871 [13.859]} . . 8 Leonis 2) 7 | 12 53 20.813 |+v. 284 |+0.073 |+ 0.052 |+ 0.726 |-+0. 010 | 21.958 | 11 43 8.062 13. 896 |— 0. 096 8 Virginis . -| E.] 7 | 12 54 51.557 |+0. 253 |+0. 062 |+ 0.093 |-+ 0.702 |-+0. 019 | 52.686 | 11 44 38.677 |—-1 10 14. 00g |+ 0.017 x Virginis . sed We 7113 5 9,869 |—o. 264 |+0. 317 |4+ 0.028 |—- 0.743 |+0.028 | 9.235 | 11 54 55.252 |—1 I0 13. 983 |— 0. 009 Groom. 1852. . 7} 13 9 39.697 |—0. 875 |4+1. 088 |— v. 253 |— 3. 421 |+0.038 | 36.274 | 11 59 22. 202 [14. 072] 4 Draconis, H ror 7} 13-17 5.114 |—0.913 |+1.213 |— 0.271 |— 3.624 [40.048 | 1.567 | 12 6 47.728 [13. 839]}. 7 Virginis 7 | 13 24 12.494 |—0. 247 |+-0..344 |4 0.036 |— 0. 737 |+0.066 | 11.956 | 12 13 57.940 14. 016 |-+ 0.024 y Virgins... . 7 | 13 46 1.104 |—o. 245 |+0. 369 |+ 0.037 |— 0.737 |+0.095 | 0.623 | 12 35 46.691 13.932 |— 0. 060 31 Coron. Bor. 7 | 13 56 17. 266 |—o. 321 |+0. 488 |+ 0.002 |— 0. 836 |+0.114 | 16.713 | 12 46 2. 652 14. 061 |+ 0. 069 6 Virginis 7 | 13 59 59.779 |—O. 256 |+0. 392 |+ 0.031 |— 0.738 |-o. 124 59. 332 | 12 49 45. 312 14.020 |+ 0. 028 e Virginis. . . .| W.| 7] 14 6 38.279 |—0. 275 |+v. 426 |+ 0.023 |— 0.752 |+0. 133 . 37. 834 | 12 56 23.866 |—1 10 13.968 |— 0.024 NORMAL EQUATIONS. a . Assuming a” =-+0.370-+ da’ circle E. | o= + 0. 348 4+ 2. 364 da’ + 0,060dc-+ 1.366 d¢ | whence da’ Ea 165 a// — +. 0.080 + da’? “« W. — 0.038 + 3.080 da’? + 0.745 de4+ 1.526 d¢ | da// = — 0, 007 ¢ =+0.700-+4 dec “ Ej —- vu, 388 + 0. 060 da’ + 0. 745 da’” + 20.057 de + 0.476 de dc =-+0.019 AT =— 15 10™ 148.023 + dt l ~0. 158 + 1. 366 da’ + 1.526 da/’ + 0.476 dc + 12. 639 d¢ 6¢ =+0.031 a/ = +- 08.205 (circle east); @’” = + 08.073 (circle west); c = 08.719 (+ with circle E.). Chronometer No. 1295, at 124 45™ chron. time, 18 10™ 138.992 + 08.010 fast; losing 08.095 per hour. IN MEXICO AND CENTRAL AND SOUTH AMERICA. 61 Transits of stars observed at Arica, by Lieut. John A. Norris, with transit No. 1504, to determine the correction of sidereal chronometer Negus 1295. 3 Transi Be Aberra- Seconds Date, | Name of ate. | | 3 Inaanof teade| equal | Level: | Aximun.| omar | Raw, [oreo | ma. | Cumnomter |, g = of pivots. mation. net, O14 1883. Am. 5. S. a a se D S. hem. 5S. h. ml. 5. Ss. Nov.5 | Cephei.. . . .|] E.| 7/| 21 35 38.886 |+0.127 | 0.000 |-+ 0.595 |-+ 0.900 |—0. o19 40. 489 | 22 6 51.207 |+0 31[10. 718] 9 Aquarii. .. . 7 | 21 39 31.290 | 0. 282 |—o,. 008 |4 0.058 |+ 0.487 |—0. 019 | 32.090 | 22 I0 43.060 10.970 |-++ 0.003 y Aquarii. ... 7 | 21 44 28.409 |-+0. 272 |—0. 019 |+ 0.093 |-+ 0. 482 |—0. 016 | 29. 221 | 22 15 40. 260 11.039 |— 0. 066 mam Aquarii. ... 7 | 21 48 9. 806 |+0. 267 |—o0. 025 |+ 0. 108 |+ 0, 482 |—o. o14 | 10.624 | 22 19 21.630 11.006 |— 0.033 o Aquarili.... 7 | 21 53 19.113 |+0. 286 |—o. 052 |4+ 0.042 |+ 0.492 |—0. 012 | 19. 869 | 22 24 30. 780 10. 911 |+ 0.062 8B Octantis. . . 7 | 22 2 §5. 300 |-++-0. 906 |—o. 205 |— 2.107 |+ 3.460 |—0. 009 | 57. 345 | 22 34 7.660 [1o. 315] : tT Aquarii.... 7 | 22 12 15.657 |-+-0. 291 |—0.072 |+ 0.025 |+ 0.497 |—0. 005 | 16. 393 | 22 43 27.433 11.040 |— 0. 067 6 Aquarii. . ..| E.| 7 | 22 17 18.290 |+0. 295 |—0.076 |+ 0.012 |4 0.503 |—0. 002 | 19.022 | 22 48 30.061 |+0 31 11.039 |— 0. 066 a Pegasi......| W.! 7 | 22 27 49.146 |—o. 245 |-+0. 167 |+ 0.316 |— 0.539 |-+0. 002 | 48.847 | 22 58 59.780 |+0 31 10.933 |+ 0.040 @ Aquarii.... 7 | 22 32 5.840 |—o, 304 |-++0. 260 |— 0.035 |— 0.562 |+0.002 | 5.203 | 23 3 16.191 10. 988 |— 0.015 Aquarii.... 7 | 22 37 9.003 |—o. 279 |-+0, 270 |4+ 0. 115 |— 0.526 |40.005 | 8.588 | 23 8 19.540 10.952 |4+ 0.021 Pisclum. ... 7 | 22 39 59.276 |—o. 264 |+0. 269 |+ 0, 202 |— 0.522 |+0.007 | 58.968 | 23 11 9.815 10, 847 | 0. 126 ¢ Pisctum.... 7 | 23 2 49.177 |—o. 261 |-o. 304 |+ 0. 224 |— 0. 524 |+0.014 | 48.934 | 23 33 59.900 10. 966 |+ 0.007 w Aquarii. ... 7 | 23 5 32.616 |—o. 293 |-+Lo. 338 |4+ 0.033 |— 0.541 |+0. 016 | 32. 169 | 23 36 43. 088 10. 919 |+ 0.054 w# Aquarii....] . 7 | 23 7 1.256 |—0, 299 |-+0. 342 |— 0.004 |— 0.552 |+0.016 | 0.759 | 23 38 11.800 II, 041 |— 0. 068 y!' Octantis. . . .| W.| 7 | 23 14 15.021 —o. 965 +1. 109 |— 3.959 |— 4.090 |+0.019 | 7.045 | 23 45 17.750 |4+0 31[I0. 705] NORMAL EQUATIONS. Assuming @ =+ ies + da’ circle E. oO = — 0. 497 + 3. 281 da” + 0.801 d¢+ 1.599 df )} whence Ja? = ~+- oe a’ =+0.550+ da’ « W. + 0.027 + 2.298 da’’ + 0.285 dc+ 1. 286 dt da// = + 0.010 ¢ =+0.546+4 dc £0.) + 0. 685 + 0. 801 da’ + 0. 285 da’’ + 19.198 dc — 0. 222 dt dc =—0.044 AT =-+ oF 31™ 108.992 + dt + 0.095 + 1.599 da” + 1. 286 da’/’ —- 0, 222 dc + 13.517 dt 6f =— 0.030 a/ = + 0°.328 (circle east); 2/” = + 08.560 (circle west); c= 0%.502 (+ with circle E.). x Chronometer No. 1295, at 228 23™.6 chron. time, ob 31™ 108.973 + 08.011, slow; losing 0*.024 per hour. Nov.9|¢ Pegasi.....]E.| 7 | 21 7 15.526 |+0.253 |+0.042 |+ 0.299 |+ 0.463 |—0. 022 | 16.561 | 21 38 29.569 |+0 31 13.008 |+ 0. 062 6 Capricorni. . . 7 | 21 9 24.424 |+0. 295 |+0. 042 |4 0.021 |4+ 0.477 |—0. 022 | 25.237 | 21 40 38. 301 13.064 | 0.006 # Capricorni. .. 7 | 21 15 44.481 |+0. 291 |+0. 023 |+ 0.049 |+ 0.471 |—0.017 | 45.298 | 21 46 58. 365 13.067 |+ 0.003 « Aquarii.... 7 | 21 28 56.543 |+0. 292 |+0. 004 |+ 0.046 |+ 0.472 |—0. 012 | 57.345 | 22 © 10.451 | 13. 106 |—. 0.036 v Octantis. ... 4| 21 37 50.010 |+1.759 | 0.000 |— 9.790 |-++ 7.616 |—o. 010 | 49.585 | 22 9 2.428 [12. 843] y Aquarii. ... 7 | 21 44 26.220 |+0, 272 |+0. 002 |+ 0. 180 |4+ 0.457 |—0. 007 | 27. 424 | 22 15 40, 202 13.078 |— 0.008 a Aquarii ace BS) or 48 7.549 |+0. 267 |+0. 004 |+ 0.209 |+ 0.457 |—0.005 | 8.481 | 22 I9 21.581 |+v 31 13. 100 |— 0.030 B Octantis. ... 6 | 22 3 0.561 |-0. 906 |+0. 928 |— 3.006 |— 3.567 | 0.000 | 54.010 | 22 34 7.063 |+u 31[13.053] . . + Aquarli.... 7 | 22 12 14.753 |—O. 291 |-Lo. 349 |+ 0.036 |— 0.513 |+0. 005 | 14.339 | 22 43 27.377 13.038 |+ 0.032 A Aquarii. ... 7 | 22 15 21.530 |—o. 281 |+0. 348 |+ 0.084 |— 0.502 |+0. 007 | 21.186 | 22 46 34. 234 iC 13.048 | 0. 022 é Aquarii Aeneas 7 | 22 17 17.449 |—0. 295 |-Lo. 372 |+ 0.017 |— 0.518 |+0. 007 | 17.032 | 22 48 30.006 12.974 |-+ 0.096 c Aquarii. ... 7 | 22 32 3.546 |—o. 304 |-+0. 420 |— 0.029 |— 0.535 |+0.012 | 3.110 | 23. 3 16.135 13.025 |+ 0.045 ° wo? Aquarii. ...| . 7 | 23 § 30.356 |—o. 293 |+0.341 |+ 0.027 |— 0.515 |+0. 026 | 29.942 | 23 36 43.046 13. 104 |— 0.034 i Aquarii . . . .| W.| 7 | 23 6 58.983 |0. 299 |+0. 343 |— 0.004 |— 0.525 |-+0.026 | 58.524 | 23 38 11.749 |--O 31 13.225 |— 0.155 NORMAL EQUATIONS. : Assuming a@/ Save welt da’ circle E. 0 = — 0. 004 + 1. 861 da’ — 0.264dc-+ 1.148 d¢ ) whence da’ = -+ 0.003 a//=+0.492-+ 6a” “« W. "+ 0, 024 + 1.532 da" + 1.3740ce+ 0.052 0¢ 6a’! = — 0.027 ¢ =+0.464+6¢ “ E. — 0. 168 —- 0, 264 da’ + 1. 374 da’’ + 16, 292 dc — 0. 291 St dc =+0.013 AT =-+ oF 31™ 138.069 + dt — 0,002 + 1. 148 da’ + 0.052 da’// — 0, 291 de + 12.042 df o¢ =-+ 0.001 a/ = + 0°.633 (circle east); 2/7 = + 0%.465 (circle west); ¢—0%477 (+ with circle E,). Chronometer No. 1295, at 224 0™.3 chron, time, oF 31™ 138.070 ++ 08.012, slow; losing 0%.024 per hour, 62 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at Arica, by Lieut. John A. Norris, with transit No. 1504, to determine the correction of sidereal chronometer Negus 1295. w ao § Flexure Aberra- Second a Transit over | and in- 3 tion and Chronometer Date. Name of star. 4 Sl ccean of Heeadé equality Level. | Azimuth. colli. Rate. ope R.A. eoevection: uw Paid of pivots. mation. Ms sa | 0 O|4 1883. hem 8. Ss Ss. S. S: S. a hm him 5. Se. Nov.10| # Capricorni. . .| E. | 7 | 21 15 44.009 |-++0. 291 |—0. 169 |+ 0.051 |+ 0.471 |—0. 014 | 44.639 | 21 46 58.351 |+0 31 13.712 |— 0.061 20 Pegasi « 7 | 21 24 12.054 |+0. 248 |—o. 128 |+ 0. 345 |+ 0. 468 |—o. o12 | 12.975 | 21 55 26.629 13. 654 |— 0.003 « Aquarli. .. . 7 | 21 28 56.074 |+0. 292 |-0. 138 |+ 0.048 |+ 0.472 |—0. 010 | 56.738 | 22 © 10.436 13.698 |— 0.047 80 Pegasi.. ... 7 | 21 33 6.816 |+0. 260 |—o. 113 |-+ 0.269 J+ 0.459 |--o.o10 | 7.681 | 22 4 21.229 13. 548 I+ 0. 103 v Octantis. .. . 7 | 21 37 50.086 |+1.759 |~o. 702 |—-10. 115 |-+ 7.616 |—0. 007 | 48.637 | 22 9 2.061 [13.424]} .. y Aquarii. ... 7 | 21 44 25.677 |-+0. 272 |—0. 093 |+ 0.186 |+ 0.457 |—0. 005 | 26.494 | 22 15 40. 187 13. 693 |— 0. 042 m Aquarii. . .| E.| 7 | 21 48 7.093 |+-0. 267 |—o0. 083 |4+ 0.216 |+ 0.457 |—v.002 | 7.948 | 22 19 21.568 |+0 31 13.620 |-+ 0.031 o Aquarii.... 7 | 21 53 17.626 |—o. 286 |+-0. 214 |4- 0.067 |— 0.507 | 0.000 | 17.114 | 22 24 30.707 |+0 31 13.593 |+ 0.058 yn Aquarii. ... 7 | 21 58 10.926 |—o. 269 |+0. 174 |+ 0.160 |— 0.497 |+0. 002 | 10. 496 | 22 29 24.145 13.649 |-+ 0.002 B Octantis. ... 7 | 22 3 0.536 |—o0. 906 |+o0. 515 |— 3. 366 |— 3.567 |+0. 002 | 53.214 | 22 34 6.914 [13.700]} . rt Aquarii - 7 | 22 12 14.309 |—o. 291 |+0. 163 |4 0.040 |— 0.513 |+0.007 | 13.715 | 22 43 27.358 13. 643 |-+ 0. 008 a Aquarii. . 7 | 22 15 21.070 |—o, 281 |+-0. 163 |+ 0.094 |— 0.502 |+0. 010 | 20.554 | 22 46 34. 222 13. 668 |— 0.017 6 Aquarii ...| . 7 | 22 17 16.914 |—o. 295 |+0.177 |+ 0.019 |— 0.518 |+0. o10 | 16. 307 | 22 48 29. 992 13. 685 |— 0.034 @ Aquarii. . . .| W.| 7 | 22 32 3.051 |—o. 304 |+0. 275 |— 0.032 |— 0.535 |+0.014 | 2.469 | 23 3 16.121 |+o 31 13.652 |— 0.001 NORMAL EQUATIONS. Se de Assuming a’ =-+ 0.645 -+ da’ circle E. 0 =—0.017 + 2. 563 da’ — 0.339 dc+ 1.580 d¢ | whence Ja’ = - 0.009 a//=+0.532+ da’ “ W. + 0. 012 + 1.720 da’/+ 1.084 de+ 0.421 dt 6 a// = — 0.018 ¢ =-+0. 460+ dc a6) UE, — 0, 261 — 0, 339 da’ + 1.084 da’’ + 16.743 dc — 0. 266 dt 6c =+0.017 AT =+ 0 31™ 132.652 + ds. + 0. 002 + 1. 580 da’ + 0.421 da’/ — 0, 266 dc + 12.046 df 6f == 0,000 a/ = + 05.654 (circle east); 2/7 = -+ 08.514 (circle west); ¢ = 08.477 (+ with circle E.). Chronometer No. 1295, at 215 51™.9 chron. time, ob 31™ 138.651 + 08.009, slow; losing 0%.024 per hour. Nov.13| 31 Pegasi. .. .| W.|] 7 | 21 44 33.897 |—0. 250 |+0. 119 |+ 0. 288 |— 0.521 |—0. 016 | 33.517 | 22 15 48.881 |-+0 31 15. 364 |+ 0.016 6 Cephei. 7 | 21 53 37.671 |—o. 126 |+0. 062 |+ 1.026 |— 0.958 |—o. 012 | 37.663 | 22 24 53. 283 [15.620]} .. yn Aquarii. .. . 7 | 21 58 9.130 |—o. 269 |+0. 134 |+ 0.171 |— 0.510 |—o. 010 | 8.646 | 22 29 24.106 15. 460 | 0. 080 B Octantis. ... 7 | 22 2 58.357 |—0. 906 |+-0. 467 |— 3.610 |— 3.661 |—0. 010 | 50.637 | 22 34 6.467 [15. 830] t Aquarii. ... 7 | 22 12 12.601 |—o. 291 |+0. 162 |+ 0.043 |— 0.526 |—o. 006 | 11. 983 | 22 43 27. 308 15.325 [+ 0.055 a Aquarii. .. 7 | 22 15 19. 380 |—o. 281 |+0. 160 |+ 0. 101 |— 0.515 |—o. 004 | 18.841 | 22 46 34. 185 15. 344 |+ 0.636 6 Aquarii. ... 7 | 22 17 15.297 |—0. 295 |+0.172 |+ 0,021 |— 0.532 |—o. 004 | 14.659 | 22 48 29. 950 | 15.291 |+ 0.089 a Pegasi.. ... 7 | 22 27 44.644 |—0. 245 |+0.164 |+ 0.317 |— 0.527 | 0.000 | 44. 353 | 22 58 59.676 [49 31 15. 323 |+ 0.057 c Aquarii. . ..| E.| 7 | 22 31 59.889 +o. 304 |—0. 078 |— 0.933 |+ 0.506 | 0.000 | 60.588 | 23 3 16.075 |-Lo 31 15.491 |— oO. 1 @ Aquarii.... 7 | 22 37 3.133 |+0. 279 |—0. 084 |4+ 0.109 |4+ 0.473 |+0.002 | 3.912 | 23 8 19. 437 15.525 |— 0.145 y Piscium... 7 | 22 39 53.596 |+0. 264 |—o. 085 |+ 0.191 |+ 0.470 |+0.004 | 54.440 | 23 11 9. 706 15. 266 |+ 0. 114 x Pisclum... . 7 | 22 49 43.670 |+0. 267 |—o. 111 |4+ 0.174 |4- 0.470 |40. 006 | 44. 476 | 23 20 59. 800 15. 324 |+ 0.056 w? Aquarii.... 7 | 23 § 26.931 |+0. 293 |—0. 155 |+ 0,031 |4 0.487 |+0. 012 | 27.599 | 23 36 43.002 15. 403 |— 0.023 : v Aquarii.... 7 | 23 6 55.617 |+0. 299 |—0. 165 |— 0.004 |-4+ 0.497 |+0. 012 | 56.256 | 23 38 11. 696 15.440 |— 0.060 y! Octantis. 2. . 7 | 23 14 1.471 |+0.965 |—0. 580 |— 3.745 J+ 3.683 |+0.014 | 1.808 | 23 45 16. 614 [14. 806] y? Octantis. . . .| E.| 7 | 23 19 54.800 +o. 980 |—o. 631 |— 3.827 |+ 3.760 |+-0. 016 | 55.098 | 23 51 10. 806 |+0 31[15. 708] NORMAL EQUATIONS. Assuming af =-+ 486 + da’ circle W. o=— 0. 312+ 3.756 da’ — 1.477 dc-+ 2.239 d¢ ) whence da’ = + 6. 88h a/?—+0.490+ 60 “ E. —o. 180 + 3.590 da’? — 2.788 dc 4+ 0.418 dt da// — + 0. 041 ¢ =+0.502-+4 de “« EB, + 0.471 — 1.477 0a’ — 2. 788 da’’ + 20, 242 dc — 0.589 d¢ 6c =—0.012 AT =+ 0" 31™ 158.394 + ot. —o. 145 + 2. 239 da’ + 0. 418 da/’ — 0.589 dc + 12. 546 de df ==—0.005 a/ = + 08.562 (circle west); a77 = + 0°.531 (circle east); c= 0*%.490 (+ with circle E.). Chronometer No. 1295, at 225 28™.9 chron. time, 0 31™ 15%.380 + 08.016, slow; losing. 0*.020 per hour. IN MEXICO AND CENTRAL AND SOUTH AMERICA. Transits of stars observed at Arica, by Lieut. John A. Norris, with transit No. 1504, to determine the correction of sidereal chronometer Negus 1295. 63 3 eae aes Aberra- Seconds Date. Name of star. 2 = ee ed eialtly Level. | Azimuth. eee Rate. | of corr. R.A. Soe itiay v. z 3 of pivots. mation. Haan; O14 1883. hom. S. Ss. 5. Ss. S. S. Si hem 5. hom. 5. Ss. Nov.14| 8 Octantis. . . .| E.| 7 | 22 2 50.600 |+0.906 |—o. 410 |— 3. 418 |-+ 3.008 |--0. 013 | 50. 673 | 22 34 6.318 |+0 31[ 15. 645] tT Aquarii. ... 7 | 22 12 10.696 |+-0. 291 |—0. 095 |+ 0.041 |+ 0.432 |—0. 009 | 11.356 | 22 43 27.296 15.940 |— 0,052 a Aquarii . 7 | 22 15 17.581 |+0. 281 |—o. 083 |+ 0.096 |+ 0.423 |—0.007 | 18.291 | 22 46 34.173 15. 882 |++ 0.006 6 Aquarii 7 | 22 17 13.431 |+0. 295 |—o. 088 |+ 0.020 |+ 0.437 |—0.007 | 14.088 | 22 48 29. 936 15.848 |+ 0.040 @, “PeRASI 3. c es 7 | 22 27 43.001 |+0. 245 |—o0. 081 |+ 0.300 |4 0. 433 —0. 002 | 43. 896 | 22 58 59. 663 15.767 |+- 0.121 @ Aquarii.... 7 | 22 31 59.471 |-+0. 304 |—0. 116 |— 0.033 |+ 0.451 |—0. 002 | 60.075 | 23 3 16.065 15.990 |— 0. 102 o Aquarii. .. .| E. 7 | 22 37. 2.809 |+0. 279 |—0. 129 |+ 0.110 |+ 0.422 | 0.000] 3.491 | 23 8 19.423 |+0 31 15.932 |— 0.044 y Piscium . . . .| W.| 7 | 22 39 54.211 |—o. 264 |+0.120 |+ 0.210 |— 0. 459 |+0, 002 | 53.820 | 23 11 9.697 |+0 31 15.877 |+ 0.011 « Piscium... . 7 | 22 49 44.283 |—0. 267 |+0. 121 |+ 0.190 |— 0. 459 |+-0. 004 | 43.872 | 23 20 59.790 15.918 |— 0.030 % Piscium.... 7 | 22 50 50.221 |—o. 259 |+0.118 |+ 0. 240 |— 0.461 |-+0. 004 | 49. 863 | 23 22 5.751 15. 888 0. 000 7o Pegasi.. . .. 7 | 22 52 2.451 |—o. 249 |-+Lo. 115 + 0. 303 |— 0.470 |+0.007 | 2.157 | 23 23 18.081 15.924 |— 0.036 « Pisclum.... 7 | 23 2 44.334 |—o. 261 |+0. 128 |+ 0. 233 |— 0.461 |+0. 009 | 43. 982 | 23 33 59. 811 15. 829 |+ 0.059 w? Aquarii. . . . 7 | 23 5 27.721 |—o. 293 |-++0. 149 |-+ 0.034 |— 0.476 |+0. 011 | 27.146 | 23 36 42. 900 15.754 |+ 0.134 # Aquarii....] . 7 | 23 6 56.414 |—o. 299 |+0.156 |— 0.005 |— 0.485 |-0. 011 | 55.792 | 23 38 11.783 15.991 |— 0. 103 y! Octantis. . . .| W.| 7 | 23:14 8.679 |—0. 965 |--0. 573 |— 4.104 |— 3.597 |+0.013 | 0.599 | 23 45 16.467 |+-0 31[15. 868] NORMAL EQUATIONS. Assuming a’ oie ag cee circle E. ( o=-+0.020+ 1.971 6a’ — 0.729 de+ 0.758 dt ) whence da’ ic a// =+40.585 + da’? * w. | + 0.007 4-2. 482 da’? — 0. 266d¢-+ 1.838 dt | da’! = — 0, 003 =+0.443+6e “ E, | + 0.057 — 0.729 da’ — 0, 266 da’’ +. 17.655 dc — 0. 872 dt 6c =—0,004 AT =-+ oF 31™ 158.887 + d¢ lL + 0. 012 + 0. 758 da’ + 1.838 da’/’ — 0. 872 de + 13.071 dt df = 0.000 a/ = + 05.532 (circle east); a’ = + 0%.582 (circle west); c= 08.439 (+ with circle E.). Chronometer No. 1295, at 224 40™.7 chron. time, ob 31™ 158.888 + 08.014, slow; losing 0%.022 per hour. Nov. 16| 3 Pegasi. E. 7 | 21 33 3.173 |+0.260 | 0.000 |+ 0.247 |4+ 0.453 |—-0.015 | 4.118 | 22 4 21.147 |+0 31 17.029 |— 0.023 ¢ Cephei 7 | 21 35 32.029 |+0.127 | 0,000 |+ 1.088 |+ 0.842 |—o. 013 | 34.073 | 22 6 50.843 [16. 770] 3% Aquarii 7 | 21 39 25.044 |+0. 282 |-+0. 002 |+ 0.107 |-+ 0.456 |—o. oro | 25. 881 | 22 10 42.905 17.024 |— 0.018 y Aquarii. ... 7 | 21 44 22.136 |+0. 272 |+0.005 |4+ 0.170 |+ 0.451 |—0. 010 | 23.024 | 22 15 40.092 17.068 |— 0. 062 aw Aquarii.... 7 | 21 48 3.486 |+0. 267 |+0.007 |+ 0.198 |+ 0.451 |—0.008 | 4.401 | 22 I9 21. 485 17.084 |-— 0.078 « Aquarili.... 7 | 21 53 12.829 |+0. 286 |+0. 010 |+ 0.077 |+ 0. 460 |—0. 006 | 13.656 | 22 24 30. 612 16.956 |+ 0.050 9 ~=Aquarii . 7 | 21 58 6.130|+0. 269 |+0. o11 |4+ 0. 183 |+ 0.451 |—0.004 | 7.040 | 22 29 24.067 17.027 |— 0.021 6B Octantis. ...; E.; 7 | 22 2 sosr tte 906 |-+-0.048 |— 3.854 |+ 3.237 |—0. 004 | 49.490 | 22 34 6.023 |+0 31[16. 533] t Aquarii. ... 7 | 22 12 10.770 |--0. 291 |+0. 248 |4+ 0.047 |— 0.507 | 0,000 | 10. 267 | 22 43 27.278 |4+0 31 17.011 |— 0.005 a Aquarii . . 7 | 22 15 17.539 |—o. 281 |-+-0. 293 | 0.111 |— 0. 496 +0. 002 | 17.168 | 22 46 34.147 16.979 |+ 0,027 6 Aquarii. ... 7 | 22 17 13.446 |—o. 295 |-+0. 342 | 0.023 |— 0. 512 |-+-0, 002 | 13.006 | 22 48 29. 907 16. 901 |+ 0. 105 @ Aquarii. ... 7 | 22 31 59.539 |—0. 304 |+0. 426 |\— 0,038 |— 0.529 |+0.006 | 59. 100 | 23 3 16.038 16. 938 |+ 0.068 r Octantis, ... 7 | 22 39 19.914 |—3. 024 |+4. 200 |—17. 743 |—15.078 |-+0. 010 | 48.279 | 23 10 6. 383 [18.104]} . wo Aquarii . ... 7 | 23 § 26.383 |—0. 293 |+0. 341 |+ 0.036 |— 0.509 |+0.019 | 25.977 | 23 36 42.968 16.991 |+ 0.015 z’ Aquarili. ...] . 7 | 23 6 55.077 |—0. 299 |+0. 320 |— 0.005 |— 0.519 |+0.019 | 54.593 | 23 38 11.656 17.063 |— 0.057 y! Octantis. . . .| W.] 7 | 23 14 7.693 |—0.965 |+0. 897 |-- 4.344 |— 3.847 |-+0. 021 | 59.455 | 23 45 16.165 |+0 31[16. 710] NORMAL EQUATIONS. Assuming a’ Sie, pak da’ circle E. ( o=—0. 049 + 3.536 da’ + 1.401 dc-+ 2.201 d¢ ) whence da’ =e ae a’ —+0.614+ 60/7 “« W. — 0, 006 + 3.346 da’’ + 3. 306dc— 0.008 d¢ da// = + 0. 002 c =+0,.471+4+ dc « E. — 0. 033 + 1. 401 da’ + 3. 306 da/’ + 20. 023 de 4+ 0, 607 dt d¢ = 0,000 AT =-+ 06 31™ 178,009 + dt + 0. 120 + 2. 201 da’ — 0. 008 da’’ + 0. 607 de + 12. 519 dt of =— 0.013 a/ = + 0,600 (circle east); 2/” = + 0%,616 (circle west); ¢ = 0%.471 (+ with circle E.). Chronometer No. 1295, at 22" 10.4 chron. time, oF 31™ 17.006 = 0*.011, slow; losing o*.021 per hour. 64 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at Arica, by Lieut. John A. Norris, with transit No. 1504, to determine the correction of sidereal chronometer Negus 1295. n 3 ee Bee oe Reaouds eh ; Date. Name of star. i = eee cr aie del ually Level. | Azimuth. See Rate. | of corr. R.A. paar v. 3 . of pivots. mation. shanelt O14 1883. A. im. S$. S. iss y S. se $2 hm Ss. h. tm. 8. Ss. Nov.17} ¢ Cephei. . . . E. | 7 | 21 35 31.857-|+0. 127 |—o. o10 |4+ 0.544 |+ 0. 859 —0. 013 33. 364 | 22 6 50.810 |4+0 31[17.446]] .. 3 Aquarii 7 | 21 39 24.670 |+0. 282 |—0. 027 I+ 0.053 |+ 0.465 |—o.o11 | 25.432 | 22 10 42. 890 17.458 |+ 0.044 y -Aquarit . 4 4 + 7 | 21 44 21.841 |4-0. 272 |—0.031 |+ 0.085 |+ 0.460 |—o. o1r | 22.616 | 22 15 40.075 17.459 |+ 0.043 m~ Aquarii 7 | 21 48 3.103 |+0. 267 |—0. 034 |+ 0.099 |+ 0.460 |—0.009 | 3.886 | 22 I9 21.470 17.584 |— 0. 082 o ae ‘hom. him. 5. s Dec.16 ' B Cassiop. . | Ey. ¥ 23 58 26.544 |+0. 181 +-0.047 |— 1.755 |+ 0.504 |—0. 037 25.484) © 3 1.150 |-Lo 4[35.666]) . . 1 y Pegasi . F 7; © 2 40.891 |+0. 261 |+0.052 |— 0.450 |+ 0.272 |—0.037 | 40.989 | 0 7 16.487 35.498 |+ 0.013 | « Ceti. . 7| © 8 55.424 |+0. 287 |+0.030 |— 0.045 |-+ 0. 267 |—0. 032 | 55.931 | 0 13 31.406 35-475 |+ 0.036 | 44 Piscium . . 7 © 14 §2. 203 |+-0. 275 |4-0.004 |— 0. 225 |-++ 0. 263 |—0. 028 | 52.492 | 0 19 28.006 35.514 |— 0.003 12 Ceti. . | 7 | © 19 31.779 +0. 282 |—0.016 | 0.126 |+- 0. 264 |—0. 023 | 32.160 | 0 24 7.718 35-558 |— 0. 047 kK Cassiop. 7 i 021 52.894 |+0. 164 |—0. 015 |— 2.013 |+ 0.566 j—0.018 | 51.578 | 0 26 26.930 [35-352] a. Cassiop.. ... 7 | © 29 23.087 |+-0. 189 |—0. 037 |— 1.608 |+ 0. 469 |—-0.014 | 22.086 | 0 33 57.635 [35-549] : B o@etts oy ee ex E 7 | © 33 10.399 |+0. 297 |—0. 076 |+ 0.117 |+ 0.277 |—0. 009 | 11.005 | 0 37 46.544 |+0 4 35.539 |— 0.028 y Cassiop. . - +| We) 7 | © 45 11.001 |—0. 174 |+0. 220 |— 0.984 |— 0.608 | 0.000! 9.455 | 0 49 45.064 |+0 4[35. 609] fe Pisclum. . . . 7 | © §2 21.213 |—o. 269 |+0. 343 |— 0.172 \— 0. 305 |+0.005 | 20.815 | 0 56 56. 298 35-483 |+ 0.028 a Ceti. 7 0 58 10.776 |—o, 288 |+-0. 369 '|—- 0.011 |— 0. 308 |-+-0. 009 | 10. 547 I 2 46.028 35.481 |+ 0.030 ! yr Piscium . 7 I 0 42. 806 |—o. 244 |-Lo. 313 |— 0. 392 |— 0. 348 |+0.009 | 42.144 | I 5 17.704 35. 560 |— 0.049 (v Piscium 7 I 8 31.831 |—0. 247 |+0. 320 |— 0. 360 |— 0. 339 |+0.014 | 31.219 | 1 13 6.798 35-579 |— 0.068 78 Ceti. . 7 | 1 13 39.066 |—o, 286 | +0. 373 — 0.030 |— 0. 307 |-+0.018 | 38.834 | 1 18 14. 369 35-535 |— 0.024 n Piscium 7} 1 20 42.813 '—o. 261 |+0. 345 |— 0. 240 |-- 0. 313 |+0.023 | 42. 367 I 25 17.770 35. 403 + 0. 108 7 Piscium : 7 I 26 23.040 |—o. 265 |+-0. 355 |— 0. 210 |— 0. 309 |+0.028 | 22.639 | 1 30 58.147 35.508 |+ 0.003 a Eridani. . . .) W.} 7 1 28 48.020 |—o. 371 +0. 501 |+ 0.694 |— 0. 567 |+-0.032 | 48.309 | I 33 23.946 |+o0 4[35. 637] NORMAL EQUATIONS. av Ss Assuming a” =—0.978-+ da’ circle E. [ o—-+ 0.009 + 4. 530 da’ + 5.235 dc + 3.051 d¢ | whence da’ = -+ 0.006 a// = — 0.523 + da’ « W. — 0.074 +. 3.822 da’’ — 3.382d¢+ 2.914 dt da/’ = + 0. 008 ¢ =+0. 293+ de s& Es + 0. 200 + 5. 235 da’ — 3. 382 da’/’ + 20. 871 dc — 1.445 Wt é¢ =—0.010 AT = ob 4m 358.516 + dz. —0. 116 + 3.051 da’ +. 2.914 da’? — 1.445 bc + 14. 102 dt J df ==+ 0.004 a’ = — 08.972 (circle east); a” = — 0*.515 (circle west); ¢ = 0%.283 (+ with circle E.). Chronometer No. 1295, at ob 46™.6 chron. time, ob 4™ 35°.511 + 08.009 slow; losing o*.046 per hour. 1 _ : ; | = : Dec.17 | ¢ Ceti. 3 /E., 7° © 8 54.567 +0. 287 |—0. 119 ;— 0.031 |+ 0.210 |--9.058 | 54.856 | 0 13 31.393 |+0 4 36.537 + 0.136 | 44 Piscium , 7. © 14 51.130 |+0.275 —0. 119 |— 0. 156 Ie 0. 207 P9858 51.284 | © 19 27.993 36. 709 |— 0.036 | + Phoenicis. pt Bees 55-389 |+0. 332 \—0. 144 .+ 0. 473 i 0. 283 —9. 048 56. 285 | 0 20 32. 846 36. 561 |+ 0. 112 B Ceti. | i 9 © 33 9.323 | +0. 297 |—0. 150 |+ 0. 081 re 0. 218 |—0.034 | 9.735 | © 37 46.530 36. 795 ;— 0. 122 | A Hydri. ' 4, © 39 53.189 |-+0. 506 |—0. 274 |+ 2.423 + 0.830 |—0.029 | 56.645 | © 44 32.756 (36. 111]! -y Cassiop. . «jm 7 045 9.543 |+0.174 |—0.099 |— 1.289 + 0.415 |—0.024 | 8.720 | © 49 45.031 [36. 311], : ée Piscium | ee; | © 52 19.411 |+0. 269 j—0. 170 |— 0. 225 |4- 0. 209 |—0. 019 ; 19.475 | © 56 56.287 |to0 4 36.812 '— 0.139 7 Ceti. ae ie Ww. 7 Pe 58 9.766 |—o. 288 |-+0. 069 |— 0.007 |— 0.251 |--0.014 | 9.275 | I 2 46.020 +0 4 36.745 — 0.072 i Piscium ey I 0 41.781 |—o. 244 |-|-0. 069 |— 0. 228 |— 0, 284 |—0. O14 41.080 | I 5 17.693 36. 613 |-+ 0.060 | oI Ceti . ee F ey I 13 38.074 |—o0. 286 |+0. 131 '— 0.017 |— 0, 250 —0. 005 | 37. 647 1 18 14. 358 36. 711 -— 0.038 ny Piscium «| 7; 1 20 41.740 |—0. 261 |+0. 141 |— 0, 139 [— 0.255 | 0.000 | 41.226; 1 25 17.760 36. 534 |+ 0.139 v VPersei. . . * : ei) & | 1 26 18.940 |—o. 211 |-Lo. 121 |— 0. 388 |— 0.370 |+0.005 | 18.097 | I 30 54.531 (36. 434] | Stone,667. . «| . | 7 | 1 30 47.696 |—o. 367 |+0. 218 + 0.385 |— 0.451 |+-0. 010 | 47. 491 I 35 23. 762 [36.271] . . O° Geths bow ey ace 1 7 2 28 57.214 —0. 277 |+0.125 — 0.062 |\— 0, 247 |-++-0.058 | 56. 811 2 33 33-541 36. 730 |— 0.057 ‘ae Ceti . 7 2 34 0.900 |—o. 292 |10. 186 | 0.012 :— 0,255 +0.062 | 0.613 | 2 38 37.324 36. 711 — 0. 038 7? Eridani |.) 7) 2 41 11.341 |—0. 300 /+0. 271 + 0.053 —— 0. 266 10.067 | 11.166] 2 45 47.853 36. 687 |-- 0.014 | 9 Eridani . ; WwW. 7 | 2 46 10.511 |—o. 288 |-+0, 325 |-- 0.014 — 0.250 0.072 10.356} 2 50 46.956 +0 4 36.600 |+ 0.073 | i | NORMAL EQUATIONS. S. Se Assuming a@/ = —0.636-+ da’ circleE. { 0o=-- 0.150 + 3. 361 Jal — 0.327 d0c-+ 0.205 d¢ | whence Ja’ =— 0.039 al! = —0. 3284+ da” * W. + 0. 023 + 2,681 da’? — 1.582dc-+ 1.555 df da’/ = + 0, 029 ¢ =+0.195 + dc « — 0.749 — 0. 327 da’ — 1. 582 da’’ + 20. 789 de — 3.476 ot dc =+ 0.032 AT = ob 4m 368.669 + dt. +0. 548 + 0. 205 da? +. 1.555 Ja//— 3.476 dc + 14. 574 Ot 6¢ =— 0,032 a = — 0.675 (circle east); a/” == —o8.299 (circle west); ¢ = 08.227 (+ with circle E.). Chronometer No. 1295, at 1 19™.1 chron. time, ob 4™ 368.673 4. 0*.018 slow; losing 0*.047 per hour, 11959 p L-——9 66 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at Lima, by Lieut. John A. Norris, with transit No. 150.4, to determine the correction of sidereal chronometer Negus 1295. a : : | Flexure Abcrra Seegnde! : Date. . Naine Ghia a Transit es er : and a Level Asiaih, Bo" anil Rare, | ston : R.A. Chronometer #8 ; 3“ mean of threads,| equality , colli- heart | correction. ae o | 2 ‘ a transit. 1 2 og ‘of pivots. mation. A 1883. Am. Ss. Ss Ss. s Se By ee Ae it. Ss. he te ve on | ' { Dec. 18 | y Pegasi oe. EL 7 0 2 38.487 40.261 | 0.093 |— 0. 264 + 0.226 ~—>.049 38.763 oO 7 16.463 | 4-0. 4 37.700 |-+ 0.083 e Ceti, 7 0 & 53.223 10.287 +; 0.060 i 0,026 |+ 0.222 9.035 §3.731 , 0 13 31.383 © 37. 652 [+ 0. 131 B Wydri 7 0 14 55.129 |4-0.553 10.041 |+ 2.482 | 1.036 —9.030 59-221 90 19 36. 693 | [37-572] ‘ | 12 Ceti. 7 0 19 29.479 \ uv. 282 0,000 — 0.074 |-+ 0.220 —9,025 | 29.882 0 24 7.697 | 37-815 |— 0.032 i b | 7 : ie Andromed 7 0 27 48.959 + 0.244 —0.026 — 0.424 + 0.250 —».015 (48.988 0 32 26, 667 - 37-679 [+ 0. 104 i B Ceti 7 0 33. 7.926 |-+0.297 —o 049 i+ 0.068 4 0.231 —2.019 8, 463 | © 37 40.517 38.054 |— 0. 271 | : : ! | 6 Piscium ~ PET 3% (38 2.526 ae 269 —0. 059 |— 0.187 |+ 0. 221 |-->. 010 ' 2.763 | © 42 40.649 [+0 4 37.886 |— 0. 103 | , 4 Mydri W. 4 0 39 54.078 |v, 506 40.529 |+ 1.777 — 1.039 2.095 54.834 | 0 44 32.684 |+0 4[37.850]} . - | y Cassiop. . 7, 045 8.587 70. 174 to. 197 '— 0.945 — 0.520 0,099 7.145 | 0 49 44.999 (37-854]) -. - e Piscium eg 2 eae 18. 856 |—0. 269 |+-0. 327 |— 0.165 |— 0.261 = 9.095 18. 493 | © 56 56.277 37. 784 |— 0.001 | 9 Ceti. " 7 0 58 8.434 '—o. 288 --0. 365 — 0,011 — 0.264 40.010 8.246 I 2 46.009 : 37- 763 |-+ 0.020 | 1 («+ Pisctum . . | 7 1 © 40,550 -—0. 244 1-0. 314 — 0.377 — 0.298 |+0.010 | 39.955 | I 5 17. 678 | 37-723 |+ 0.060 | 8 Ceti. ow. 7 1 13 36.760 |—o. 286 jo. 388 |— 0.029 |-- 0.262 +0.020 ! 35.591 | 1 18 14. 347 ; 37.756 |-+ 0.027 | x Piscium 2 | 2 7 ¥ 26 20.677 0. 265 + 0. 361 |— 0. 202 ra it 204 '-7.039 20. 337 I 30 58. 123 37. 786 |— 0.003 1a Eridani 7 1 28 45.776 —9.371 |+0. 506 |-+ 0.667 | 0.485 +9.035 | 46.127 | £ 33 23. 884 (37- 757] vy Piscium . i @ ! I 30 47.260 —-o. 272 j+o. 370 |— 0. 145 - 0. 260 |. 035 | 46.938 | 1 35 24. 783 | 37-795 |— 0.012 tr Ceti... 2...) Wo 7! 1 34 3.926 0. 294 +-0. 398 |-+ 0. 040 \— 0.270 40.040! 3.840 1 38 41.624 j+-u 4 37.784 |— 0.001 atte . a NORMAL EQUATIONS. A a Assuming a’ == —o. 845+ da’ circle E. 0 == — 0. 643 + 2. 502 da’ — 0.041 de + 1.225 d¢ ) whence da’ = ~+- 0, 275 a’/ =—-0.5064- da’? W. —0. O11 + 4.446 da// — 0.946 de + 1. 616 d¢ | da/’ = + 0. O11 ¢ s=+0. 261 4 de ee + 0. 382 -- 0. 041 da’ — 0. 946 da’’ + 20. 682 dc — 2. 615 dt dc ==-—-0.022 c\T = -+ 08 4™ 378.820 +. d¢ +0.112 + 1.225 da’ + 1.616 dba// — 2.615 dc + 14. 020 0¢ ot —=— 0.037 a’ == — 08,570 (circle east); @/’ = — 08.495 (circle west); ¢ == 0%.239 (+ with circle E.). Chronometer No. 1295, at o8 49™.7 chron. time, o 4™ 378.783 + 08.019, slow; losing 0%.049 per hour. | ! Dec. ial g' Ceti. Es | 7: 2 2 11,607 I-f0. 268 0.149 |-— 0.333 + 0.254 —o, 016 a II. aa 2 6 52.404 +0 4 40.475 |— 0.095 | 67 Ceti. | | 7 2 6 32,030 i+0. 284 ‘Lo, 172 |— 0.085 |4 0.253 |—0.0 32.643 | 2 IL 12.953 40. 310 |-+ 0.070 | & Ceti. | 7 / 2 17 20. 029 te 269 |+o. 187 E 0. 326 |+ 0.254 | 0.000 | 20.413 | 222 0.871 | 40. 458 |— 0.078 v Arietis | 7 | 2 27 34. 896 [+0. 254 +0.175 |— 0.560 |+ 0.270 |+0.0 "35: 046 | 2 32 15. 394 | 40. 348 |-+ 0.032 é Ceti. 7 2 28 52.616 +0.277 -v.191 — 0.195 + 0.251 +u.011 6a, 151 2 33 33-520 40. 369 |-} 0.011 | 3 Persei. . | 7 2 31 39.324 |-+0.209 +0. 141 fies 1.250 |-+ 0.381 0.011 | 38. 816 2 36 19. 264 [40. 448] : Le Ceti . | 7 ‘2 33 56. 184 |-+0. 292 +0.195 + 0.039 + 0.259 |+0. 016 | 56.985 | 2 38 37.307 40. 322-|-+ 0.058 y Persel)s.2.% % | E 7 2 37 37.824 i-+0. Igl +0,123 |— 1.538 |4 0.442 a o16 3 37.058 | 2 42 17.298 |--0 4[40. 240] _ i Ra Ste sense ee Gore ieee sv Bore eee teeta CoN ei, pone eo 2 y NORMAL EQUATIONS. . Assuming = @ == 226 68 4- da j 0 = — 0. 085 + 2. 998 da + 3. 140 df oer da = + 6 as AAT = + 0? 4™ 408.393 + d¢ — 0.036 + 3.140 da + 7. 093 d¢ o¢ = — 0,017 q == — 0. 945 (circle east); ¢ == 0.271 (+ with circle E.). Chronometer No. 1295, at 2" 19.4 chron, time, o& 4™ 408.380 + 08.019; losing 08.053 per hour. IN MEXICO AND CENTRAL AND SOUTH AMERICA. Transits of stars observed at Lima, by Lieut. John A. Norris, with transit No. 1504; to determine the correction of sidereal chronometer Negus 1295. 67 Transit : Hee | ° sa ashae Seconds ‘ Date. Name of star. : = ae eee carlin Level. | Azimuth. ar Rate. | of corr. } R.A, ae | Oe VgQoiS | aay : transit. | = oS of pees mation. ! 014 (cite TO fee ee ee oe ee 1883. Aim. ». Dah , Ss | cy i o a ls sy | Ams, hem. 3 , Dec. 21) 8 Ceti. -. +) EL 7) © 33 4.253 ;+°. 297 |-—0. 095 |+- 0.078 |+- 0. 268 |—-0.038 | 4.763 | © 37 46.479 |+90 4 41.716 ,— 0,122 ¢ Andromede . . | 7 | © 36 30.951 |+0, 251 io. 094 |— 0. 415 |+ 0. 277 |--0. 032 | 30.938 | 0 41 12.414 41.476 + 0.118 6 Piscium . oa : 7 | © 37 58.910 jh 269 —0, 106 |\— 0. 214 |+ 0. 256 |—0.032 | 59.083 | 0 42 40.610 41. 527 > 0. 067 a Hydri . 7 © 39 47.493 |-+0. 506 [0.211 + 2.340 | 1.019 }—0. 027 | 51. 120 | 0 44 32.431 [41.311] e Piscium . 7 © 52 14.434 +0. 269 —0. 136 '— 0. 218 |-+. 0. 256 |—o0.016 | 14.589 ; 0 56 56. 244 41.655 — 0.061 n Ceti. 7 0 58 3.879 to. 288 —o. 148 — 0.014 \+ 0.259 |—0. 011 4. 253 I 2 45.961 41. 708 — oO. 114 + Pisctum ...) E. 7 | 1 0 36.171 ‘0. 244 Lo. 126 — 0. 497 |+ 0.292 |—o. 011 | 36.073 | 1 5§ 17.623 |4+0 4 41.550 i+ 0. 044, APE StH gn 8 a ees : W. 7 | I 13 33.239 :—o. 286 tes 074 |— 0.037 — 0.298] 0.000 | 32. 692 1 18 14.314 |+0 4 41.622 | 0, 028 7 ~Piscium 7} 1 20 36.816 |—0, 261 +0, 110 |— “0. 299 |-~ 0. 304 |+0. 005 | 36.067 | 1 25 17.720 41. 653 é 0. 059 a Piscium. . . . 7 1 26 17.260 —0. 265 4-0.147 |— 0. 262 \— 0. 300 |-+-0. 011 | 16.591 | 1 30 58.087 41. 496 as 0. 098 a Eridani .. | 7 | 1 28 41.946 —o. 371 pee 228 + 0.865 |— 0. 552 |+-0. 016 | 42. 132 i 1 33 23.792 [41. 660] |p Piscium . \ 7 | I 30 43. 694 0. 272 -++0.178 — 0. 188 |— 0.295 |+0. 016 | 43. 133 | I 35 24.747 | 41.614 .—- 0.020 lr Ceti a | jf I 34 0. 333 |? 294 |. 212 + 0.052 |— 0, 307 |-+0,022 , 0.018) 1 38 41.588 41.570 + 0.024 | & Ceti. ' 7 | 2 2 11.343 |—0. 268 -+-0. 209 |— 0. 226 |— 0. 297 |-+-0. 043 | 10. 804 | 2 6 82.396 41.592 |-4 0.002 67 Ceti. . 8) 7 | 2 6 31.771 —0. 284 '+-0. 220 — 0.058 |— 0. 296 |-4-0. 049 | 31. 402 2 II 12.943 41.541 (+ 0.053 we Hydri. . Ww. 7, 229 28.157 teaiey 609 Io. 496 + 3. 292 ie 1. 632 re 070 29. 783 . 234, 11.232 +0 4[41. 449] Da at temp Spee cre cegca dt Sagan EOI Cee tO, EM A 5, Mkt SS te , R eI Bet Aaa NORMAL EQUATIONS. Assuming =a” Big 766 + da’ circle E. O = — 0. 277 + 2.741 Ja’ + 0.436dc-+ 1.539 d¢ ) whence da’ = + o. 114 a/’ == — 0. 681 + da’? «OW, — 0. 105 + 3.096 da’/ + 1.324 dc-+ 0, 663 d¢ da// = + 0.039 ¢ =+o25+0c0 « EK, | — 0. 109 + 0. 436 da’ + 1. 324 da’/ + 19, 385 de— 1.515 de dc ==— 0.001 AT = -+ oF 4™ 418.616 + ¢ + 0.112 + 1.539 da’ + 0. 663 da’? — 1.515 dc + 13.624 d¢ J df = —0.023 a/ == — 08.652 (circle east); a/” = — 08,642 (circle west); ¢ == 0%.274 ( + with circle E.). Chronometer No. 1295, at 15 13™.2 chron. time, o8 4™ 41.594 + 08.014, slow; losing 08.053 per hour. Dec. 24} ¢ Piscium... ..| E.} 7] 0 52 10. 343 jo. 269 een — 0,267 |+ 0.273 —0.046 | 10. 562 0 56 56.210 +0 4 45.648 |-- 0.010 Wp, COWS. Ge - Orionis . 7} 459 8.420 |+0. 281 |+0.044 |— 0.086 |-+ 0.314 0.014 | 8.959 | 4 48 14.193 54.766 |\— 0.051 Ir Orionis . 6| § 8 52.686 |+0. 275 |+0.023 |— 0. 242 |+ 0.325 |—0. 003 | 53.064} 4 57 58.254 54.810 |— 0.007 e Leporis. ...| . 6] 5 Ir 28.615 |-Lo. 292 +0. 019 + 0.219 |-+ 0.340 |—0.001 | 29.484 | 5 0 34.578 54.906 |+. 0. 089 a Aurige. E.| 7] 5 19 4.700 |+0. 256 |—0. 004 |— 0.753 + 0.451 ;+0.008 | 4.658! 5 8 9.815 |—o 10[54. 843] ny Orionis . 6| § 29 35.667 |—o. 283 |-+-0. 237 |— 0.023 |— 0. 356 |+0. 020 | 35.262 | 5 18 40. 383 —v 10 54.879 |+ 0.062 6 Orionis . 7 | 5 37 1.813 |o. 282 |o. 246 |— 0.043 |— 0. 356 |+0.028 | 1.406] 5 26 6.606 54. 800 |— 0.017 a Leporis.... 7 | -5 38 33-653 |—0. 290 |+0. 255 | 0.121 |\— 0.374 |+0.029 | 33.394] 5 27 38.546 54.848 + 0.031 ¢! Orionis . 7 5 39 24. 243 |—0. 278 |+-0. 246 — 0.132 |— 0. 361 |+0.030 | 23.748 | 5 28 29.004 54.744 — 0.073 « Orionis . 7 5 40 42.466 |—o. 284 |+0. 252 |+ 0.008 |— 0. 358 |+0.032 | 42.116 | 5 29 47.274 54.842 |+ 0.025 « Orionis . 7 | 5 43 52.369 |—o. 283 |+0. 255 |— 0.022 |— 0. 356 |+-0.035 | 51.998 | 5 32 57.125 54. 873 |4+ 0.056 y Mense..... 3 | 5 47 26.229 |—o. 386 |-Lo. 357 |+ 2.095 |— 1.517 -+0. 039 26.817 | 5 36 32.115 [54. 702] 130 Tauri. . 2... 7 5 51 37.704 |—0. 274 |+0. 256 |-— 0. 211 |— 0.374 |+0. 044 | 37.145 5 40 42. 373 54.772 |— 0.045 6 Doradus....}/W.!| 7] 5 55 31.193 |—0. 337 |+0. 322 |4+ I. 103 |— 0. 868 |+0. 048 | 31. 461 5 44 36.654 |—o 10[54. 807] NORMAL EQUATIONS. Assuming Gh i pe tat circle E. [ o0=— 0.079 + I. 365 da’ + 1.797 6c+ 1.468 d¢ ) whence da’ ie, 024 a’? = —0,.512-+ da’ “« WW, — 0. 034 + 2.819 da’? + 2. 180 de — 0. 335 dt da// == — 0, 007 ¢ =+0.310+4 dc fe —o. 485 + 1.797 da’ + z. 180 da’’ + 18.140 dc — 0.977 Jt dec =+0.025 AT 2=—obF rom 548.818 + d¢ ( — 0.024 + 1. 468 da’ — 0. 335 ba’ — 0.977 Jc + 14. 016 dt 6¢ ==-+ 0,001 a’ = — 0°.675 (circle east); @/” = — 08.519 (circle west); ¢ = 0.335 (+ with circle E.). Chronometer No. 1295, at 55 11™.9 chron. time, oF 10™ 548.817 -+ 08.011, fast; losing 0*.066 per hour. IN MEXICO AND CENTRAL AND SOUTH AMERICA. \ of sidereal chronometer Negus 1295. 69 Transits of stars observed at the Central and South American Telegraph Station, Paita, by Lieut. John A. Norris, with transit No. 1504, to determine the correction a/ = — 0.816 (circle east); @/” = — 0*.337 (circle west); ¢— 0.8391 (+ with circle E.). Chronometer No. 1295, at 44 50™ chron, time, o! 10™ 468,016 + 08.015 fast, losing 08.058 per hour, Tg | it | | eee | Flexure | Aberra- Date. Name of star. i | 2 meinen coed an ay Level. | Azimuth. pig Rate. of cot. R.A. pone : uw Sgt of pivots. mation. panel Oh. | : : SE er ane eee eae ee ae ayotoiesey 1884. | him. Ss. | Se S S. 5. 5. Ss. hem, 3. him. 5. a Jan.26|u Ceti... E.. 7 ! 3 7 7-027 +0. 280 —0.007 — 0.073 |4+ 0.316 |—-0.040 | 7.503} 2 56 14.017 —O 10 53. 486 i+ 0. 006 et Persei ba 3 11 37.589 “h0. 254 —0.027 |— 0. 602 |+- 0. 483 |—0. 036 | 37.661 | 3 0 43.902 [53-759] 6 Arietis 7 3 15 54. 360 0. 273 0.047 — 0.211 + 0. 334 |~0.032 | 54.677 | 3 5 I. 101 53-576 L 0. 096 Lacaille, 1105 7° 3.22 19.614 +0.417 "—o0.097 |-- 2.537 [4+ 1.718 '—o0, 026 | 24.163 | 3 11 29.982 [54.181] « Hydri. . 7 3 29 41.750 Lo. 398 |\—o. lor |+ 2.186 + 1.493 |—0.020 | 45.706 | 3 18 51.711 [53- 995]: © Tauri 7; 3 31 47.124 +9. 278 j 70-071 — 0.122 |+ 0.319 —0.018 | 47.510 | 3 20 54.255 53-255 .— 0. 225 Ff Tauri : 7 | 3 35 22.431 0.276 —o.064 — 0.150 |+ 0.323 0.015 | 22.801 | 3 24 29. 363 53-438 i— 0.042 é Eridani ‘ | 7} 3 38 21.724 a 286 |—0, 061 + 0.041 |+ 0.320 |-0.012 | 22.298 | 3 27 29.011 53.287 — 0.193 Gr. 716 . | 7 3.43 2.814 j-+0. 233 |—0.036 — 0. 981 |+- 0.690 |—0.009 | 2.711 3 32 8.809 [53- 902] 6 Eridani EE. 7 | 3 48 35.424 yee 286 —o.015 |+ 0.043 |+ 0.320 —0. 004 36.054 3 37 42. 643 '—v 10 53.411 |— 0 069 9 H. Camelop. W.) 7 | 3 58 12.986 pe 237 |+0. 189 |— 0.592 |— 0.731 |+0.005 | 11.620 3 47 18.054 |—O I10[53.566]) . y Eridani 7) 4 3 32.184 0, 288 -Lo. 230 |-+ 0.050 — 0. 368 |+0. 009 | 31.817 | 3 52 38.278 53-539 + 0.059 A Tauri 71 4 5 10.741 Le 276 +0. 221 |— 0.096 — 0.365 0.010 | 10.235 | 3 54 16.716 53-519 i+ 0.039 vy Tauri : 7 | 4 7 54.570 = 279 |+0. 223 |— 0.059 |— 0. 359 |+0.013 | 54.109 | 3 57 0.574 53-535 |+ 0-055 o! Eridani 7| 417 7.453 —v. 285 +0. 238 + o.o1r — 0.360 |+0.021 | 7.078 | 4 6 13.523 53-555 |+ 0.075 y Tauri est | 7| 424 7.180 —9.275 +0. 239 = 0.115 — 0. 370 +0. 027 | 6.686 | 4 13 13.172 53-514 |+ 0.034 do Mensze | 7} 4 36 46.793 —o. 432 +0. 416 |+ 1.857 \— 2.161 |+0.038 | 46.511 | 4 25 52. 862 [53-649] vy Eridani . "| W.| 7 | «4 41 26.813 re 284 |+0. 286 — 0.008 i 0. 358 |+0.042 | 26.491 | 4 30 32.841 |—o 10 53.650 + 0.170 ! NORMAL EQUATIONS. Se Ss. Assuming a’ —=—o0.799 + da’ circle E. “[ o== — 1. 899 + 6. 324 da’ — 0.045 Je -+ 1.687 d¢ ) whence da’ = + 0.316 a// = —0. 324+ da © W. + 0. 025 + 3. 482 da’’ — 0.259 dc + 1. 088 d¢ L da/’ = + 0. 007 ¢ =-+0. 396 + de i EB: | + 1.480 — 0. 045 da’ — 0. 259 da’/’ +. 23.026 de + 1. 352 dt 6c =—0.060 AT =—ol rom 538.455-+ dz t + 0. 344 + 1. 687 da’ + 1.088 da/’ + 1. 352 dc + 13.535 dt J dt =—0.059 a’ = — 08.483 (circle east); @/” = — 08.317 (circle west); ¢ = 08.336 (++ with circle E.). Chronometer No. 1295, at 34 53™ chron, time, o8 10™ 538.480 + 08.023, fast; losing 08.052 per hour. ‘Feb, 1 9 H.Camelop. . | E.| 7} 3 58 4.636 |--o. 237 |+0.061 — 1.524 ug 0.758 |—0.050 | 4.118 | 3 47 17.855 |---o 10[46. 263] ; y Eridani . 7 | 4 3 23.477 |+0. 288 \—0.007 |+ 0. 128 + 0. 381 |—0. 044 | 24.223 | 3 52 38.190 46. 033 ep 0. O17 ‘ol Eridani ’ 7} 4 16 58.843 |-+-0. 285 |—0, 032 |+ 0.029 = 0. 373 |—0. 031 | 59.467 | 4 6 13.440 40.027 '-++ 0.011 * Tauri 7 | 4 23 58.767 j +0: 275 |—-0. 030 |— 0. 295 = 0. 384 |—0.024 | 59.077 | 4 13 13.092 45.985 — 0,031 ‘§ Tauri -7 | 4 27 2.016 FO. 274 |—0. 029 |— 0. 325 r 0. 387 |-0.022 | 2.301 | 4 16 16, 292 46. 009 me 0. 007 @ Taurh sn 7 | 440 3.116 +0. 274 |-0..029 |-— 0. 309 it 0. 386 |-0.010 | 3.428 | 4 29 17.515 45-913 r= O.10) “py Eridani. . 3 7 | 4 41 18.237 '10. 284 |-0.030 |— 0,021 (+ 0.371 |—0. 008 | 18.833] 4 30 32.762 46.071 +. 0.055 4 Camelop. E.| 7 | 449 9.650 ito. 244 |—0.025 |— I. 302 lt 0.671 |—0.001 | 9.237 | 4 38 23.385 |—o 10[45. 852] Le Camelop. . 7\ 4 53 23.003 0. 225 |+0.134 | 0. 789 | 1.019 |+0.003 | 21.107 | 4 42 34.956 |—o 10[46. 151] | #5 Orionis 7 | 459 0/566 —o. 281 |-+0.175 |— 0.043 — 0.412 |-+0.008 | 0.013 | 4 48 14.114 45.899 — 0.117 10 Camelop. . 71 5 3 56.704 peg 238 |-o. 154 |— 0. 618 =a. 831 j+0.013 | 55.184] 4 53 9.364 [45.820] | IE Orionis . 7/1 5 8 44.903 —o. 275 |0. 186 |— 0. 121 — 0. 427 |-+0.018 | 44.284 | 4 57 58.117 46.167 + O.151 8 Eridani . 7 | 5 12 56.870 —v. 284 |-+-0. 200 | 0. 001 (7 0. 414 |4-0.022 | 56.395 | 5 2 10.383 46. 012 c 0. 004 | A Eridani . 71 5 14 23.659 —o. 286 |0. 202 |+ 0.023 - 0. 417 |+0.023 | 23.204 | 5 3 37-245 45-959 \— 0.057 '¢ Orionis . ; 7 | 5 22 46.469 |—o, 285 |+0. 216 |-+ 0.011 — 0.415 |-+-0.031 | 46.027 | 5 12 0.020 46.007 — 0, 004 | 7 ~©Orionis . W.| 71 5 29 26.863 —o. 283 |+-0. 226 |- 0.015 |— 0.412 |+0.038 | 26.417 | § 18 40. 301 |—o Io 46, 116 [4 0. 100 | | NORMAL EQUATIONS. ig, a Assuming a’ =— 0, 809 + da’ circle E. Oo = — 0.013 + 2.990 da’ + 3.838 dc-+ 2.435 d¢ | whence da’ = — 0.007 a/’ = — 0.608 + da/7 “« W. —o. 758 + 3.025 da’? + 3.4420c-+ 1. 812 d¢ da// = + 0. 271 ¢ =+0.377-+ de “« &, + 0. 704 + 3. 838 da’ — 3. 442 da’” + 18. 940 de + 0. 244 ot dc =+0.014 AT = — 0? 1o™ 468.007 4- dé — 0.371 + 2.435 da’ + 1.812 da// + 0. 244 de + 13. 528 de otf =—o0.008 70 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at the Central and South American T elegraph Station, Paita, by Lieut. John A. Norris, with transit No. 1504, to determine the correction of sudereal chronometer Negus 1295. g 4 : : oS ry as es Seepade e Dales Maiie-aiston, o e Sagaiet Unease enaliy Deeded | cron er Rate. | of Sore R. A. one 2 a of pivots. mation. Means \O!14 1884. | | | him. 5s. S$ yo v i Ss S. he om. S$ h. me S$. , os Feb. 2 Gre 7t6: a a EB Pe 3.42 53. 817 |-+o. 233 |-+0.066 |— 1.221 |4+ 0.662 \—0.053 | 53.504 | 3 32 8.513 —0 10[44. 991] 6 Eridani : bd | 3 48 26.446 |-+-0. 286 |+0.095 |+ 0.054 |+ 0.307 |—0.047 | 27.141 | 3 37 42.521 | 44.620 .—~ 0. 073 9 H.Camelop.. . | 4 3.58 2.966 |4-0. 237 |-+0.090 |— 1.123 |+ 0.618 |—0.038 | 2.750] 3 47 17.821 [44. 929] y Eridani 7 4 3 21.991 |-+-0. 288 |4-v.116 |-+ 0.094 |+ 0.311 |-—0.034 | 22.766 | 3 52 38.175 44.591 — 0,102 4 Tauri... . 7) 4 § 0.849 |40.276 |+o. 112 |- 0. 182 |4 0, 309 |—0.032 | 1.332 | 3 54 16. 615 44.717 + 0. 024 vy Tauri 7, 4 7 44.531 j+0.279 |+0. 114 |— 0.112 |4+ 0. 304 |—0.029 | 45.087 | 3.57 0.478 | 44.609 .— 0,084 ot Eridani 7 | 4 16 57.367 |+0. 285 |Lo.114 |+ 0.022 |+ 0. 304 |—0. 021 58.071 | 4 6 13.425 44. 646 S 0. 047 yf PAY ss, hey ce a 7 4 23 57. 266 |--0. 275 |--0. ror |— 0. 218 + 0.313 |—0.014 | 57-723 | 4 13 13. 078 | 44. 645 pits 048 6 Menst. .../ EL} 7 | 4 36 31.821 |+0. 432 |+-0. 117 |+ 3.512 its 1. 828 |--0. 002 37.708 | 4 25 51.918 ~o 10[44. 790] 53 Eridani . . 7 | 4 43 38. 404 |--0. 288 |-Lo. 282 |+ 0.055 |— 0.355 |-+-0. 004 38.102 | 4 32 53.346 —O I0 44.756 oP 0. 063 Bw Eridani 7; 4 50 28.700 |—o. 284 |--o. 286 |— 0, 009 j—~ 0. 345 4-0. OT 28.359 | 4 39 43.560 44.799 ip 0. 106 mw Orionis 7 | 4 58 59.263 |—o. 281 |-+-0.290 — 0.042 — 0.344 |+0.018 | 58.904 | 4 48 14. 100 | 44. 804 | 0. 111 7 Mense. . . 7) § Q 18.300 |--0. 376 |-+0. gor +- 1.197 — 1.340 +0. 028 48.210) 4 58 33.415 [44- 795]) 8 Eridani a | 5 12 55.377 —0. 284 |-+0, 306 | 0.001 |— 0. 345 |-+-0. 031 | 55-086 | 5 2 10.370 44.716 + 0.023 a Eridani . 7) § 14 22.169 |—o. 286 |+-0. 311 i-+ 0.022 |-— 0. 348 |-++-0.033 | 21.901 | 5 3 37.230 | 44.671 \— 0,022 8 Orionis 7 5 19 44.329 \—90. 286 0.315 +} 0.019 — 0. 348 |4-:0.038 | 44.067 | 5 8 59. 345 | 44. 722 ae 0. 029 » Orionis < 7 § 22 44.981 nee 285 |-+0. 317 + 0.011 |— 0. 346 |-Lvu. 041 44.719 |. 5 12 0,006 44.713 He 0, 020 | 17 Camelop.. . . a 7 | 5 30 2.617 eS 233 |--0. 264 — 0. 668 S 0.757 |+0. 048 1.271 | 5 19 16.519 0 Mola 7521), . 286 “0. 202 |-+ 0.018 |— 0. 367 |+0. 009 20.522 § 3 37.215 | 43-307 |-+ 0. 002 | 7 Orionis 7: 5 29 24.070 |—9. 283 |-+0. 172 |— 0,012 |— 0, 363 |-+0.024 | 23. 608 | 5 18 40. 274 43. 334 |+ 0.029 | 6 Orionis .. 7 | 5 36 50. 305 —v. 282 -+-v. 158 |_— 0.022 |— 0. 363 j-+0. 033 | 49. 830 : 5 26 6.516 43- 314 |+ 0. 009 _ 9 Orionis | 7) 5 40 19. g6r j—9. 284 |+-0. 153 |+ 0.002 | — 0. 365 |-+0. 036 | 19.503; 5 29 36. 200 | 43. 303 |— 0. 002 ; o Orionis eae S ae 5 43 40. 803 |—0o. 283 |-+0. 145 |— 0.011 |—- 0. 363 |+0.040 | 40. 330 5 32 57-023 _ 43. 308 |+- 0. 003 : so MRR es : w. | 7 5 47 15.357 |—0. 386 ito. 190 |+ 1.078 |— 1.547 |+0. 043 | 14. 732 | 5 36 31.414 |—o 10[43. 318] NORMAL EQUATIONS. Assuming @/” = a 707 + da’ circle E. [ 0==—0. 398 + 2, 408 da’ » + 3.848 de-+ 2.932 dt] whence da? = + - 171 al! =~ 0.257 + dal? OW. | — 0. 009 + 1,238 da’4 + 1,189 dc — 0, 212 d¢ ' da’// = — 0. O10 ¢ == +o. 328 4- de ce OE, — 0, 842 + 3.848 da’ + 1.189 da’/ 4- 15. §29 dc 4- 0. 596 df dc =+0.014 AT = —0l rom 438,283 -- 04, l — 0, 235 + 2,932 da’ — 0. 212 da@/4 + 0.596 de + 12, 241 Jt | df = — 9,023 a’ == — 08,536 (circle east); @’” == — 0°,267 (circle west); ¢ = 0%.342 (-+ with circle E.), Chronometer No, 1295, at 5" 5",8 chyon, time, o® 10" 43%.305 +: 0°,007, fast; losing 0°,063 per hour, Transits of stars observed at the IN MEXICO AND OENTRAL AND SOUTH AMERICA. 71 Central and South American Telegraph Station, Paita, by Lieut. John A. Norris, with transit No. 1504, to determine the correction of sidereal chronometer Negus 1295. lg 5 fa ; Flexure Aberra- Seeois ; Date. Name of star. eS Transit One - and Level. | Azimuth.) 40? ant Rate. | of corr. R.A Chnanorries v. gy, & Mean of threads, equality colli- et correction. = + f nivots: tion transit. Sos of piv mal a Oe 1884. | hom. s. Se S. i & Si Ss) him. Ss. him. S$ S. Feb. fof “Taurt sc a as -EL) 7 3 35 10.523 |+0.276 —o.o11 |~ 0.120 |+ 0. 349 |—0. 078 | 10.939 | 3 24 29.222 |—o 10 41.717 |+ 0.157 .€ Eridani . 7 3.38 9.771 |+0. 286 —o.o11 |-+ 0.032 |-+ 0. 346 |—0.074 | 10.350 | 3 27 28.864] * 41.486 |— 0.074 y Hydri.. 7 3.59 41.186 |+o. 373 0, 016 -+- 1.362 |+ 1.284 |—0. 044 | 44.145 | 3 49 2.628 [41.517] ‘ y Eridani.... 7 4 3 18.979 |4-0. 288 —o.o14 |+ 0.061 |+ 0, 351 |—0.038 | 19.627 | 3 52 38.143 41.484 |— 0.076 A, “Daint nee a 4 7' 4 4 57.753 |-+-0.276 —o.014 |— 0.117 |+ 0. 349 |—0. 037 | 58.210 | 3 54 16.583 41.627 |+ 0.067 v Tauri. . ' 7° 4 7 41.456 |+0.279 ‘—o0.015 |— 0.072 |4+- 0. 343 |—0.032 | 41.959 | 3.57 0.449 41.510 |— 0,050 ol Eridani | 1 7 4 16 54.286 |+0. 285 --o.021 |+ 0.014 |+ 0.344 |—0.020 | 54.888 | 4 6 13.395 41.493 |— 0.067 d6 Mense. . E. 7 4 36 28.800 |+0. 432 Io. o61 |+ 2.262 |4 2.064 |+v. 008 | 33.505 | 4 25 51.639 |—o I0[41. 866] . # Eridani ANE i | 4 50 25.627 |—0. 284 +0. 146 |— 0.008 |— 0. 384 |+-0.028 | 25.125 | 4 39 43-532 | 9 10 41.593 [+ 0.033 a Camelop. -. : 7 4 53 18.347 |—0. 225 '-b0. 121 |-- 0.703 |— 0.947 |+0.032 | 16.625 | 4 42 34.842 [41.783]} . . wt Orionis 9 ' 455 45.277 |—0. 279 +o. 155 |— 0.055 |— 0. 385 |-+0.036 | 44.749 | 4 45 3.196 41.553 |— 0.007 m* Orionis 7 4 58 56. 140 |—o. 281 pre 162 |— 0.038 |— 0. 383 |-+0.040 | 55.640 | 4 48 14.073 41.567 |+ 0.007 10 Camelop. . : 7) 5 3 52.000 |—o. 238 nee 146 |— 0.550 |— 0.773 |-+0.048 | 50.633 | 4 53 9.278 [41.355] 11 Orionis . ! ui | 5 8 40. 239 |—v.275 +0.177 |— 0.108 |— 0. 397 |+0.054 | 39.690 | 4 57 58.139 41.551 |— 0.009 'B8 Eridani . .: 7 | § 12 52.334 |—o. 284 |+0.193 |+ 0.001 |— 0.385 |+0.060 | 51.919 | 5 2 10.342 41.577 |+ 0.017 'A Eridani ... me 7 | 5 14 19.156 |—o. 286 Fo. 197 |-+ 0,020 |— o. 388 pre 062 | 18.761 | 5 3 37.204 —O Io 41.557 a 0. 003 | < NORMAL EQUATIONS. 3 Assuming a’ =—0o.724-+ da’ circle E. O= — 1.192 4+ 3.754 da’ — 3.137 dc— 0.259 d¢ | whence Ja’ = + 0. 338 a’/ = —0.274+ dave «OW. + 0. 199 + 3.056 da’’ — 3.732 dc +. 2.011 d¢ | da// = — 0. 026 =+o. 3364+ dc e E, + 0. 460 — 3. 137 Sa’ — 3. 732 ba’’ + 19. 511 dc — 0.624 d¢ | dc =+ 0.026 AT =—o® tom 418.547 + d¢ + 0. 317 —0. 259 da’ + 2. O11 da’/ — 0. 624 de + 12. 863 dz J if =—0.012 a’ == — 08.386 (circle east); a@/” == — 08.300 (circle west); ¢ == 0%.362 (+ with circle E.). Chronometer No. 1295, at 44 30.6 chron. time, oF 10™ 418,560 + 08.013, fast; losing 08.085 per hour. Transits of stars observed at the Central and South American Telegraph Station, Paita, by Lieut. John A. Norris, with transit No. 1504, to determine the correction of sidereal chronometer Negus 1684. \ Assuming a’ 5. == — 0.421 + da’ circle W. « E. a! = — 0. 754 + Sa’/ = + o. 388 + de = — 54 35™ 268,165 + de. c AT 1 é | | | ¢ | (od Flexure | D NV f | a | Transit over | andin- 7 oo ey nao ae 3 | ‘g mean of threads.) equality Sig, of pivots. PRED, 4S Pete é . 183°. | ! hm... Ss. "5, Feb. 4 7 Orionis . | Wale | 10 47 26. 660 |—o. 285 |+0. 183 » ~Orionis . | | 7 | 10 54 6.976 |—o. 283 0 181 B Leporis....j . | 7 | 10 58 44.644 |—0. 291 |--0. 186 | 6 Orionis , 7, IE ¥ 33-154 |—0. 282 +0. 179 | ¢ Orionis ’ ie | Il 5 13.857 —o. 284 +0. 181 | y Mens. «Lene | II 11 57.714 —0. 386 +0. 246 6 Doradus.. . Ws 7 | 11 20 2.464 '--0. 337 +0. 214 | 66 Orionis . |E.| 7 "IT 34 18.153 +0. 280 —0, 033 /v Orionis . |. | 7. If 36 24.689 |+-0. 275 |—0. 034 , 22 Camelop. oh 4 7 11 41 35.179 |+0.215 —0. 030 8 Monocerotis . . i 9 | II 53 4.893 |-+0. 280 :—0, 051 10 Monocerotis ‘ log | II 57 41.391 bres 284 Le. 056 8 Lyncis... . | ; | 7 | 12 2 35.543 '4+-0. 235 -—-0. 051 y Geminorum ‘ 2 E.| 7 | 12 6 28.589 ‘+-0.274 —-0. 064 L 4- I. O28 OO IN OO 4 Azimuth, o16 . O21 . 138 039 . 008 +917 2 o10 127 280 175 135 006 535 306 NORMAL EQUATIONS. 0 = + 0, 080 + 2. 619 Ja’ + 9. 038 | Gon and Rate, |ofeon. RA, Chronometer |, colli- fansite. correction. mation. | ve Ss. Ss. | Ame 8. hem. 5. Ss. — 0.434 |+0.029 | 26. 169 | 5 11 59.978 |—5§ 35 26.191 |+ 0.029 — 0.431 |+0.024 | 6.446 | 5 18 40. 265 26.181 |+ 0.019 — 0.461 |-+0.020 | 44.236 | 5 23 18.043 26.193 |+ 0.031 — 0.431 |+0.018 | 32.599 | 5 26 6.504 26.095 |— 0.067 — 0.433 |+0. 014 | 13.343 | 5 20 47.175 26. 168 | 0. 006 + 1.837 |+0.009 | 57.663 | 5 36 31.328 [26. 335] — 1.051 |40.003 | 2.303! 5 44 36. 249 |—5 35[26.054] -++ 0.390 |—o. 009 | 18, 654 5 58 52.497 |—5 35 26.157 |— 0.005 + 0. 402 |—0.010 , 25.042; 6 0 58.931 26. 111 |— 0.051 1, 104 |—0. 014 | 34.279 | 6 6 8,082 [26. 197] + 0.390 |—0.024 | 5.353 | 6 17 39.218 26.135 |— 0.027 + 0. 390 |--0.027 | 41.976 | 6 22 15.754 26, 222 |+ 0.060 + 0.817 |—0.031 | 34.978 | 6 27 8.819 [26. 159] + 0. 406 |—-0. 034 |} 28.865 | 6 31 2.700 \—5 35 26.165 |+- 0.003 S. -+ 3.005 de — 1,128 0¢ ) whence da’ = — 0. 054 + 3.349 da’’ + 4.312 0c + 2. 389 dz | da’ == — 0, 042 — 0,022 + 3.005 da’ + 4. 312 da/’ 4. 16, 828 Je + 0, 383 d¢ de =+ 0.022 dt == + 0.005 — 0.017 — 1. 128 da’ + 2. 389 da/’ + 0. 383 de + 10. 953 Ne a’ == — 0%.475 (circle west); @// = — 0%.796 (circle east); ¢ —0%.410 (+ with circle E.). Chronometer No. 1684, at 115 23™,5 chron. time, 5" 35™ 26%.162 + 0*.008, fast; gaining 0%.048 per hour, arts 72 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at the Central and South American Telegraph Station, Panama, by Lieut. John A. Norris, with transit No. 1504, to determine the correction of sidereal chronometer Negus 1295. 2 : vo ; Flexure , Aberra- Seconds Date. | Name ofstar. |, | |, Ttemstover | and in, | revel, | azimuth./ HORA | Rate, | ofcome. | R.A. | Cmmoneter | Bsa of pivots. mation. teeth 5 | 2 | 1884. hom. Ss. a ry a. Ss. s Ss him. . S. hem. 5 Mar. 3] 6 Orionis .. .| E.|] 7 5 29 43.870 -+0. 279 |—0. 109 |+ 0.091 |+ 0. 285 |—0.035 | 44.381 | 5 26 6.065 |—o 3 38.316 — 0.082 ¢' Orionis .”. 7 | 5 32 6.450 j+-0. 287 |—o. 114 |— 0.005 |-+ 0. 289 | -0.032 | 6.875 | 5 28 28. 466 38. 409 |+ 0.011 w Orionis . . . . 7} 5§ 33 13.566 |+0.275 |v. 110 |4+ 0. 140 |+ 0, 286 |—o0, 031 | 14.126 | 5 29 35.751 38. 375 |— 0.023 ® Orionis . . 7 | 5 33 20.079 Lo. 275 |—o. 110 |+ 0. 140 |+ 0. 286 '|—o. 031 | 20.639 | 5 29 42.310 38. 329 |— 0.069 o Orionis .. 71 5 36 34.436 |+0.277 |\—o. 115 |-+ 0,113 | 0.285 |—0.028 | 34.968 | 5 32 56.583 38. 385 |- - 0.013 130 Tauri i 7 | 5 44 19.910 to. 293 |—0. 129 |— 0.090 |-++- 0.299 |—0.020 | 20.263 | 5 40 41. 846 38. 417 |+ 0.019 6 Doradus....] . 7 | § 48 11.400 '+0. 181 |—o, 082 | 1.316 |-+ 0.695 |—0.017 | 13.493 | 5 44 34. 815 [38. 678] 36 Camelop. . . .| E.| 7! 6 4 52.550 ‘4-0. 378 |—o. 191 |[— 1.141 |+ 0.694] 0.000 | 52.290! 6 1 13.657 |—o 3[38. 633] 22 Camelop. H.. . 7) © 9 47.757 ‘0, 396 |-o. 102 |— 1.057 — 0.928 |-+-0.005 | 45.483 | 6 6 6.862 |—o 3[38.621]| . y# Geminorum 7 | 6 19 37.383 ag 298 |--0.077 |-— 0. 109 |— 0. 354 |+0.015 | 36.714 | 6 15 58.300 38. 414 |-+ 0. 016 10 Monocerotis . . 7 | 6 25 54.240 io, 276 |+0.071 |+ 0. 102 |— 0. 328 |-+-0. 021 | 53.830 | 6 22 15. 384 38. 446 |+ 0.048 23 H.Camelop.. . 7 | 6 30 13.600 |—o. 522 |+0.135 |— 2.262 |— 1.827 |10.025 | 9.149 | 6 26 31.031 [38. 118] y Geminorum 7 | 6 34 41.367 |—0. 293 |-+0.075 |— 0.059 |— 0.341 |-++0.030 | 40.779 | 6 31 2.352 38. 427 | 0.029 15 Monocerotis . . 7 | 6 38 16/011 eg: 287 |+0.074 |— 0.008 |— 0. 332 |+0.034 | 15.492 | 6 34 37.052 38. 440 |-+ 0.042 & Geminorum 7 | 6 42 27.403 —o. 290 |+0.075 |— 0.031 |— 0. 336 |+0.038 | 26.859 | 6 38 48.422 38. 437 |+ 0.039 18 Monocerotis . .| W.| 7 | 6 45 29. 216 0. 282 |+0. 073 + 0.048 |— 0. 327 |-+0. 041 | 28.769 | 6 41 50.385 |—o 3 38. 384 |— 0.014 | NORMAL EQUATIONS. Assuming a7 = + 0.556 -+ da’ circle E. ( 0=—0.004 + 3.005 da’ + 0,906 de -+ 0.783 df |} whence da’ een a’/== + 0,502-+ da’? « W. + 0.195 ++ 3.032 da’’ + 3.563 dc — 1.010 dt da// = — 0.073 ¢ =+ 0.303 4+ de feo -- 0.199 -+- 0.906 6a’ -++- 3.563 da’’ 4- 19.673 dc -|- 0.330 dt dc =+ 0,003 AT =— ob 3™ 388.397 + de. L + 0.118 + 0.783 da’ — 1.010 da// + 0.330 dc + 12.861 dt df ==—0.015 a/ == + 08.560 (circle east); a/” = + 08.429 (circle west); ¢ == 08.306 (-+ with circle E.). Chronometer No. 1295, at 64 4™.6 chron. time, 04 3™ 38%.398 + 08.008, fast; losing 08.060 per hour. Mar. 9 |130 Tauri. . . . . E.| 71] § 44 11.369 |+-0. 293 |+0.004 |— 0.078 |+ 0. 376 |—0.046 | 11.918 | 5 40 41.761 ‘—o 3 30.157 |+ 0. 058 6 Doradus . 7) 5 48 2.850 |+0. 181 |+-0.001 |+ 1.152 |+ 0.873 |—0.042 | 5.015 | 5 44 34.468 [30. 547] a Orionis . 7 | .§ 52 24.254 |+0. 285 |—0. 004 |+ 0.013 |+ 0. 361 |—0.038 | 24.871 | § 48 54.818 | 30. 053 |— v. 046 66 Orionis . . 7 | 6 2 21.413 |-+0. 283 |—o. 038 |-++- 0.041 |+ 0.359 |—0. 029 | 22.029 | § 58 52.023 30. 006 |— 0.093 vy -Orionis . . 7 | 6 4 27.963 |-+o. 291 }—0. 048 |— 0.051 |4- 0. 370 |—0. 027 | 28.498 | 6 0 58.429 ; 30. 069 |— 0. 030 7 Geminorum 7 | 6 11 23.707 |-L0. 298 |—o. 069 |— 0. 124 |+ 0. 388 |—0. 020 | 24.180 | 6 7 54.129 | 30.051 |— 0.048 8 Monocerotis 7 | 6 21 8.073 |+0. 283 |—0.058 |+ 0.037 |+ 0.359 |—0o.011 | 8.683 | 6 17 38.740 29. 943 |-— 0. 156 10 Monocerotis . . 7 | 6 28 44.593 |+0. 276 |—0.039 |+ 0.116 -+ 0.359 |—0.007 | 45.298 | 6 22 15. 281 | 30. 017 |— 0. 082 23 H.Camelop. .| E., 7! 6 30 1.436 |+0.522 |—0. 033 |— 2.584 + 2.000 |—0.003/ 1.338 | 6 26 30. 387 0 3[30.951]| y Geminorum .|W.1 7 | 6 34 32.930 |—0. 293 |-+0. 231 |— 0.047 |— 0.417 |+-0. OO! | 32. 405 | 6 31 2.248 0 3 30.157 |+ 0.058 15 Monocerotis . . 7 6 38 7.556 |\—o. 287 |+-0, 226 |— 0.006 |— 0. 406 |+0,004 | 7.087 1 6 34 36.950 | 30. 137 |+- 0.038 € Geminorum 7 | 6 42 18.983 |—o. 289 |+0. 228 — 0.025 -- 0.410 |-+-0.008 | 18.495 | 6 38 48. 320 © 30.175 |+ 0.076 24 H. Camelop.. . 7 | 6 46 45.964 |—0. 473 |+0. 374 |— 1.429 |— 1.795 |+u.013 | 42.654 | 6 43 12.728 | [29.926]) . & Canis Major... . 7 | 6 52 19.970 |—0. 270 |+0. 215 |+ 0.125 |— 0.409 |-+-0.018 | 19.649 | 6 48 49. 521 | 30. 128 |-+ 0.029 y Canis Major.. . 7 7 2 2.576 |—o. 267 |+0. 213 |4+ 0.147 — 0.415 |+0. 027 2. 281 6 58 32.141 | 30. 140 |+ 0. 041 25 Monocerotis 7 7 35 2.900 |—o. 276 |+0. 214 |+ 0.076 |\— 0.401 |-+0.058 | 2.571 7 31 32.307 | 30. 264 |+ 0. 165 a Canis Minor.. . 7 | 7 36 46.003 |—o. 284 |-+-0. 220 | 0.021 |— 0.402 |-+0.060 | 45.618 | 7 33 15.535 ' 30. 083 — 0.016 ¢ Volantis. . . .| W.] 7 | 7 46 47-300 —o. 142 |-0. 102 |+ 1.116 — 1. 318 |-++-0. 069 | 47.127. 7 43 17.234 _—o 3[29. 893] i | NORMAL EQUATIONS. Assuming =a’ ae eae + da’ circle E. ( 0o==-+ 0.703 + 3.514 da’ — 0.335 dc+ 0, 248 d¢ } whence da’ an ds a’? =+0.371-+ 6a « Wz } + 0. 088 + 3.838 da’/’— 0.870dc + 0.994 dt | 6a// = — 0. 028 ¢ =+0. 409 + de ao a | + 0.575 — 0. 335 da’—- 0. 870 da’’-+ 22.120 5c + 0. 102 dt 6c ==—0.030 AT =— 0? 3™ 308.099 + 02 L + 0. 203 + 0. 248 Ja’+ 0.994 da’’+ 0. 102 de + 14. 615 dt J dt =— 0.008 a/ = + 08.490 (circle east); a/” = + 0°.343 (circle west) ; c= 08.379 (+ with circle E.). Chronometer No. 1295, at 6" 33™.1 chron, time, 08 3™ 30%.099 + 0%.a15, fast; losing 0°.056 per hour, ~- IN MEXICO AND CENTRAL AND SOUTH AMERICA. 73 Transits of stars observed at the Central and South American Telegraph Station, Panama, by Lieut. John A. Norris, with transit No. r 504, to determine the corr ection of sidereal chronometer Negus 1295. uw 3 z Flexure Aberra- Seeands col 1 = . te ; a ransit over | and in- : tion and 5 Chronometer Date Name of star. | =. {mean of threads.| equality Level. | Azimuth. colli- Rate. | of corr. R.A. Gaeechion: vw 3 Z of pivots. mation. Sensi, O14 1884. hem. 5. o 5. * 5. 5: S. ifs hm 3 A. mt. 9. » Mar.13; « Orionis . . E.| 7] 5 45 39.823 |+0.272 |—-0. 063 |-+ 0.210 |+ 0.324 |—0.059 | 40.507 | 5 42 16.333 —o 3 24.174 |+ 0.145 a@ Orionis . . 7 | 5 52 18.306 |+0. 285 |—~0, 062 |+ 0.017 |+ 0.322 |~0.052 | 18.816 | 5 48 54.746 24.070 |+- 0.041 66 Orionis . 7 | 6 2 15.390 |+0. 283 |—0.056 |4+ 0.054 |+ 0.320 |—~0. 041 | 15.950 | 5 58 51.929 24.021 |— 0.008 22 Camelop. H 7| 6 9g 31.007 |+0. 396 |—o0. 078 |— 1.590 |+ 0.905 |—0. 033 | 30.607} 6 6 6.312 [24. 295] 7 Geminorum 7| 6 11 17.636 |+0. 298 |—0. 059 |— 0. 164 |+ 0. 345 |—0.031 | 18.025 | 6 7 54.049 23.976 |— 0.053 # Geminorum.. . 7 | 6 19 21.657 |-+0. 298 |—0, 063 |— 0.164 |4+ 0.345 |—0. 022 | 22.051 | 6 15 58.111 23.940 |— 0. 089 8 Monocerotis . 7; 6 21 2.036 |-+0, 283 |—0. 062 |-+ 0.048 |4+ 0.320 |—o.020 | 2.605 | 6 17 38.671 23.934 |— 0.095 a@ Argus... . 7 | 6 24 46.214 |+0. 222 |~0. 053 |+ 0.934 |-+ 0.526 |—0. 016 | 47.827 | 6 21 23.675 [24. 152] 10 Monocerotis . .| E.| 7 | 6 25 38.497 |10.276 |—0. 067 |+ 0.153 |-+ 0.320 |—0. 015 | 39.164 | 6 22 15.207 |—o 3 23.957 |— 0.072 y Geminorum 7 | 6 34 26.751 |—o. 293 |+0. 215 |— 0.056 |— 0. 377 |—0. 005 | 26.235 | 6 31 2.173 |—o 3 24.062 |+ 0.033 15 Monocerotis . . 7 | 6 38 1.440 |—0. 287 |+0. 199 |— 0.007 |— 0. 366 |—o.001 | 0.978 | 6 34 36.879 24.099 |+ 0.070 € Geminorum 7 | 6 42 12.791 |—o. 289 |+-0. 188 |— 0.030 |— 0. 370 |+-0. 003 | 12.293 | 6 38 48.249 24.044 |+ 0.015 18 Monocerotis . . 7| 6 45 14.697 |—0. 282 |+0.173 |4 0.046 |— 0.361 |+0.007 | 14.280 | 6 41 50. 221 24.059 |-+ 0.030 % Canis Majoris. 7 | 6 §2 13.827 |—o. 270 |+v. 146 |-+ 0.149 |— 0. 369 |+0.015 | 13.498 | 6 48 49. 446 24.052 |-+ 0.023 3 Ursz Majoris,H. 7 | 8 4 44.836 |—o. 393 +0. 224 |— 0.979 |-- 0.999 |-++0.095 | 42.784 | 8 1 19.066 [23. 718] Br. 1147. 7) 8 8 28. 700 |—0. 457 |+-0. 281 |— 1.571 |\— 1.504 |+0.099 | 25.548 | 8 5 1.140 [24. 408] B Cancri.. ...]. 7 | 8 13 39.667 |—o. 287 |+v. 193 |— 0.004 |— 0. 366 |+0. 104 | 39.307 | 8 10 15. 341 23.966 |— 0.063 30 Monocerotis :© | W.; 7 | 8 23 18.009 |—0, 277 |--o. 215 |+ 0. 088 |-- 0. 362 |+0.116 | 17.789 | 8 19 53.740 |—0 3 24.049 |+ 0.020 5 NORMAL EQUATIONS. F Assuming a’ =-+ 0.6144 da’ circle E. ( o=—0.076 + 2.556 da’ — 0,058 de-+ 0.473 df ) whence da’ = -+ 0.031 a//—+0.366-+ da’? “« W. — 0.129 + 2.950 Sa’ + 2.591 dc — 0.432 dé da// = + 0.043 ¢ =+ 0.341 -+ dc ace es — 0. 084 — 0. 058 da’ + 2. 591 da/’ + 21.293 dc-+- 0.504 dt 6¢ =—0.001 AT =— 0b 3™ 248.027 + dt L + 0. 140 + 0. 473 da’ — 0, 432 da// + 0.594 dc + 15. 063 dt df ==-—- 0.009 a/ = -+ 08.645 (circle east); a/’ = + 08.409 (circle west); ¢ == 08.340 (+ with circle E.). Chronometer No. 1295, at 64 39™ chron. time, oF 3™ 248,029 + 08.012, fast; losing 08.067 per hour. Mar.14/ 0 Orionis .. . E.| 7 | 5 36 18.281 |+0. 277 |—0.097 |+ 0.142 |+ 0.351 |—0.041 | 18.913 | 5 32 56.378 |-o0 3 22.535 |+ 0.055 x Orionis... 7 5 45 38.044 |+0. 272 |—0. 086 |+ 0, 229 |+- 0. 356 |—0. 031 | 38.784 | 5 42 16.314 22.470 |— 0.010 a Orionis . 71 5 52 16.559 |+0. 285 |—o. 081 | 0.019 | 0. 354 |—0.024 | 17.112 | 5 48 54.729 22. 383 |— 0.097 yn lLeporis.... 7 | § 54 29.943 |+0. 268 |—o0.071 |+ 0. 286 |+ 0. 362 |—0. 022 | 30.766 | 5 51 8.312 22.454 |— 0.026 66 Orionis ... . 7 | 6 2 13.743 |+-0. 283 j—0.058 |+ 0.059 |+ 0.352 |—0.014 | 14.365 | 5 58 51.906 22.459 |— 0.021 36 Camelop. 7| 6 4 35.829 |-+0. 377 |—0. 069 — 1.436 |4 0.854 |—o. O11 | 35.544 | 6 1 13.142 [22. 402] 22 Camelop.H . 2 7} 6 9g 29.236 |+0. 396 |—0. 050 ./— 1.738 |+- 0.996 |—0. 006 | 28.834 | 6 6 6.256 [22.578]| .. # Geminorum . E. 6 19 20.031 |+0. 298 | 0.000 |— 0.179 |+ 0. 380 |+0. 004 | 20.534 | 6 15 58.092 |—o 3 22.442 |— 0.038 8 Monocerotis . W.| 7 | 6 21 1.574 |—0. 283 |+0. 150 |-+ 0.039 |— 0. 394 |-+0. 006 | 1.092 | 6 17 38.654 |—o 3 22.438 |— 0. 042 a Argus. .... 7 | 6 24 45.950 |—o. 222 |+0. 115 |+ 0.744 |— 0. 648 |+-0. 009 | 45.948 | 6 21 23. 639 [22.309]] .. 10 Monocerotis . 7'| 6 25 38.043 |—O0. 276 |+0. 142 |+ 0.122 |— 0. 394 |+0. 011 | 37.648 | 6 22 15. 188 22. 460 |— 0.020 y Geminorum . 7 | 6 34 25.269 |—o. 293 |+0. 145 |— 0.070 |— 0. 410 |-+-0. 019 | 24.660 | 6 31 2.154 22. 506 |+ 0.026 15 Monocerotis . 7 | 6 37 59.917 |—0. 287 |+0. 140 |— 0.009 |-- 0. 399 |+0. 023 | 59.385 | 6 34 36. 861 22.524 |-+ 0.044 € Geminorum . 7 | 6 42 11.317 |—o. 289 |+0. 138 |— 0.038 |— 0. 403 |+-0. 028 | 10.753 | 6 38 48. 231 22.522 |4+ 0.042 24 H. Camelop. eal a 7 | 6 46 38.550 |—0. 473 |+0.219 |— 2.141 |— 1.764 |+-0. 032 | 34.423 | 6 43 12. 224 [22.199]} . . % CanisMajoris. .| W.| 7 | 6 52 12.320 |—0. 270 |40.123 |4 0, 187 |— 0. 402 |-+0. 038 | 11.996 | 6 48 49.427 |—o 3 22.569 |-++ 0.089 NORMAL EQUATIONS. 3 a . Assuming a/ =-+0.744-+4 da’ circle E. [ o=-+ 0.109 + 2.704 da’ — 2.194d¢— 0.347 dt | whence da’ == — 0. 039 a// = -+.0.402-+ da’? « W. — 0. 341 + 3.011 da// + 0,062 de-+ 0.827 dt 6a// = +0, 1126 ¢ =+0.3724+ dé «“ — 0. 100 — 2. 194 da’ ++ 0. 062 da’/’ + 19. 403 dc-+ 0, 041 dt 6¢ = 0,000: AT =— 0b 3™ 228,478 + of L — 0. 199 — 0. 347 da’ + 0. 827 da’/’ + 0.041 dc + 13. 144 dt dt =+ 0,007 a/ = + 04,705 (circle east); 2/7 = + 08.514 (circle west); ¢ = 08.372 (+ with circle E.). Chronometer No. 1295, at 64 15™.3 chron. time, o4 3™ 228.480 + 08.010, fast; losing 0%.063 per hour, 11959 p t——10 14 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at the Central and South American Telegraph Station, Panama, by Lieut. John A. Norris, with transit No. 1504, to determine the correction of sidereal chronometer Negus 1295. wn oO 8 Flexure Aberra- Date.| Name of star, | | 8 |,Zeanstowes | andi | evel | Avimuth,| "oNA™4 | ate, [ofeor. | R.A, | Chomometer | 2 S of pivots. ‘| mation. . O14 1884. he mS. 35 iS = s Ss. Ss. him 5S. a 5. Mar. 22/ # Geminorum ..| E.| 7] 6 19 9.421 +0. 298 |--0, 042 |— 0, 109 |-+ 0. 288 |—0,027 | 9.913 | 6 15 57.932 |—O 3 11. 981 |+ 0.057 8 Monocerotis . . 7 | 6 20 49.774 |-o. 283 |-+o. o41 |-+ 0.032 [+ 0.267 |—0.026 | 50.371 | 6 17 38.504 11. 867 |— 0.057 a Argus.... 7 | 6 24 33 971 |+0. 222 |+0. 034 |-+ 0.620 |+ 0.438 |—0. 022 | 35.263 | 6 21 23.344 [r1.919]) .. 10 Monocerotis . . 7 | 6 25 26. 263 |+0. 276 |+0.044 |+ 0.101 |-+ 0.267 |—0, 022 | 26.929 | 6 22 15.035 11. 894 |— 0.030 y Geminorum. . . 7 | 6 34 13.369 |+0. 293 |-+0. 049 |— 0.059 |-++ 0. 277 |—0. or4 | 13.915 | 6 31 2.001 11.914 |— 0.010 15 Monocerotis . .| . 7 | 6 37 48.020 |+0, 287 |-0.044 |— 0,008 |+ 0.270 |—o, o10 | 48.603 | 6 34 36.717 11, 886 |— 0.038 24 H.Camelop.. .| E.| 7 | 6 46 23.493 |+0.473 |+0.043 |— 1.783./+ 1.194 |—0.003 | 23.417 | 6 43 11.550 |-o 3[11. 867] ¢ Geminorum. . .| W.| 7] 7 © 27.689 |—0. 296 |+0. 252 |— 0.070 |— 0. 329 |+0. 010 | 27.256 | 6 57 15.283 |—-O 3 11.973 |+ 0.049 y Canis Majoris. . 71 7 1 44.039 |—o. 267 |-+0. 228 |4 0.138 |— 0.320 |-+0. 012 | 43.830 | 6 58 31. 893 : 11. 937 |-+ 0.013 y? Volantis. ... 7| 7 12 56.764 |—0. 156 |+0. 134 {4+ 0.939 |— 0.914 |+0.022 | 56.789 | 7 9 45.011 {r1. 778] 4 Geminorum. . . 7 | 7 14 39.437 |—0. 293 |+0. 252 |— 0.045 |— 0. 322 |+0.023 | 39.052 | 7 II 27.135 11.917 |— 0.007 6 Geminorum. . . 7 | 7 16 25.664 |—0. 297 |0. 255 |— 0.080 |— 0. 333 |-+0.025 | 25.234 | 7 13 13.303 11.931 |-+ 0.007 Piazzi vii, 67. .| . 7 | 7 22 4.443 |—0. 393 |-o. 339 |-- 0.766 |— 0.848 |40.030 | 2.805 | 7 18 51.046 {1r.759]] .. 8 Canis Minoris. .| W.| 7 7 24 5.411 |—0. 286 |-Lo. 247 |+ 0.002 |— 0. 311 |-+0.032 | 5.095 | 7 20 53.154 |—O 3 II.941 |+ 0.017 NORMAL EQUATIONS. Ss. Ss. Assuming a’ —-+0.736-+ da’ circle E. [e=te 902 ++ 2. 939 da’ — 0.634 d¢-+4+ 0. 282 dt | whence da’ == — 0. 308 a//=—+o.311+ da” “« W. — 9, 039 + 3.367 da’ — 0.045 dc — 0, 129 dt 6a’ = +0, 011 ¢ =+0. 288 + dc By — 0. 169 — 0. 634 da’ — 0. 045 da’’ +. 17.760 dc — 0.024 d¢ dc =—0.001 AT =—043™118.921 + df ule -+- 0. 047 + 0, 282 da’ — 0. 129 da’/ — 0.024 dc + 11.071 dt | df =-+ 0.004 a’ — + 05.428 (circle east); 2/” = ++ 08.322 (circle west); c= 0%.287 (+ with circle E.). Chronometer No. 1295, at 64 49™.5 chron. time, oF 3™ 11°.924 + 08.008, fast; losing 0%.055 per hour. Mar.23| @ Argus. .... E.| 7 | 6 24 32.493 |+0. 222 |+0.005 |+ 0.785 |-+ 0.547 |—0. 032 | 34.020 | 6 21 23.307 |—o 3[10.713]) .. 10 Monocerotis . . 7 | 6 25 24. 884 |to0. 276 |0.007 |-+ 0.128 |+ 0. 333 |—0.032 | 25.596 | 6 22 15.016 10. 580 |-— 0. 003 y Geminorum . . 7 | 6 34 12.004 |-+-0. 293 |+-v.007 |— 0.074 |+ 0.346 |—0. 023 | 12.553 | 6 31 1.982 10. 571 |— 0.012 15 Monocerotis . . 7 | 6 37 46.653 |+0. 287 |-+0.007 |— 0.010 |+ 0.337 |—0.019 | 47.255 | 6 34 36.700 10.555 |— 0.028 & Geminorum . 4 | 6 41 58.001 |-Lo. 289 |-+o. 007 |— 0,040 |+ 0.341 |—o. o15 | 58.583 | 6 38 48.069 10. 514 |— 0. 069 24 H.Camelop...] . 7| 6 46 22.557 |+0.473 |+0.012 |— 2.257 |+ 1.490 |—0. O11 | 22.264 | 6 43 11.457 [10. 807] 3 % Canis Majoris. .| E.| 7 | 6 51 59.004 |-+0.270 |—0.007 |4+ 0.197 |+ 0.339 |—0.005 | 59.798 | 6 48 49. 257 —O 3 10.541 |— 0.042 ¢ Geminorum 7 | 7- © 26.344 |—o. 296 |-+0. 221 |— 0.063 |— 0.400 |+0. 004 | 25.810 | 6 57 15.264 |—o 3 10.546 |— 0.037 Canis Majoris. . 7| 7 1 42.780 |—o. 267 |-L0. 200 |+ 0. 124 — 0.388 |-+0.005 | 42.454] 6 58 31.873 10. 581 |— 0. 002 y? Volantis. . .. 7 | 9 12 55.700 |—0. 156 |+0. 122 |4+ 0.840 |— 1.110 |+0.016 | §5.412 | 7 9 44.942 [10. 470]| . . 6 Geminorum 7 | 4 16 24.426 |—0. 297 |--0. 236 j— 0.071 |— 0. 404 |+0. 019 | 23.909 | 7 13 13.284 “10.625 |+ 0.042 Piazzi vii,67 . . 7 | 7 22 3.321 |—0. 393 |+0. 308 |— 0.685 |— 1.030 |+0. 025 1.546 | 7 18 50.991 [10.555]; . - B Canis Minoris. . 7 | 7 24 4.109 |—0. 286 |-+-0. 235 |-+ 0.002 |— 0. 378 |+0.027 | 3.709 | 7 20 53.137 10.572 |— 0. O11 25 Monocerotis . .| W.| 7 | 7 34 43-127 |-.0. 276 |+0. 235 |+ 0.064 |— 0.375 |+0.038 | 42.813 7 31 32.069 |—o 3 10.744 |+ 0. 161 NORMAL EQUATIONS. . Se Assuming @/ ==-+ sie +- da’ circle E. [ Oo = — 0.077 + 3.005 da” — 0.137d¢+ 0.752 d¢ ) whence da’ — + 0. 028 a// —+0,294-+ da/7 “ W. + 0. 032 + 3.396 da’’— 0.4146c+ 0.234 ot da// = — 0. 006 ¢ =+0.333-+ dc « E, — 0. 355 — 0. 137 da’ — 0.414 da’’ + 17.592 dc — 0.020 dt | 6c =-+0.020 AT =— 0b 3™ 108,582 + d¢ L + 0. 051 + 0. 752 da’ + 0. 234 da’’ — 0.020dc¢+ 11.071 & J df ==—0,006 a/ = + 0%.542 (circle east); a/” = + 08.288 (circle west); «= 0%.353 (+ with circle E.). Chronometer No. 1295, at 6° 54™.8 chron. time, 04 3™ 108.583 + 08.014, fast; losing 0*.060 per hour. IN MEXICU AND CENTRAL AND SOUTH AMERICA. Transits of stars observed at the Central and South American Telegraph Station, Panama, by of sidereal chronometer Negus 1295. 75 Lieut. John A. Norris, with transit No. 1504, to determine the correction n 3 ; Flexure Aberra- Senne Date. Name of star. “s = lea! ae Level. | Azimuth. Bete Rate. | of corr. R.A. Conese uv. 3 4 _Jof pivots. mation. banstt: 5/24 1884. him. S$. S. S. $i: ss S. S. Aim. 5s. him. 5. 5 Mar.24| a Argus, .... E. 7 6 24 31.043 |+0. 222 0. 012 |+ 0. 762 |+ 0.539 |—0. 029 | 32.525 6 21 23.270 \—o 3 [9.255]i . - 1o Monocerotis . . 7 | 6 25 23.377 |+0. 276 [—9. O15 j+ 0.125 |+ 0.328 |—o. 029 | 24.062 | 6 22 14.997 9.065 |— 0.028 y Geminorum.. . 7 | © 34 10.514 |+0. 293 j0. 024 |-— 0.072 |-+ 0. 341 |—0. 020 | 11.032 | 6 31 1.963 g. 069 |— 0.024 15 Monocerotis . 7 | 6 37 45.157 |+0, 287 —0,027 |— 0.009 |+ 0.332 |—0. 016 | 45.724 | 6 34 36. 682 g.042 |— 0.051 € Geminorum. . . 7 | © 41 56.570 |+0. 289 —o, 031 |— 0.038 |-+ ©. 336 |—0. 012 | 57.114| 6 38 48.051 9.063 | 0.030 24 H. Camelop.. . 7| 6 46 21.000 |+0. 473 —-0.058 |-- 2.191 |+ 1.468 |—0. 008 | 10.684 | 6 43 11.360 [9.324]| . - 8 Canis Majoris. .| E.| 7 | 6 51 57.520 |+0. 270 Le 038 |+ 0. 191 |-++ 0. 334 |—0.co2 | 58.275 | 6 48 49.238 |—o 3 9.037 |— 0.056 ¢ Geminorum. . .| W.| 7 | 7 © 24.890 |—o. 296 es 181 |— 0.087 |— 0.394 |+0. 006 | 24.300] 6 57 15.245 |—o 3 9.055 |— 0.038 y Canis Majoris. . 7 | 7 1 41.270 |—o. 267 to, 165 |+ 0.171 |— 0.383 |+0.007 | 40.963 | 6 58 31.853 g. 110 |+ 0.017 y? Volantis. . . 7 | 7 12 53.836 |—o.156 +0. 100 |+ 1.163 |— 1.096 |+0.018 | 53.865 | 7 9 44.873 [8.992]} .. 4 Geminorum. . . 7| 7 14 36.814 |—o. 293 Lo. 189 |— 0.056 |— 0. 385 |+v. 019 | 36.288 | 7 11 27.096 g. 192 | 0.099 6 Geminorum. . . 7| 7 16 22.977 |—0. 297 ‘+0. 193 |— 0.099 |— 0. 399 |+0.021 | 22.396 | 7 13 13. 265 g. 131 |+ 0.038 Piazzi vii, 67. .| . 7 | 7 22 1.993 |—0. 393 lho, 262 |— 0.949 |— 1.016 |+-0.027 | 59.924 | 7 18 50.945 [8.979]} . 8 Canis Minoris. .| W.| 7 | 7 24 2.716 |—o. 286 +2: 195 |-+ 0.003 |— 0. 373 |+0.029 | 2.284 | 7 20 53.119 |—o 3 9.165 |+ 0.072 NORMAL EQUATIONS. S. d- Assuming @/ =—-+ 0.499 + da’ circle E. oO = — vu. 081 + 3.005 da’ — 0.137 de-+ 0.7520¢ | whence da’ = - 0.027 a// = +0. 393+ da’? « W. — 0, 023 + 3. 367 da’/ — 0.045 dc — 0. 129 d¢ da/’ = + 0. 006 c¢ =-+0, 380+ de © oF: + 0. 560 — o. 137 da’ — 0. 045 da’’ + 17.678 dc — 0. 062 dt dc =— 0.032 AT =— 0b 3™ 98,092 + d¢ + 0.050 + 0. 752 da’ —- 0. 129 da/” — 0.062 de + 11.071 Wf of ==— 0.006 a/ = + 04,526 (circle east); 2’/ = + 0%.399 (circle west); c= 0*.348 (+ with circle E.). Chronometer No. 1295, at 65 54™,8 chron. time, ob 3™ 98,093 + o%.011, fast; losing 0.059 per hour. Transits of stars observed at La Libertad, by Lieut. Charles Laird, with Hf, O. transit No. 1, to determine the correction of sidereal chronometer Negus 1470. n 3 2 F pete: Seconds Date. Name of star. 3 é ae ae Flexure.| Level. | Azimuth. ee Rate. oe R.A, oe uv 2 . mation. E O14 1884. him. 5. Ss. S. S. S. 5. S. him. 5. hom. 5. S. Mar. 22 | 24 Come (seq.) . .| W.| 7 | 18 17 40.517 |—0.579 |—0. 331 |— 0.075 |— 1.255 |—0. 123 | 38.154 | 12 29 20.918 |—5 48 17.236 |— 0.026 y VWirginis (med.) . 7 | 18 24 8.624 |0. 533 |—o. 380 |+ 0.181 |— 1.186 |—o. 114 | 6.592 | 12 35 49. 348 17.244 |— 0.018 31 Coronz Borealis. 7 | 18 34 24.993 |—0. 603 |—0. 451 |— 0. 211 |— I. 345 |—0. 099 | 22.284 | 12 46 5.152 17. 132 |— 0. 130 6 Virginis. .. . 7 | 18 38 7.460 |—o. 544 |—0. 392 |+ 0.121 |— 1.188 |—0.094 | 5. 363 | 12 49 47.921 17.442 | 0. 180 e Virginis.... 7 | 18 44 45.946 |—o. 551 |—o. 373 |4+ 0.025 |— 1.211 |—o. 084 | 43.752 | 12 56 26. 435 17. 317 |+ 0.055 69 H. Ursze Majoris. 7 | 19 12 35.621 |—0. 762 |--0. 600 |— 1.088 |— 2,411 |—0. 044 | 30.716 | 13 24 13.994 [16.722]] .. t Bootis..... 7} 19 30 6.811 |—0. 553 |--0. 519 |--- 0.061 |— 1.248 |—0.019 | 4.411 | 13 41 47.119 17. 292 |4- 0.030 B Centauri. ... 7 | 19 44 1.836 |—o. 315 |—o. 305 |+ 1.393 |— 2.359 |+0.001 | 0.251 | 13 55 43.177 —5 48[17.074] a Draconis... .!|E.| 7 | 19 49 30.729 |+0. 809 |+0. 391 |— 0.197 j+ 2.705 |+0. 009 | 34.446 | 14 1 17.247 |—-5 48[17.199]] . . “+a Bootis..... 7 | 19 58 39.471 |+0. 581 |+0. 281 |— 0.013 |+ 1.223 /+0.022 | 41.565 | 14 10 24. 265 “17.300 |+ 0.038 5 Urse Minoris. . 7; 20 16 0,729 |+1.057 |+0. 511 |— 0. 399 |+ 4.807 |+0.046 | 6.751 | 14 27 49.539 [17.212]} .. ¢ Bootis(med.). . 7 | 20 23 53.801 |+0.552 |+0. 275 |— 0.001 |+ 1.183 |+0.058 | 55.868 | 14 35 38.561 17. 307 |+ 0.045 e Bootis..... 7 | 20 28 12.113 |+0.555 |--0. 291 |— 0.029 |+ 1.293 |+0. 064 | 14. 287 | 14 39 57. 204 17.083 |— 0.179 Piazzi xiv, 221 . 7 | 20 39 2.019 |-+0. 552 |-+0. 275 |— 0.003 |+ 1.186 |+0.080 | 4.109 | 14 50 46, 706 17.403 |+ O. 141 py Bootis..... 7 | 20 47 45.411 |+0..555 |+0. ag1 |— .0.029 |+ 1.290 |+0. 092 | 47.610 | 14 59 30. 320 17.290 |+ 0.028 3 Serpentis... .| . 7 | 20 57 42.621 |+0. 547 |+0. 264 |-+ 0.015 |+ 1.151 |+0.107 | 44.705 | 15 9 27.413 17. 292 |-+ 0.030 B Libre... .. E.| 7 | 2059 3.071 |+0.515 |+0. 249 |+ 0.041 J+ 1.160 |+0.110] 5.146 | 15 10 48.078 |—5 48 17.068 |— 0. 194 é NORMAL EQUATIONS. a Assuming a = + 0.618 + da’ circleW. [ 0 =— 0. 305 + 2.559 da’ — 0.312d¢+ 0. 163 dt je 6a =+0.113 a//—+0.148-+ de’ “ E, + 0, Oo1 + 2. 868 da/’ — 3.257 dc— 1.137 dt da// = — 0. 04! ¢ =+1. 208 4 dc “« E, + 0. 782 -— 0. 312 da’ — 3. 257 da’’ + 21. 200 dc + 0.706 d¢ | bc —=— 0,042 AT ==— 55 48™ 178.265 + dt — 0, 229 4- 0. 163 da’ — 1.137 da’’ -+ 0.706 dc + 14. 206 dt J 6¢ =+0.014 a’ = + 04.731 (circle west); a// = + 0%.107 (circle east); c= 1°.166 (+ with circle E.). Chronometer No. 1470, at 195 43™.4 chron. time, 55 48™ 178.262 -+ 08.021, fast; losing 0.066 per hour. 76 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at La Libertad, by Lieut. Chas. Laird, with H. O. transit No. 1, to determine the correction of sidereal chronometer Negus rg70. Jf g Trans} egal Seconds Ch Date. a ransit over : tion anc ’ ronometer ate Name of star. 2 2 vhead of threads: Flexure.| Level. | Azimuth. colli- Rate. eae R. A. correction: uv, a iS mation. Suen! o|4 1884. he me S. S. ve S. S. Si S. hem. S. him. 5. S. Mar. 23; » Leonis.. . . .| W.| 7 | 17 19 21.429 |—0.535 —0. 031 |— 0. 512 |— 0.878 | 0.000 | 19.473 | IT 31 2.945 |—5 48 16.528 |— 0.063 3 Draconis... . 7 | 17 24 17.829 |—o. 843 |—o0. 017 |+ 4.557 |-— 2.284 | 0.000 | 19.242 | 11 36 2.938 [16.304]}) . . B° Leonis: 3. % 24? 7 | 17 31 28.801 |—0.552 j+0. 011 |+ 0.067 |— 0.910 | 0.000 | 27.417 | 11 43 10,828 16. 589 |-— 0. 002 B Virginis eae ee 7 | 17 32 59.831 |—0. 540 |--0. o16 |— 0. 416 |— 0.879 | 0.000 | 58.012 | II 44 41.515 16.497 |— 0. 094 w Virginis., . . . 7 | 17 43 16.224 |—0. 551 |+-0.030 |— 0. 236 |— 0.885 | 0.000 | 14.582 | 11 54 58.024 16.558 |— 0.033 o Virginis. 2. . 1]. 7 | 17 47 38.420 |—0. 556 |+-0. 032 |— 0.158 |— 0.890 | 0.000 | 36.848 | 11 59 20. 309 16. §39 |— 0.052 4 DraconisH. . .| W.| 7 | 17 55 2.100 |—1.152 +0. 067 |-+ 9. 643 |— 4.314 | 0.000] 6.344 | 12 6 50.137 |—5 48[16. 207] 20 Come . ee E. | 7 | 18 12 10.963 |+0. 554 |—o. 321 |+ 0.440 |+ 0.901 | 0.000 12, 537 | 12 23 55.885 |—5 48 16.652 |+ 0.061 « Draconis... . 6 | 18 16 41. 488 |+-0.995 |—o. 464 |+ 7.291 |4+ 2.501 | 0.000 | 51.811 | 12 28 34. 888 [16.923]} .. y Virginis (med) .|,. | 7 | 18 24 5.526 |+0. 533 |—0. 258 |— 0.720 |+ 0.838 | 0.000] 5.919 | 12 35 49. 356 16. 563 |— 0. 028 31 Coronz Borealis 7 | 18 34 19. 650 |+0. 603 |—a. 285 |-+ 0.839 |+ 0.950 | 0.000 | 21.757 | 12 46 5.158 16, 599 |-++ 0. 008 O Virginis. .. 7 | 18 38 4.080 |+0. 544 |—o. 262 |-- 0.481 |+ 0.840 | .0.000 | 4.721 | 12 49 47.929 16. 792 |-+ 0. 201 Groom. 2001 E. | 7 | 19 11 18.664 |+-0. 954 |—o. 680 |+ 8.585 |+ 2.864 | 0.000 | 30. 387 | 13 23 13.681 |—5 48[16.706]] . NORMAL EQUATIONS. de Ss. Assuming @/ = — 2. 388+ da’ circle W. 0 = + 0. 009 + 2. 832 da’ + 2.510 dc —o. 319 & whence da’ —- 0. 219 a// = — 2.544+ da’ « E, + 0, 201 + 2.829 da’? — 3.177 dc —0. 997 Jt da’/ = — 0. 370 ¢ =+1.048 4+ dec Es ++ 2.548 + 2. 510 da’ — 3.177 da’/’ + 16. 887 dc —- 0. 769 dt dc =—0.190 AT =— 5» 48 168.557 + dz. '— 0. 139 — 0. 319 da’ — 0. 997 da’’ — 0.769 dc + 9. 698 dt of =+ 0,003 a’ = — 28,169 (circle west); a” = — 28.914 (circle east); ¢ = 08.858 (-+ with circle E.). Chronometer No. 1470, at 175 58™.2 chron. time, 55 48™ 168.591 + 08.020, fast; losing 08.007 per hour. Mar. 24| 4 Geminorum -| W.] 7 | 12 59 44.170 |—0.574 | 0.000 |+ 0.081 |— 0. 324 |—0. 082 | 43.271 | 7 11 27.077 |—5 48 16.194 |— 0.013 6 Geminorum . 7 | 13 I 30.321 |—0. 587 |+0.015 |+ 0.226 |— 0.335 |—o. 081 | 29.559 | 7 13 13.265 16. 294 |-+ 0. 087 Piazzi, vii 67 7|13 7 5.923 |—0. 864 |+0. 042 |+ 3.109 |— 0.853 |—0.080 | 7.277 | 7 18 50.941 [16.336], .. 8 Canis Minoris . 7 | 13 9 10.390 |—0. 554 |+0. 110 |— 0.120 |— 0.313 |—0.080 | 9.433} 7 20 53.119 16. 314 |-+ 0. 107 a Canis Minoris .,; W.) 7 | 13 21 32.539 |—0.547 |+0. 265 |— 0. 191 |—. 0.312 |—0. 076 | 31.678 | 7 33 15.204 |—5 48 16. 384 |+- 0.177 5 Urs Minoris. .| W.} 7 | 20 16 5.557 |—1.057 |+0.150 |+ 2.289 |— 1.300 |+0.027 | 5.666 | 14 27 49.643 |—5 48[16.023]]) . . = Bootis (pr.) . 6 | 20 23 35.416 |—0. 574 |+0. 122 |+ 0.039 |— 0. 324 |+0.029 | 34.708 | 14 35 18. 489 16. 219 |+ o.o12 pe Virginis . 7 | 20 25 15.971 |—O. 523 |-+0. 119 |— 0.197 |— 0.311 |+-0.030 | 15.089 | 14 36 59.093 15.996 |— 0, 211° Piazzi, xiv 221 7 | 20 39 3.654 |—0. 569 |+0. 211 |+ 0.016 |—~ 0. 321 |+-0.033 | 3.024 | 14 50 46.745 |-5 48 16.279 |+ 0,072 2 H.Urse Minoris.| E. | 7 | 20 43 59.490 |-+0. 828 |+0. 286 |4 1.647 |+ 0.674 |+0.034 | 2.932 | 14 55 46.537 |-—5 48[16.395]| . . yp Bootis. . . ‘7 | 20 47 45.214 |10. 601 |+-0. 188 |+ 0. 224 |4- 0. 304 |++-0.035 | 46.566 | 14 59 30. 364 16. 202 |— 0, 005 3 Serpentis . 6 | 20 57 42.727 |+0. 547 |+0.134 |— 0.117 + 0.271 |+-0.038 | 43.600 | 15 9 27.450 16. 150 |— 0.057 t H.Ursz Minoris. 7 | 21 1 33.021 |-+-0. 849 |--o. 194 |+ 1.776 |-+ 0.714 |+0.039 | 36.593 | 15 13 20. 388 [16. 205] : 7! Serpentis . 7 | 21 8 41.551 |+0.571 |+0. 108 |+ 0.036 |+ 0. 281 |+0. 040 | 42.587 | 15 20 26.447 16. 140 |— 0, 067 Coronz Borealis . 7 | 21 11 19.264 |+0. 607 |+0. 107 |+ 0. 262 |+ 0. 310 |0. 041 | 20.591 | 15 23 4.562 16.029 |— 0.178 a Corone Borealis . 7 | 21 18 3.209 |+0. 601 |+0. 091 |+ 0.219 |+ 0. 303 |+0.043 | 4.466 | 15 29 48. 365 16. 101 |— 0. 106 ‘a Serpentis . . .| E. 7 | 21 26 50.779 |+0. 549 |+0.063 |— 0.146 |-+ 0.272 |+0.045 | 51.562 | 15 38 35.170 |—5 48 16. 392 |-+ 0.185 NORMAL EQUATIONS, FIRST SERIES. Assuming a’ = — 18.452 + da’ circle W. ¢ 0 = — 0.097 + 1. 248 da’ —- 0. 524 d¢ t whence da’ = + 0.077 AT =— 5" 48m 168.296 + d¢ + 0.052 —o. 524 da’ + 4. 233 dt dt = — 0.003 NORMAL EQUATIONS, SECOND SERIES. Ss. S. Assuming a// == — 0.670 -+ da/’ circle W. ( o=-+ 0.032 + 1. 609 da’’ + 4: 460 dc—o.171 dt] whence da// ~-+ 0. 056 al// = — 1.047 + da/’” “ E. } — 0. 853 + 2. 532 da’/’— 3.549 dc —1. 726 d¢ da/// = + 0, 220 c =+0.370+ dc “« + 2,001 + 1. 460 da’/” — 3. 549 dal!’ + 15.497 dc + 4. 263 d¢ dc = —0.080 AT =—5» 48™ 168.2104 dt. l + 0. 369 — 0. 171 da’’ — 1.726 da’/’ + 4. 263 dc + 9. 635 d¢ df =+0,038 a/ == — 15.375 (circle west); a// —— 0°.614 (circle west); a//” —— 08.827 (circle east); c= o*.290 (+ with circle E.). Chronometer No. 1470, at 184 27™ chron. time, 55 48™ 16.207 + 08.023, fast; losing 0*.070 per hour. IN MEXICO AND CENTRAL AND SOUTH AMERICA. 77 Transits of stars observed at La Libertad, by Lieut. Chas. Laird, with H. O. transit No. 1, to determine the correction of sidereal chronometer Negus 1470. a 3 Aberra- Date. Name of star. Z é Miiuco thai Flexure.} Level. | Azimuth, eee Rate. con R.A. ee v 2 . mation. weanetty O14 1884. ho mS. S. vy S. ss a gs hem. 5. hm. 3 s Mar. 25} ¢ Geminorum . W.!| 7 | 12 45 31.079 |—o. 584 |—0. 150 |+ 0.149 |— 0. 881 |—o. 089 | 29.524 | 6 57 15.226 |—5 48 14.298 |4 0.058 25 Camelopardalis . 7 | 12 54 57.614 |—1.527 |—1.044 |-+ 8.024 |— 6.426 |—0.073 | 56.568 | 7 6 42. 336 ? [14.232]} .. 4 Geminorum 7 | 12 59 43.043 |—0.574 |—0. 446 |+ 0.065 |— 0. 860 |—v. 065 | 41.163 | 7 II 27.039 14.124 |— 0.116 6 Geminorum 7 | 13 I 29.230 |—o. 587 |\—0. 465 |-+ 0.181 |— 0. 890 |—o0. 062 | 27.407 | 7 13 13.246 14. 161 |— 0.079 « Geminorum 7| 13 6 48.994 |—o0. 603 |—0. 535 |+- 0. 313 |— 0.934 | 0.000 | 47.235 7 18 32.915 14. 320 |+. 0.080 8 Canis Minoris 7113 9 9.399 |—0.554 —0. 506 |— 0.096 |— 0. 833 |+0.004 | 7.414 | 7 20 53.101 |—5 48 14.313 |4+ 0.073 x Geminorum ..| E. | 7 | 13 28 15.503 |+0.620 |—o. 053 + 0.402 |+ 0.942 |+0.036 | 17.450] 7 40 3.376 |—5 48 14.074 |— 0. 166 Groom. 1374 7 | 13 34 28.500 }+-0. 989 |+0. 225 |+ 3.107 |+ 2.884 |+0.046 | 55.751 | 7 46 20.701 [15.050]} .. w! Cancri. . . . 7 | 13 42 8.863 |+0.597 |+0. 119 |+ 0. 227 |4+ 0.870 |+0.059 | 10.735 | 7 53 56.479 14. 256 |+- 0.016 x Geminorum 7 | 13 44 37-656 |--o. 603 |+0.115 |+ 0.277 |+ 0. 889 |+0. 063 | 39.603 | 7 56 25. 348 14.255 |+ 0.015 3 Urs MajorisH . 7 | 13 49 26.743 |+0. 866 |+0. 150 |+ 2.203 |-+ 2.169 |+0.071 | 32.202 | 8 1 18.503 [13.699]/ .. B Cancri..... 7 | 13 58 28. 103 |+0. 557 |-+0.074 |— 0.068 |+ 0.795 |+0. 086 | 29.547 | 8 10 15.159 14. 388 J+ 0.148 yn Cancri. 7 | 14 14 14.377 |+0. 584 |+0. 038 |+ 0.132 |+ 0. 839 |-+0. 113 | 16.083 | 8 26 1,884 14.199 |— 0.041 6 Hydre 7 | 14 19 45.520 |+-0. 548 |+.0.024 |— 0.125 |+ 0.789 |-++-0.122 | 46. 878 8 31 32.650 14.228 _— 0.012 6 Caneri. . . : 7 | 14 26 20.021 |+0.578 |+0.017 |-+ 0.091 ;+ 0.827 |+0. 133 | 21.667 | 8 38 7.397 14. 270 |+ 0.030 e Hydre ..../E. 7 | 14 28 52.706 |+v. 550 | 0.000 |— 0, 112 |+ 0. 789 |+0. 137 | 54.070 | 8 40 39.834 |—5 48 14.236 |— 0. 004 a NORMAL EQUATIONS. ss Assuming a’ = —1.634-+ da’ circle W. [ o——o. 890 + 1. 890 da’ + 2.493 e— 0.796 d¢ | whence da’ = + 0.533 a// = —0.931 + da” “ E, + 0,012 + 2.991 da’’— 4.096dc— 1.821 dt da// = — 0. 037 c =+0.841+4 dec fe | — 0. 836 + 2. 493 da’ — 4. 096 da’’ + 20.623 de+ 4.151 dt dc =— 0.037 AT =—5248™ 148.270 + dt l + 0. 100 — 0. 796 da’ — 1. 821 da// + 4.151 de + 13. 402 dt d¢ =+0,031 a/ = — 18.101 (circle west); a/” = — 08.968 (circle east); c= 08.804 (-+ with circle E.). Chronometer No. 1470, at 13" 38™.9 chron. time, 5" 48™ 148. 240 + 08,016, fast; losing 0%.106 per hour. Mar.27| 6 Hydre .. .| W.} 7 | 14 19 46.279 |—0. 548 |v. 171 |— 0.219 |— 0.347 | 0. 000 45.336 | 8 31 32.622 |—5 48 12.714 |4 0.152 y Caneri. 7 | 14 24 49.350 |—0. 586 |+0.173 |+ 0.267 |— 0. 372 | 0.000 48. 832 | 8 36 36.220 12. 612 |+ 0.050 6 Caner. . =. > 7 | 14 26 20, 650 |—o. 578 |+0, 168 |-+ 0. 160 |— 0. 364 | 0.000 | 20.036 | 8 38 7.367 12. 669 |4- 0. 107 @ Caner. a ws 7 | 14 27 55.119 |—o. 607 |+0. 171 |+ 0.527 |— 0.395 | 0.000 | 54.815 | 8 39 42.524 12.291 |— 0. 271 6? Cancri (med). . 7 | 14 35 24.781 |—o. 612 |+0. 154 |+ 0.598 |— 0.403 | 0.000 | 24.518 | 8 47 11.912 12. 606 |+ 0.044 € Hydra... 2 = « 7 | 14 37 31.190 |—0. 549 |+0. 133 |— 0.211 |— 0.347 | 0.000 | 30.216 | 8 49 17.553 12. 663 |+ 0. ror p Urse Majoris. . 7 | 14 40 17.493 |—0. 854 |+0. 194 |+ 3.711 |— 0.924 | 0.000] 19.620] 8 52 7.358 [12. 262] 5 6 Hydre 7 | 14 56 35.340 |—0. 541 |+0.079 |— 0.316 |— 0.345 | 0.000 | 34.217 | 9 8 21.667 12.550 |— 0.012 « Argus. .... W.| 7/15 2 18.121 |--0. 323 |+-0.037 |— 3.124 |— 0.666 | 0.000 | 14.045 | 9 14 1.783 |—5 48[12. 262] A Urs Majoris . E.| 7 | 15 10 32.550 |+0. 793 |+0.135 |+ 3.389 |-+ 0.685 | 0.000 | 37.552 | 9 22 25.199 |—5 48[12. 353] d@d Urs Majoris. . 7 | 15 12 21.500 |+0., 894 |--0. 176 |-++ 4.896 |4 0.906 | 0.000 | 28.372 | 9 24 15.701 [12..671]) . . o Leonis.... . 7 | 15 23 11.097 |+0. 558 |+-0. 207 |— 0. 106 |-+ 0. 310 | 0.000 | 12,066 | 9 34 59.575 12.491 |— 0.071 e Leonis..... 7 | 15 27 29.084 |-+0. 593 |+0. 259 |4- 0.405 |+ 0.335 | 0.0900 | 30. 676 | 9 39 18.027 12,649 |+ 0. 087 B Virginis. ... 7 | 17 32 53.419 |-+0. 540 |-+0. 123 — 0.378 |+4 0.305 | 0,000 | 54.009 | IT 44 41.520 12. 489 |— 0.073 nw Virginis. ...) . 7 | 17 43 9.797 |-+0.551 |+0.094 |— 0,214 |+ 0.307 | 0.000 | 10.535 | II 54 58.036 12,499 |— 0. 063. o Virginis . .| E.| 7 | 17 47 32.027 |4+0.556 |+0.085 |— 0.144 |+- 0. 309 | 0.000 | 32. 833 | 11 59 20.317 |—5 48 12.516 |— 0.046 é NORMAL EQUATIONS. a Assuming a’ =— 1. 673 -+ da’ circle W. [ o=-+0.061 + 2.927 da’ + 0.487 dc— 0.227 dt | whence da’ == — 0.026 a// = —2.000+ da’ “ E, + 0.055 + 2,337 dal’ — 2.574 0c — 0. 851 df dal’ = + 0. 033 ¢ =-+0. 282 + dc “« E, — 0. 697 + 0. 487 da’ — 2.574 da’/’ + 20,056 dc — 2. 453 dt dc =+0.043 AT == 54 48™ 125.569 + df [ — 0, 210 — 0, 227 da’ — 0. 851 da’// — 2.453 dc + 13. 203 dt é¢ =+0.026 a/ = — 15.699 (circle west); a/” == — 1%.967 (circle east) ; ¢ = 08.325 (+ with circle E.). Chronometer No. 1470, at 15" 28™.6 chron, time, 55 48™ 128.562 ++ 0°.022, fast; rate, 0%.000 per hour. 78 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at Guatemala City, by Miles Rock, esq., with Transit No. 1497, to determine the correction of sidereal chronometer Negus 1527. “ 9 § Flexure Aberra- x : : . Seconds | Transit over | and in- : ; tion and Chronometer Date. Name of star. s 5 mean of threads.| equality Level. | Azimuth. colli- Rate. ] oe R.A. eorkection. uv. Sieg of pivots. mation. ati 514 1884. him. 3. S. 5. is. S. s s hm. 5. hem. 5. 5. Mar.25| 51 Cephei.. . . .| W.| 3] 7 46 5.522 \—2. 656 |-+0. 588 —25. 561 |--17. 139 |-+0, 068 | 20.822 | 6 45 57.074 |—o 59[23.748]] .. 6 Geminorum. . . 7| 8 12 35.900 |—o. 459 |--0.056 |— 0.183 |— 0. 895 |+0. 040 | 34.459 | 7 13 13.246 21. 213 |— 0. 088 Piazzi vii,67 . . 7 | 8 18 17.486 |—v. 693 |+0. 039 |— 2.890 |— 2, 282 |4-0.034 | 11.694 | 7 18 50. 885 [20. 809]} . . a? Geminorum. . .| W.| 7 | 8 26 36.621 |—0. 483 |+0. 326 |— 0.459 |— 0.979 |-+0. 025 | 35.051 | 7 27 13.612 |—0 59 21.439 |+ 0.138 a Canis Minoris. .| E.| § | 8 32 35.270 |40.426 |—o. 168 |+ 0.180 |+ 0.793 |+0.019 | 36.520 | 7 33 15.278 |—o 59 21.242 |— 0.059 3 Urs Majoris H.. 7 | 9 © 39.614 |+-0. 695 |—0.153 |— 2.524 |4+ 2.183 |—0. 010 | 39.805 | 8 1 18.503 (21. 302] my Cancri... . 7 | 9 2§ 22.043 |+v. 456 |—0.055 |— 0.130 |+ 0.844 |—0.035 | 23.123 | 8 26 1.884 21. 239 |— 0, 062 é Hydre. . -|E.) 5! 9 39 59.934 |+0. 429 |—0. 057 |-+ 0.154 |+ 0.795 |—v.050 | 61.205 | 8 40 39.834 |—o 59 21.371 |+ 0.070 NORMAL EQUATIONS. Sr ve Assuming a7 =-+1.199+ da’ circle W. ( 0o—= —o. 212 + 2. 860 da’ + 3.613 dc — 1.094 d¢ | whence da’ —-+ 0.097 a//=+ 1.0874 da” « E, | — 0. 048 + 1.221 da’// — 1.259 dc — 0. 337 &¢ da’! = + 0, 038 c =+0.819 4 dc eB. — 0. 220 + 3. 613 da’ — 1. 259 da’’ + 10.974 dc + 0. 736 d¢ dc =—0.0I0 AT =— 0} 59™ 210.311 + df — 0, 033 — I. 094 da’ — 0. 337 da’’ + 0.736 dc + 5. 468 dt d¢ =+ 0.029 a/ = + 1%.296 (circle west); 2/7 = + 1,125 (circle east); ¢ = 08.809 (+ with circle E.). Chronometer No. 1527, at 84 51™.4 chron. time, o 59™ 21°.301 + 08.030 fast;’ gaining 08.064 per hour. Mar.25| 6 Leonis. ... . E.{| 7 | 12 7 18.950 |+0.457 |0. 040 |— 0.155 |-+ 0.817 |+0.064 | 20.173 | Ir 7 58.569 |—o 59 21. 604 |+ 0.021 4 Draconis. ... 4 | 12 23 55.460 |-+0. 713 |—0. 141 |— 3.078 |+ 2.224 |+0. 047 | 55.225 | IL 24 33.704 [21.521]} .. v Leonis. .... 5 | 12 30 23.151 |+0.415 |—o. 114 |+ 0.328 |+ 0.762 |+0. 040 | 24.582 | I1 31 2.946 21. 636 |+ 0.053 y Cori. .... E 4] 13 9 12.851 |--0. 382 |—0. 097 |+ 0.702 |4+ 0.796 |+0. 001 | 14.635 | 12 9 53.116 |—o 59 21.519 |— 0.064 B Corvi..... W.| 7 | 13 27 42.700 |—o. 369 |—o. 118 |4+ 0.710 |— 0. 869 |-0. 019 | 42.035°| 12 28 20.456 |—o 59 21.579 |— 0.004 32?Camelop.H.. . 2/13 48 5.771 |—1.455 |—0. 322 |— 9.720 |— 7.726 |—0. og0 | 46.508 | 12 48 24. 319 [22. 189] @ Virginis. ... 6| 14 3 21.557 |—0. 406 |—o. 080 |+ 0. 362 |— o. 805 |—0. 056 | 20.572 | 13 3 59. 089 21.483 |— 0. 100 Polaris, S.P.. . 3 | 14 13 47.761 |+4. 343 |+0. 769 |+-45. 969 |+35. 148 |—0. 067 | 13.923 | I 15 50. 698 [23.225]) . . ¢ Virgins. . .| W.}| 7 | 14 28 12.079 |—o. 415 |—0. 069 |4+ 0.273 |— 0. 802 |—o0. 081 | 10.985 | 13 28 49. 309 |—o §9 21.676 |+ 0.093 NORMAL EQUATIONS. ; 5. Ss Assuming a’ =+1.291-+ da’ circle E. ( o=-—0o0,005 + 1.358 da’ — 0.493 dc+ 0. 274 d¢ ) whence Ja’ —=— 0. 008 a= 4+ 1.0464 da” « W. | —- 0. O51 + 3. 486 da’? + 1.694 de + 1.174 OF da// = + 0,032 ¢ z=+0.819 4 dc « E, + 0. 345 — 0. 493 da’ + 1.694 da’’ + 11. 001 dc -+ 0. 444 d¢ dc =—0.037 AT =— 0b Som 218.577 + df + 0. 017 + 0. 274 da’ +. 1.174 da’’ + 0. 444 dc + 6. 184 d¢ dt =-—-0.006 a’ = + 15.283 (circle east); 2’” — +. 1.078 (circle west); ¢ == 0%.782 (-++ with circle E.). Chronometer No. 1527, at 13 17™.7 chron. time, oh 59™ 219.583 + 09.020, fast; gaining 08.064 per hour. IN MEXICO AND CENTRAL AND SOUTH AMERICA. Transits of stars observed at Guatemala City, by Miles Rock, esq., with transit No. 1497, to determine the correction of sidereal chronometer Negus 1527. 79 4 oS $ Flexure Aberra- Secoids | Transit over | and in- ei tion and Chronometer Date. Name of star. 5 | ce |mean of threads,| equality Level. | Azimuth. colli- Rate. oe ania R.A. aOreeetiGin, v. |e of pivots. mation. reher ae ° O14 1884. him. s. 2. $e o SS v Ss. Am. Ss. a a Mar. 27| ¢ Canis Majoris. .| E. | 5 | 7 53 28.119 |+0.355 |—o. 129 |+ 0.928 |+ 0.780 |+0. 085 | 30.138 | 6 54 5.128 |—o 59 25.010 |+ 0.008 6 Geminorum . 7 | 8 12 37.286 |+0. 459 |—o. 096 |— 0.167 |+ 0.739 |-++0. 046 | 38.267 | 7 13 13.207 25.060 |+ 0.058 Piazzi vii,67 . . 7 | 8 18 15.800 |+0. 693 |+c. 069 |— 2.636 [+ 1.883 |+0.034 | 15.843 | 7 18 50.781 [25. 062] : a? Geminorum -| E.| 7 | 8 26 37.686 |+0. 483 |—o. 101 |— 0.418 |-++ 0. 808 |-+0. 017 | 38.475 | 7 27 13.572 |—O 59 24.903 |— 9.099 a Canis Minoris . 6 | 8 32 41.519 |—0. 426 |—o. 361 |+ 0.187 |— 0,728 |+0.005 | 40.196 | 7 33 15.243 |—O 59 24.953 |— 0.049 @ Geminorum . 7| 8 45 52.379 |—0.471 |—0. 109 |— 0, 282 |— 0, 813 |—0. 022 | 50.682 | 7 46 25.547 25.135 |-+ 0. 133 3 Urse Majoris, H.. 7| 9 © 49.007 |—0, 695 |—0. 322 |— 2.623 |— 2.003 |—0.051 | 43.313 | 8 1 18.403 [24. 910] e Hydre . ...|W.) 7 | 9 40 6.129 |—0. 429 |—o. 241 |4 0, 160 |— 0.729 |—0. 132 | 4.758 | 8 40 39.805 |—o 59 24.953 |— 0.049 4 NORMAL EQUATIONS. ‘ Assuming a’ =-+ 1.264-+ da’ circle E. { o=-+ 0.0624 1.920 da’ — 1.104 dc —o, 230 d¢ | whence da’ = — 0, 082 a//—=+41.109+ da’? « W. + 0.054 + 1,266 da’? + 1.406 dc — 0. 462 d¢ da/’ = +. 0, 060 ¢ =+0.793+4 de “ E. + 0. 776 — 1. 104 da’ + 1. 406 da’’ + 10, 682 dc + 0. 269 dt dc ==—0.089 AT =— 0? 59™ 258.010 4 dt — 0. 023 — 0, 230 da’ — 0. 462 da’’ +. 0. 269 de + 6. 464 dt df =-+0.009 a’ = + 18.182 (circle east); a’” = + 1%.169 (circle west); c= 08.704 (++ with circle E.). Chronometer No. 1527, at 85 35™.2 chron. time, o® 59™ 258.002 + 08.023, fast; gaining 0*.129 per hour. Mar.27| 6 Crateris ... .| W.| 7 | 12 13 1.150 - 387 |—o. 247 |+ 0.653 — 0.772 |+0.127 | 0.524 | II 13 34.990 |—O 59 25.534 |— 0.070 v Leonis . . 7 | 12 30 29.450 —0. 415 |—0. 147 |+ 0. 336 |— 0.749 |-+0.090 | 28.565 | II 31 2.945 25.620 |4+ 0,016 B Leonis.. 7 | 12 42 37.793 |—0. 444 |—0. 226 |— 0.013 |— 0.776 |+0. 066 | 36.400 | II 43 10. 832 25.568 |— 0.036 o Virginis. ... 7 | 12 58 47.157 |\—0. 433 |—0. 105 |+ 0.122 |— 0.759 |-+0, 033 | 46.015 | 11 59 20.317 25.698 |-+ 0.094 4 Draconis. . 6| 13 6 26.374 |—0. 937 |—0. 341 |— 5.782 \— 3.678 |+0.018 | 15.654 | 12 6 50,117 |—o 590[25. 537] a Canum Venat. .| E. | 6] 13 50 3.326 |+0. 503 |—0. 239 |— 0.484 '+ 0.912 |-0.071 | 3.947 | 12 50 38.322 |—O 59 25.625 |+ 0. 021 6 Virginis. . 7 | 14 3 23.400 |+0. 406 |—o. 026 |+ 0. 307 |+ 0.712 |—0. 098 | 24.701 | 13 3 59.106 25.595 |— 0.009 Polaris,S.P.. .| . 4/14 15 3.149 |+4. 343 [41.154 |-138. 976 |—31.073 |—0. 122 | 16.427 | I 15 50.372 [26. 055] ¢ Virgins... .| E.| 6 | 14 28 13.804 [40.415 |--0. 092 |+ 0.231 |+ 0.709 |—0. 149 | 14.918 | 13 28 49. 331 | -0 59 25.587 |— 0.017 NORMAL EQUATIONS. ‘ a. a Assuming a’ —-+1.406-+ da’ circle W. { o= + 0.087 + 1.793 da’ + 0.790 dc + 0.502 d¢ | whence da’ = —o0. 092 a’ —+0.806+ da’ “ E, — 0.079 + 2.275 da’//— 1.959 dc + 0. 103 d¢ da’? = + 0, 108 c =+0. 643+ dc “ E. — 0, 683 + 0. 790 da’ — 1.959 da’’ + 11. 580 dc — 1. 208 d¢ dc =+ 0.086 AT =— 0b 59™ 259.624 + d¢ — 0.007 + 0, 502 da’ + 0. 103 da’/ — 1. 208 dc + 7.077 d¢ é¢ =-+0,021 a/ = + 18.314 (circle west); «// = -+ 08.914 (circle east); ¢ == 0%.729 (+ with circle E.). Chronometer No. 1527, at 13 15™.2 chron. time, 04 59™ 258%.604 + 08.013, fast; gaining o*.129 per hour. CHRONOMETER COMPARISONS. 11959 D L——11 82 Time signals received at Vera Crus in the comparison between the Galveston and Vera Cruz chronometers. TELEGRAPHIC DETERMINATION OF LONGITUDES Signals sent from Signals received at Date. Galveston. Vera Cruz. Difference. uv. Chron, No. 1295. | Chron. No. 1470. i | 1883. Ae me os, A, oom Ss Reg ts BS sf March 31 Ir 1 17.50 16 5 24.62 5 4&7 2 0.01 | 24. 27 31. 38 7.11 . 00 29. 63 36. 71 7.08 -03 34. 64 41.73 7.09 |*° .02 I 41.40 5 48.50 7.10 . Ol 3 34.83 7 41.94 7.1L 00 39. 82 46.95 7.13 . 02 44. 16 51. 25 7.09 | 02 48.58 7 55.70 7.12 - Or 3. 53-14 8 0.23 7.09 . 02 4 27.27 34. 39 7.12 Or 31. 98 39. 09 7.11 . 00 36. 28 43.40 7.12 .O1 40. 99 48. 10 7.11 . 00 4 45.18 52. 26 7.08 . 03 5 12.12 Ig. 20 7.08 .03 15.47 22. 60 7.13 . 02 19. 18 26. 28 7.10 OI 22. 90 30. 03 713 02 26. 35 33-44 7.09 . 02 Ir 5 29,88 16 g 37.03 5 4 7.15 . 04 Mean difference, 21 signals 5 4 7.108) =o. 004 April 1 10 31 11.60 15 35 18.41 5 4 6.81 0. 03 16. 53 23.39 6. 86 . 02 20. 36 27,22 6. 86 . 02 26. 00 32. 89 6. 89 . 05 31. 08 37.90 6. 82 .02 35.78 42. 60 | 6. 82 . 02 31 40.20 35 47.04 6. 84 . 00 33. «17. 68 37 24.55 6. 87 - 03 20. 55 27. 36 6. 81 . 03 24. 66 31.50 6. 84 .00 28. 18 35-00 6. 82 02 31. 65 38. 49 6. 84 . 00 35-75 42.59 6. 84 . 00 33 39-74 37 46.59 , 6. 85 OL 34 24.30 38 31.15 6. 85 .O1 27. 38 34. 25 6. 87 . 03 30. 95 37-79 6. 84 . 00 34. 00 40. 87 6, 87 03 |! 37-17 44. 03 6. 86 | .02 |! 34 40.60 38 47.40 6. 80 | . 04 35. 9.30 39 «16.19 6. 89 . 05 13. 23 20. 10 6. 87 -03 17.37 24. 20 6. 83 . OI 20. 93 27.74 6. 81 . 03 24. 58 31. 43 6. 85 .O1 10 35 29.82 15 39 36.66 5 4 «(6.84 . 00 Mean difference, 26 signals . . . 5 4 «6. 844 0. 003}! April 6 | Signals sent from Signals received at | Galveston. Vera Cruz. Difference. a Chron. No. 1295. | Chron. No. 1470. | A. om S. | hem. 5% hom. Se s 10 40 7.18 15 44 14.10 5 4 6.92 0, 00 12. 80 19. 72 6. 92 . 00 19. 29 26. 25 6. 96 04 23. 00 30. 00 7.00 08 26.74 33. 61 6. 87 05 30. 94 37. 80 6. 86 . 06 34-51 41. 35 6. 84 . 08 40 38.41 44 45.27 6. 86 . 06 4I 47. 65 45 54.59 6. 94 02 41 50. 68 45 57.60 6, 92 .00 42 7.35 46 14.29 6. 94 02 10. 94 17. 86 6. 92 . 00 14.55 21.50 6.95 03 17. 66 24. 56 6. 90 .02 42 20.89 46 27.81 6. 92 . 00 42 50.18 46 57.10 6. 92 . 00 54. 00 47 1.02 7.02 10 42 58.25. 5.21 6. 96 . 04 43. 1.70 8. 60 6. go 02 43. 5.18 47 12.12! 6. 94 02 43. 41.80 47 48.71 6. 91 Or 44. 60 51.51 6. gI .O1 48. 68 55. 60 j 6. 92 co 52.45 47 59. 38 6.93 .O1 43 56.60 48 3.54 6. 94 02 10 44 0.85 15 48 7.82 5 4 6.97 105 Mean difference, 26 signals . 5 4 6.921] +o. 005 Ir 6 57.98 16 Ir 5.75 5 od 77 oO, OL F272 10, 42 7.70 . 06 6. 18 14.00 7.82 . 06 g. 80 17. 60 7. 80 04 13. 30 21. 08 7.78 . O02 16. 74 24. 50 7.76 . 00 20. 09 27. 89 7.80 . O04 7 23.61 II 31.39 7.78 02 GQ B75 13 10.52 97 Ol 5.78 13. 48 7.70 . 06 8.90 16. 65 775 . Ol 11. 69 19. 46 7-77 .Or 15.00 22.77 WAT Ol 17.94 25.70 7-76 .00 20. 98 28.71 Wes 03 24. 00 31.74 7-74 02 26. 97 34. 80 7.83 . 07 30. 19 37.97 7.78 . 02 33. 40 41. 20 7.80 04 9 36.72 13 44.48 7.76 00 10 4.20 14 11.95 7.75 .O1 7.09 14. 86 7.77 Ol II IQ 10,00 | 16 14 17.80: 5 4 7.80 . OF IN MEXICO AND CENTRAL AND SOUTH AMERICA. Time signals recetved at Vera Crus in the comparison between the Galveston and Vera Crus chronometers—Continued, Signals sent from | Signals received at : ‘ ! Signals sent from | Signals received at Date. Galveston. | Vera Cruz. : Difference. a, b Date. | Galveston. Vera Cruz. Difference. Chron. No. 1295. Chron, No. 1470. ; Chron. No. 1295. | Chron. No. 1470. Se ee a ee ee =e 1883. Ae om. S. | hem, . |) Am ss. s. |) 1883. Ae Me he the de he he Se April 6! Ir 10 13.00 16 14 20,80 ! 5 4 7.80 0. 04 } April 9 II I2 35.19 ; | 16. 04 | 23.85 7.81 .05 39. 22 16 16 47.79 5 4 8.57 18. 95 26.70 7.75 _ Or 42. 38 50. 90 8.51 21.90 | 29. 70 7. 80 O04 45.59 54. 20 8.61 24. 85 32. 60 7.75 .OI 48.70 16 57.22 8.52 27.72 | 35. 46 7.74 . 02 _ 51.70 17 0,28 8.58 30. 89 38. 62 793 03 54.95 3.45 8.50 Io 33.89 | 14 41.64 | Tis TS .O1 Il 12 58.15 16 17 6.69 5 4 8.54 | II 10, 00 15 17.82 7.82 | . 06 di ay we ee a ame) sey | 13.00 | 20. 79 7-79 | 03 44.59 53.20 8.61 . 109! 23.70 | Eft | +95 47. 62 56. 22 8. 60 18.74 26.44 7.70 +06 50. 47 17 59.10 8. 63 Bh 29,63 7:73 "3 53-16 18 1.68 8. 52 24. 62 | 32:37 Wits . OL 56.03 4. 62 8.59 | ayroe 35-27 | gk re 13° 59. 13 7.70 8.57 30,60 38:32 7.72 coe 14 2.44 11.05 8. 61 33. 62 41. 31 7. 69 .O7 5.78 14. 37 8.59 36. 57 44. 30 7-73 .07 8.97 17.50 8.53 sp. 82 47. 38 7.76 On 11.95 20. 48 8. 53 Ir 11 42.80 16 15 50.50 5 4 7.70 . 06 14.99 23.51 8.52 Mean difference, 43 signals 5 4 7.760; +0, 004 | 17. 85 26. 39 8.54 April 9 | Ir 9g 56.65 16 14 5.20 oa 4 8.55 | 0. or |! tee oa A - oe 9 59-74 8. 27 8.53 03 II 14 24.31 16 18 32.85 5 4 . 54 | 10 63.60 12. 20 8. 60 04 Mean difference, 51 signals... 5 4 8.563 6.72 15629 8.53 03 |) April 1 Il 52 48.22 16 56 57.48 5 4 9.26 9. 73 18. 27 8.54 .02 51.51 57. 0.73 9. 22 12. 69 21. 26 8.57 OL $8.72 6 9. 24 15. 67 2424 B35 ron 52 59.00 8. 28 g. 28 18. 48 27. 04 8.56 #00 53. «2.82 12,02 9. 20 ‘21.90 3°. 47 8.57 uo} 6.40 15.62 9. 22 02 25700 Lae OP 8,60 04: 9.79 19.00 9.21 03 28. 29 36. 84 ae HO} 13.19 22. 45 9. 26 02 11 31.70 40. 27 8.57 -O1 16.44 25.71 9.27 £03 bd 11.00 19.55 | 8.55 . Ol 19. 83 29.07 9. 24 +00 13.74 22, 28 8.54 . 02 23. 31 32.58 9. 27 03 16.79 25. 39 8. 60 . 04 26. 93 36. 10 9.17 .07 19, 62 28.22 8. 60 | . O04 30. 41 39. 63 g. 22 02 22, 62 31. 20 8.58 702 Il §3 33.62 42.85 9. 23 .O1 25.70 34. 23 BSS ae Il 54 16.00 25. 25 9. 25 .O1 28. 68 37-25 8.57 Or 19. 43 28. 66 9. 23 .O1 31.79 40. 35 8. 56 -00 22. 44 31.70 g. 26 02 34-94 43. 46 8.52 704, 25.79 35.00 g. 21 £03 37-71 46. 30 8.59 #03 29. 40 38. 65 9.25 .Ol 40. 76 49. 31 8.55 Ol 32.90 42.07 9.17 .O7 | 43. 58 52515 8.57 Or 36. 30 45.54 9. 24 .00 II 46. 31 54. 87 8. 56 00 40. 00 49. 20 9. 20 04 Il 12 22.20 16 16 30.76 5 4 8.56 00 43.18 52.44 9. 26 02 25. 64 34. 20 8.56 . 00 46, 21 55-45 9. 24 28, 80 37.40 8. 60 O04 50. 31 16 58 59.57 5 4 «9.26 | 11 12 31.70 16 16 40,30 5 4 8.60 . 04 Ir 54 53.68 84 Time signals received at Vera Crus in the comparison between the Galveston and Vera Cruz chronometers—Continued. TELEGRAPHIC DETERMINATION OF LONGITUDES Signals sent from | Signals received at ! Signals sent from | Signals received at Date. Galveston. Vera Cruz. Difference. a. Date. Vera Cruz. Vera Cruz. Difference. v Chron. No. 1295. | Chron. No. 1470. Chron. No. 1295. | Chron. No. 1470. 1883. he om. se Ah. om. 5 hem. S. 1883. hem. he me hom. Ss. April 11 II 55 26,00 16 59 35.21 5 4. 9.21 .03 |) April ir Ir 56 6.33 17 0 15.59 5 4 9.26 02 30. 19 39. 41 9. 22 . 02 11 56 9.72 17. 0 19,00 5 4. «9.28 . 04 33:99 43-27 9. 28 24, Il 56 33.57 17. 0 42.80 5 4 9.23 .Or gee 47:00 28 cod 36. 78 46. 00 g. 22 .02 anne 5°. 49 get 03 40. 89 50. 08 9.19 05 ars? 53-83 oes ee 44. 48 53-75 9.27 .03 48.08 1 38° 27-20 ae 03 47. 81 O 57.04 9. 23 OI 51. 39 17. 0 0.60 g. 21 . 03 51.27 I 0.50 9.23 5 54. 65 3.90 9. 25 - Or 54.90 4.00 9. 10 14 BS Bae e23 9-27 “93 11 56 58.40] 17 1 7.70| § 4 9.30 06 Ir 56 2.78 17. O 12.00 5 4 9.22 02 Mean difference, 46 signals . 5 4. 9.235] 0.004 Time signals received at Valparaiso in the comparison between the Arica and Valparaiso chronometers. Signals sent from | Signals received at Signals sent from | Signals received at Date. Arica. Valparaiso. Difference. uv Date. Arica. Valparaiso. Difference. U, Chron. No. 1295. | Chron. No. 1254. Chron. No. 1295. | Chron. No. 1254. 1883. hom Ss. he mS. he ms, i 1883. A, Mm. o. A. om. S. hom Ss. S. Nov. 13 3 18 0.90 2 55 28.36 O 22 32.54 0.05 || Nov. 13 3 19 38.44 2 57 5.90 O 22 32.54 0. 05 3. 80 31. 22 32.58. .O1 40. 76 8. 20 32. 56 .03 6. 80 34. 22 32. 58 OI 43-59 11,00 32. 59 00 9. 69 37.10 32.59 . 00 46. 40 13. 81 32.59 . 00 12. 60 40. 00 32. 60 .Or 49. 24 16. 66 32. 58 . Or 15.51 42. 91 32. 60 .Or 52. 30 19. 72 32. 58 .or 18. 40 45. 80 32. 60 . Or 55-34 22. 71 32. 63 . 04 21.40 48. 82 32. 58 . 02 Ig 58.30 25. 69 32. 61 . 02 24. 36 51.76 32. 60 .Or 20 «1.03 28. 45 32. 58 .O1 26. 98 : 54. 40 32. 58 .O1 4.12 31.53 32. 59 . 00 29. 72 57-14 32. 58 . Or 6. 80 34. 18 32. 62 +03 32.59 56 0.00 32.59 . 00 9. 59 37.00 32. 59 . 00 35-55 2. 98 32.57 - 02 12.60 40. 00 32. 60 . OI 38. 50 5.88 32. 62 -03 15.44 42. 85 32.59 . 00 | 3 18 40.98 2 56 8.45 O 22 32.53 . 06 3 20 18.15 2 57 45.58 O 22 32.57 - 02 | 3 18 48.64 2 56 16.14 O 22 32.50 . O09 3. 20 23. 84 2-57 51.32 O 22 32.52 .0F | 51. 65 Ig. 00 32. 65 . 06 26. 68 54. 00 32. 68 09 ! 54.50 21.92 32. 58 . Or 29. 33 56.74 32.59 . 00 | 18 57.43 24. 87 32. 56 .03 31. 89 57 59.30 32.57 -02 19 0.40 27. 81 32.59 - 00 34-59 58 1.98 32. 61 . 02 | 3:43 30. 83 32. 60 .O1 37-50 4.90 32. 60 .O1 | 6.41 33. 87 32. 54 .05 40. 49 7.90 32.59 . 00 : 9. 40 36. 81 32.59 . 00 43-44 10. 84 32. 60 .O1 | 12. 45 39. 84 32. 61 . 02 46. 30 13.71 32.59 00 \ 15. 46 42. 85 32. 61 .02 49.44 16. 88 32. 56 .03 . 18. 34 45-75 32.59 . 00 52. 50 19. 81 32. 69 .10 | 21. 30 48. 70 32. 60 .O1 55.40 22. 81 32. 59 00 | 24. 64 52. 00 32. 64 05 20 58.49 25.90 32. 59 . 00 | 27. 30 54.77 © 22 32.53 - 06 | 21 1.55 28. 94 32. 61 . 02 3 19 29.14 2 56 57.20! 3 21 4.57 2 58 31.95 O 22 32.62 03 IN MEXICO AND CENTRAL AND SOUTH AMERICA. 85 Time signals received at Valparaiso in the comparison between the Arica and Valparaiso chronometers—Continued, Signals sent from Signals received at Signals sent from | Signals received at | Date. Arica. Valparaiso. | Difference. a Date. Arica. Valparaiso. Difference. v. Chron. No. 1295. | Chron. No. 1254. Chron. No, 1295. Chron. No. 1254. | See eo ee ere eee Ek, $e tn) ee = 1883. hom os Am S. 1883. Ao oe Re ths oe iy, Ss. Nov. 13 3 21 «9.74 2 58 37.23 © 22 32.51 0. 08 || Nov. 14 3 20 43.80 | 2 58 11.50 O 22 32,30 0, 02 12. 61 40. 00 ° 32. 61 - 02 46. 67 : 14. 39 32. 28 . 04 15.70 43.14 | 32. 86 03 49. 67 | 17. 36 32. 31 . OF 18. 70 46. 10 | 32. 60 Or 52.59 | 20. 28 32. 31 . Or 21.65 49. 00 32. 65 . 06 | 55-49 | 23.10 32. 39 .O7 24. 44 51. 84 32. 60 Or 58. 39 . 26. 00 32. 39 .O7 27.50 54. 90 i 32. 60 .O1 21 1.35 29. 00 32. 35 03 \ 30. 60 58 58.00 32. 60 .O1 4. 38 | 32. 00 32. 38 05 33.71 59 ~=«1.10 32. 60 .O1 7.28 | 34-93 32. 35 -03 36. 70 4. 10 32. 60 .O1 9.92 37. 61 32. 31 .O1 40. 39 7.80 32.59 . 00 3 21 +12.50 | 2 58 40.20 0 22 32.30 | - 02 | 43-38 1OE79 32.59 O89 3. 21 «20.41 2 §8 48.06, 0 22 32.35 - 03 46. 45 13. 84 32. 61 02 23. 30 ! 51.00 32. 30 oO ta 49-59 1300 32.59 nee 26. 44 | 54. 00 32. 44 ~ 12 3 21 «52.89 2 59 20.30 O 22 32.59 . 00 29. 52 | 58 57.20 32. 32 00 Mean difference, 74 signals . ¢ O 22 32.590] -k0, 002 32. 37 59 «(0.03 32. 34 . 02 Nov. 14 | 3 18 54.54 2 56 22.24 O 22 32.30 0. 02 35-44 3.10 32. 34 . 02 56. 94 24. 69 32. 25 .07 38. 39 : nis 3-39 sa | 66d ie 32.32 356 41.47 | 9. 10 32. 37 05 19 2.73 | 30. 50 32. 23 09 44-49 | aot 32:30 a 5.53 33. 26 32.27 05 ’ 47. 33 | 15.00 32. 33 Or $46 46.06 $8. 40 08 50. 23 | 17. 92 32. 31 Ol 11,39 B90 ve 08 53. 30 21.00 32. 30 02 wae gavce sae 08 56. 24 24. 00 32. 24 . 08 G05 4478 42.31 as 21 59.40 27.05 32. 35 03 iia i 48.35 .o7 BB. 2293 2 59 30.40 O 22 32.33 OI 23.39 51.00 32. 39 .O7 3 22 «+'I1.40 2 59 39-14 O 22 32.26 . 06 i 26. 40 54. 10 32. 30 . 02 13. 80 | 41. 52 32. 28 - 04 | 29. 49 56 57.20 32. 29 .03 16. 60 | 44. 32 32. 28 . 04 | 32. 34 57. 0.00 32. 34 02 19. 59 47. 29 32. 30 02 3 19 35.40 2 57 3.00 O 22 32.40 . 08 22. 63 50. 36 32027 05 3 I9 43.46 2 57 #%I1.17 O 22 32.29 . 03 25-59 53-29 3?- 30 B02 4g.61 14. 40 32.31 “Ge | 28.53 56. 22 32. 31 . OI : 48. 47 16. 12 32. 35 .03 3T 30 2 39 39:00 32. 30 a8 aie vices 32.31 ae : 34. 40 3 O 2.00 32. 40 . 08 54. 67 ee 32.27 05 37. 40 5.00 32. 40 . 08 . 19 58.55 26. 30 32, 25 .07 ee B20 32. 35 *93 Be. Gla seo ee a 43-50 II, 20 32. 30 . 02 46. 39 + 14. 00 32. 39 .07 3.78 31.49 32. 29 - 03 ae ven 42. 30 a 49: 33 | 17. 00 32. 33 .O1 6/30 sees x6 “ee 3 22 52.70 | 3. 0 +20.35 | O 22 32.35 03 12. 40 40. 00 32. 40 . 08 Mean difference, 75 signals ; O 22 32.321; -ko.004 | 15. 30 43. 00 32. 30 -02 || Nov. 16 3 32 «12.98 3. 9 41.69} 0 22 31.29 0, OF 18. 50 46. 19 32. 31 Ok 15. 60 44. 31 31. 29 OL, 21.55 49. 23 32. 32 0 18. 36 47.00. 31. 36 .08 3.20 24.51 2 57 52.21 0 22 32.30 02 20. 53 49. 26 31.27 Or | 3 20 33.58 2 58 1.32 © 22 32.26 . 06 23. 03 51.44 Ba ; 35. 81 3.58 32. 23 09 25.44 54. 18 31. 26 ey 38.47 6. 16 32. 31 Ol, 27.50 56. 25 31. 25 03 | 3 20 41.20 2 58 8.93| oO 22 32.27 05 | 3 32 30. 26 3. 9 58.96, © 22 31.30 02 86 | Signals sent from , Signals received at Arica. Chron. No. 1295. : Chron. No, 1254. Date. | . 1883, Noy. 16 | TELEGRAPHIC DETERMINATION OF LONGITUDES Lime signals received at Valparaiso in the comparison between the Arica and Valparaiso chronometers-—Continued, A. 3 WM, 32 32 32 32 3 33 3 33 3 33 34 34 35 Ss. B35 34- 36. 39. 42. 45. 47. 54. 56. 59. “10. 12. 16. 19. 22% 25. 28. 31. 34- 46. 48. 50. 52. 55- 57- 59. 8: 10. 12. 15. 24. 26. 28, 31. 34- 37- 39- 41. 44. 46. 49. 52. 55- 58. I, 37 60 go 60 36 22 62 32 Valparaiso. h. a 0 es ee Io Io Il Il II II Il Il 12 I2 ML, So I. 3: Si 8. Il. 13. 16 23. 25. 27. 30. 33- 36. 38. 41. 45. 48. SI. 54. 57. oO. 35 Il, 13. 15. 17. 19. 21. 2% 26. 28. 31. 34- 36. 39. 41. 44. 53- 55 57- O. 3 6 Io 94 40 31 33 81 47 27 00 97 60 {ole} 00 {ole} 06 II 08 00 16 31 41 46 51 96 06 16 co 95 20 41 16 32 39 60 . 30 19 . 10 8.50 . OI 13. 15. 18. 21s 24. 26. 30. 31 00 00 96 00 10» 3r | 66 | 23° Difference. Us, Pik; 40 : . 26 . Or 04 . 09 . 02 , 00 .06 05 . 06 .O1 OI OI 03 . 03 03 . 02 . 02 . OI 02 . Or . OI 03 .07 09 . 06 .O2 -03 .O1 . 00 .03 - OO .Or Or 05 - OI . 02 .O1 . 00 O02 .02 02 .08 05 .10 LI . 06 . 00 .Or 04 OT |! Nov. 17 ' Signals sent from Signals received at Arica. Valparaiso. Difference. | wv, | Chron. No. 1295. | Chron. No. 1254. A, om. Ss. he hd, ho m Re S. 3.35 11.49 3 12 40.21 0 22 31.28 0. 00 13. 49 42. 43 15.51 44. 22 31. 29 Or 17.54 46. 30 31. 24 04 19. 79 48.50 31. 29 . Or 22. 25 50. 96 31. 29 .Or 24.49 53.21 31. 28 . 00 26. 66 55.39 31.27 .O1 28.79 I2 57.50 31. 29 -O1 31. 48 13 0.20 31. 28 00 33. 65 2. 40 31. 25 03 35. 84 4.55. 31. 29 .O1 38. 38 7.00 31. 38 00 40. 66 9g. 40 31. 26 02 -3. 35 43. 62 3 13 «12.37 O 22 31.25 .03 Mean difference, 73 signals O 22 31.280) 0.003 3 37 «52.48 3 15 21.56 O 22 30.92 0. OI 54. 60 23.71 30. 89 . 04 56.71 25.79 30. 92 .O1 37 58. 84 27.91 30. 93 . 00 38 «1.21 30. 20 31. OL . 08 3-47 32. 49 30. 98 +05 5.52 34. 60 30. 92 .O1 7.53 36. 60 30. 93 - 00 9. 51 38. 56 30. 95 . 02 11.58 40. 63 30. 95 .02 13. 62 42.72 30. 90 - 03 15.57 44. 65 30. 92 . Ol 17. 49 46. 56 30. 93 . 00 19. 50 48. 61 30. 89 04 3. 38 «21.53 3 15 50.58 O 22 30.95 - 02 3 38 29.50 3 15 58.60 O 22 30.90 .03 31. 46 16 0.55 30. 89 04 33-58 2.50 31.08 215 35. 60 4. 68 30. 92 OI 37. 60 6. 61 30. 99 . 06 _ 39.64 8. 64 31.00 .07 41. 56 10. 64 30. 92 .O1 43. 60 12. 64 30. 96 .03 45. 63 14. 69 30. 94 .O1 47.70 16. 76 30. 94 .O1 49. 80 18, 81 30. 99 . 06 51.79 20. 82 30. 97 04 53. 89 22. 98 30. OI .02 55-95 24.99 | 0 22 30.96 03 3 38 58.50 3 16 27.00 , 3 380° 7.35 3. 16 36.44 © 22 30.91 . 02 9-55 38. 62 30. 93 . 00 11. 76 40. 84 30. 92 »OE “14. 40 43.49 30. gI .02 3 386° 19532 3 16 46.36 Oo 22 30.96 . 03 IN MEXICO AND CENTRAL AND SOUTH AMERICA. 87 Lime signals received at Valparaiso in the comparison between the Arica and Valparaiso chronometers—Conlinued. | Signals sent from | Signals received at | ; Signals sent from | Signals received at . Date. | Arica, Valparaiso. | Difference. a. Date. Arica. Valparaiso. Difference. U Chron. No. 1295. | Chron. No. 1254. Chron. No, 1295. | Chron. No. 1254. 1883. | he Hie. 3: he mt. s, Ae Me Se 1883. he mh. he om. 5S. he te 5. S. Novy. 17 3. 39 «20.35 3 16 49.31 O .22 31.04 0.11 || Nov. 17 3. 40 13.30 3 LF 42.37 O 22 30.93 0. 00 22.54 51. 63 30. 91 . 02 16. 39 45.42 30. 97 . 04 24.71 53. 80 30. OI . 02 19. 35 48.47 30. 88 - 05 i 26. 88 55.94 30. 94 .O1 3 40 22.40 3°17 51.46 O 22 30.94 .O1 ! 29. 40 16 58.47 30. 93 . 00 31. 63 17 0.72 30. 91 . 02 3. 40 30.35 ye i 33-83 | 2.93 30. 90 . 03 : 32.49 3 18 1,60 0 22 30.89 - 04 36. 72 5.82 30. 90 03 : 34.41 3.51 30. 90 - 03 i 39. 34 8. 46 30. 88 05 36. 50 5.56 30. 94. Or 3 39 41.61 3 17 «10.73 O 22 30.88 .05 38. 55 7.61 30. 94 .O1 3. 39 46.00 3 17 «15.20 Oo 22 30.80 Re , 40-85 9-54 ae ee 48. 48 17.81 30. 97 04 42.59 us wae a 51.31 20. 39 30. 92 .O1 44-59 43,07 Se? a 5.90 22.77 Songs 00 | 46. 70 15.75 30. 95 .02 56. 4 | ak, 50 40.91 ea! 48, 83 17. 89 30. 94 Ol 59 58. 6y 27.73 eat soil | 51.25 20. 29 30. 96 03 oO BOE 30. 60 40.08 03 | 53- 80 22. 86 30. 94 OF ; << eG 05 ies | 55.72 24. 82 30. go . 03 sag as 40.08 So5 | 40 58. 33 27.37 30. 96 03 2, Br 96 a a0; ee | : 3 41 «0.81 3 18 29. 86 © 22 30.95 . 02 3 40 10.42 3 17 39.50 QO 22 30.92 .O1 | | Mean difference, 73 signals . . O 22 30.933) -ko. 003 Automatic time signals recetved at Valparaiso in the comparison between the Cordoba clock and the Valparaiso chronometer. y i : , Valparaiso chron. é Date. Cordoba clock. . a aes a Difference. Date. Cordoba clock. = a ea. Difference. * i | 1883. hs Wes SS hem. S. he mM. re 1883. Kh Gis, 9s he m. se h. mm. 8: December 7 2 33 1.00 | I 14 50.66 1 18 10.34 December 17 3 12 1,00 I 53 48.46 1 18 12,54 34 1.00 | 15 50. 65 10. 35 13 1.00 54 48.44 12. 56 | 35 2.00 | 16 50.65 10. 35 14 2,00 55 49.45 12.55 | 36 1.00 | 17 50. 64 10. 36 3. 15 3.00 I 56 50.44 1 18 12.56 2-35 2.00 | ee ee | Mean difference, comparison for three minutes. 1 18 12.552 : | = Mean difference, comparison for five minutes .. I 18 10. 352 Hecen beens 3 4 1.00 1 48 45.67 1 18 15.33 5 2.00 46 46. 65 15.35 December 11 | 2 52 1.00! I 33 49.34 1 18 11.66 7 1,00 48 45.66 15. 34 | 53 1.00 34 49. 34 | 11. 66 8 1.00 49 45.67 15. 33 54 1.00 35 49-35 II. 65 10 1.00 51 45. 66 15. 34 | 55 2.00 36 50. 34 11, 66 II 1.00 52 45.64 15. 36 | 2 56 1.00 I 37 49.34 1 18 11,66 3. 12 1.00 I 53 45.63 1 18 15.37 Mean difference, comparison for four minutes . . 1 18 11.658 Mean difference, comparison for eight minutes . . 1 18 15.346 88 TELEGRAPHIC DETERMINATION OF LONGITUDES Lime signals received at Valparaiso in the comparison between the Lima and Valparaiso chronometers. Signals sent from Signals received at Signals sent from | Signals received at Date. Lima. Valparaiso, Difference. uw. Date. Lima. Valparaiso. Difference, uw Chron. No. 1295. | Chron, No. 1254. Chron. No. 1295. | Chron. No. 1254. 1883. Aw mes, a a Re We i Se 1883. A. me S. Am BaD, Bs 5. Dec. 17 204 9.15 I 41 39.15 0 22 30,00 0. 10 || Dec. 17 2 7 8.26 I 44 38.19 O 22 30.07 0. 03 12, 28 42, 21 30. 07 . 03 11,09 41.00 30. 09 .O1 14. 84 44. 81 30. 03 .O7 14. 27 44. 09 30. 18 08 17.49 47.40 30. 09 Ol 17. 21 47.10 30. II Or 20. 00 49. 99 30. O1 . Og 21.00 51.00 30. 00 . 00 22. 80 52. 70 30. 10 . 00 24. 25 54.07 30. 18 . 08 26. 00 55-93 30. 07 03 28. 10 44 57.97 30. 13 - 03 28. 99 41 58.87 30. 12 . 02 31. 29 45 1.19 30. 10 . 00 32. 09 42 1.90 30. 19 09 2 7 35.00 I 45 4.93 0 22 30.07 03 35. 08 4.97 30. 11 Ol 37. 89 7.78 30. II .O1 2 7% 43.27 I 45 13.24 QO 22 30.03 .07 41.17 II. 00 30.17 .07 46. 94 16. 86 30. 08 . 02 44. 00 13. 87 30. 13 03 50. 20 20. 19 30. O1 09 47.00 16, 87 30. 13 .03 54. 28 24. 20 30, 08 . 02 2 4 49.80 I 42 19.71 0 22 30,09 Or 7 57.42 27.31 30. 11 Or 2 5 Oo.16 I 42 30.00 Oo 22 30.16 . 06 By, Sea 3° 32 39-108 202 3. 10 33. 00 30. 10 . 00 3.29 33: 24 39:85 705 6.03 35. 96 30.07 .03 7.19 37. 00 30. 19 09 9. 26 39. 16 aa 16 66 10. 09 40. 00 30. 09 OL ! 12. 19 42. 06 30. 13 +03 Tgrat 43-15 apes 4. | 16. 25 46. 18 30. 07 .03 i 15. 09 44.91 30. 18 - 08 18. 05 47. 89 30. 16 . 06 igre 40n58 JOG, 06 21.19 51.08 30. 11 Or 22. 30 seae 29.90 ag ee 4a 30.13 08 25.19 55-09 30. 10 . 00 27. 28 42 57.16 30. 12 265 > 8 29.18 I 45 59.06 O 22 30.12 . 02 30. 20 43 0.00 30. 20 .10 Mean difference, 75 signals . © 22 30.099} -0. 005 33.22 3. 10 30. 12 02 36. 21 6.13 30. 08 +02 |! Deo. 18 2 8 57.94 1 46 28.48 Oo 22 29. 46 0. 07 39: 49 9. 41 30. 08 . 02 9 0.80 31. 31 29. 49 04 2 5 42.99 I 43 12.91 0 22 30.08 +02 3-95 34- 39 | 29. 56 +03 2 5 52,19 I 43 22.07 | © 22 30.12 02 09 37.48 29. 5% B02 55.20 25.00 30. 20 08 nOnne 45:50 29.53 2100 58. 21 28. 09 30. 12 02 Ete 43°02 29. 56 +03 6 2.10 32. 00 30. 10 . 00 1:36 | 46.71 29.59 +06 5. 22 35. 20 30. 02 08 Bees 49:75 29:59 #03 8. 21 38. 06 30. 15 .05 22529 52. 69 29. 60 .07 11.49 41. 37 30. 12 02 26. 00 56. 40 29. 60 .07 15. 15 45. 00 30. 15 05 29.19 46 59. 60 29.59 . 06 18. 31 48. 20 30. 11 .O1 228. 4702.71 29. 57 - 04 22,00 51.92 30. 08 02 35-29 | 5:77 29. 52 for 25.22 55.07 30. 15 05 38. 20 8. 68 29. 52 .O1 29, £6 43 §9.00 30. 16 a6 2 9 41.12 I 47 11.60 O 22 29.52 -O1 32:20 Hay 2017 39 93 a | 2 9 48.22 I 47 18.80 O 22 29.42 .Il 35-35 5. 24 30. 11 OL \ 51.23 at, 69 29. 84 oe 2 6 39.00 1 44 8.89 Oo 22 30.11 .O1 | er ote 29.40 gle 2 6 49.21 I 44 19.23 Oo 22 29.98 .12 | 2 57.29 27.74 29. 55 . 02 52. 30 22, 24 30. 06 . O4 | Io 0.50 30. 97 29. 53 .00 I 55.31 25. 28 30. 03 .07 | 4.24 34.74 29. 50 03 58. 26 28. 16 30. 10 . 00 7.30 37:74 29. 56 .03 ; 7 2.16 32. 06 30. 10 . 00 | 10. 31 40. 80 * 29, 51 .02 | 2 6 5.24 I 44 35.00 O 22 30.24 14 2 10 13.30 I 47 43.79 Oo 22 29.51 . 02 IN MEXICO AND CENTRAL AND SOUTH AMERICA. 89 Time signals received at Valparaiso in the comparison between the Lima and Valparaiso chronometers—Continued. Signals sent from | Signals received at Signals sent from | Signals received at Date. Lima. Valparaiso. Difference. v. Date. Lima, Valparaiso. Difference. v. Chron. No. 1295. | Chron. No. 1254. Chron, No. 1295. | Chron. No. 1254. : 1883. ho ms. hm 5. Am os. 5. 1883. hom ss. he ms. Ah. mS. 5. Dec. 18 2 10 16.30 I 47 46.76 O 22 29.54 o.o1 || Dec. 18 2 13 0,60 I 50 31.13 O 22 29.47 0, 06 1g. 20 49. 60 29. 60 .07 4-39 34. 88 29.51 -02 22. 21 52. 65 29. 56 .03 2 13 8.30 I 50 38.85 © 22 29.45 08 25°19 55:00 29-59 oe Mean difference, 73 signals . O 22 29.534] -b0.003 27.99 47 58.40 29.59 . 06 2 10 31.11 1 48 1.54 O 22 29.57 -4 |! Dec, 20 1 47 0.03 . — 3.03 I 24 34.57 Oo 22 28.46 0. 09 2 10 39.12 1 48 9.62 0 22 29.50 03 6.15 37.63 28.52 .03 42. 82 13. 30 29. 52 .O1 9.08 40.55 28.53 “oe 45-79 16, 28 29. 51 02 ae 43. 43 28.57 Pe 49. To 19. 52 29. 58 +95 15.00 46. 48 28. 52 03 52-17 22, 67 29. 50 793 18. 25 49. 63 28. 62 07 55- 20 2599 25" a 21.18 52. 60 28. 58 .03 Io 58.20 28. 70 29. 50 . 03 24. 25 55.70 28. 55 "60 II 1.40 31. 80 29. 60 .07 27. 28 24 58.79 28.49 06 out 35. 5° ager oS 30. 30 25 1.66 28. 64 09 8. 16 38. 69 29.47 .06 33-30 4.71 28.59 04 aa 24 41.76 29. 48 | +5 36.19 7.66 28.53 .02 14. 16 44. 62 29. 54 | Or 39. 15 10. 66 |! 28. 49 .06 17. 16 47. 67 29. 49 | +04 I 47 42.24 I 25 13.69} © 22 28.55 00 20. 12 50. 61 29. 51 -02 I 47 51.20 I 25 22.61 oO 22 28.59 - 04 2 IL 23.03 I 48 53.53 0 22 29.50 -03 a ab ee so pe Sag aos 47 58.30 29.72 28.58 03 3500 s teeen 2 ; 48 2,11 33. 46 28. 65 .10 38. 11 1 49 8.54 O 22 29.57' 04 5-99 36. 59 eeSD #03 8.09 39-50 28.59 . 04 ee ee Aen re II. 20 42.59 28. 61 . 06 44. 24 14. 63 29. 61 - 08 es 45 65 es a 47-10 17.51 29. 59 - 06 oe 5635 oi 6 ee 50. 22 20. 61 29. 61 . 08 ri EA oo cae re 53. 26 23. 69 29.57 +04 ee = 7 28.64 a a ei oe seb 26. 20 25 57.60 28. 60 .05 ae ae a a eh 29. 10 26 0.50 28. 60 05 12 3.08 33-50 29. 58 +05 ne ee 56d pa ee py ea20 ap. ae 8 1 48 34.97 I 26 6.30] 0 22 28.67 .12 g. 21 39. 67 29.54 OI 12. 22 42. 68 | 29.54. .O1 1 48 44.18 Ss Alot nares 2 12 15.23 I 49 45-73 © 22 29.50 .03 47.19 r 26 18.61 Oo 22 28.58 .03 50. 20 21.59 28. 61 .06 2 12 23.10 1 49 53-64 0 22 29.46 07 53-20 24. 58 28. 62 -07 27.20 49 57.65 29. 55 .02 56. 22 27.59 28. 63 .08 30. 14 50 0. 64 29. 50 .03 48 59.14 30. 51 28, 63 .08 33. 20 3.72 29.48 05 49 2.04 33-50 28. 54 . OI 36. 19 6, 64 29.55 02 5.13 36. 51 28. 62 .07 39. 26 9.67 29. 59 06 8. 36 39. 80 28.56 -O1 42.18 12.67 29. 51 02 11.39 42. 82 28.57 .02 45.00 15. 45 29.55 02 14. 38 45.82 28. 56 Or 48.29 18.72 29.57 04 17.22 48. 63 28. 59° 04 51.20 21.71 29.49 04 21.21 52. 60 28. 61 06 54.22 24.77 29.45 -08 2S 55-91 at. 54 eet 2 12 57.30 I 50 27. 80| 0 22 29.50 -03 I 49 27.40 I 26 58.92 Oo 22 28.48 .07 11959 D L——12 90 TELEGRAPHIC DETERMINATION OF LONGITUDES Time signals received at Valparaiso in the comparison between the Lima and Valparaiso chronometers—Continued. Signals sent from | Signals received at Signals sent from | Signals received at Date. Lima. Valparaiso. Difference. vw Date, Lima. Valparaiso. Difference. v. Chron. No. 1295. | Chron. No. 1254. Chron. No. 1295. | Chron. No. 1254. 1883. he m. $ he om. e he om. S. Ss. 1883. he m. Ss. A. Mm. s he om. Ss. Ss. Dec. 20 I 49 37-19 I 27 8.71 Oo 22 28.48 .o7 || Dec. 24 2 21 26.85 59 ~=«1. 60 O 22 25.25 0. O1 40. 30 11.72 28.58 -03 30. 46 5.22 25. 24 . 02 44.00 15. 40 28. 60 .05 34. 00 Soi se Be ali he bok 47-23 18..73 28.50 .05 37.20 11. 89 25. 31 05 51.17 22. 60 28.57 .02 41.00 15.73 25.27 OI 55-08 26.57 28.51 .O4 44.27 1g. 00 25.27 . Or 49 58.30 29. 81 28. 49 . 06 47.40 22.14 25. 26 . 00 50 862.20 33- 88 28. 32 .22 51.26 25.96 25. 30 . O04 5-38 36. 83 28.55 . 00 55-23 29. 90 25. 33 .O7 9. 31 40. 70 28. 61 .06 21 59.20 34. 00 25. 20 . 06 13.21 44.72 28. 49 . 06 2 22 3.00 I 59 37-78 O 22 25,22 04 16.30 47-91 28.59 (Oe 2 22 13,22 I 59 47.99 O 22 25.23 03 1g. 25 50. 69 28. 56 OI 16. 32 51.00 25.32 #06 23.19 54.70 28. 49 06 19. 30 54. 00 25. 30 04 I 50 26.25 I 27 57.78 Oo 22 28.47 . 08 Sag 29 1 59 57.00 25. 29 .03 I 50 36.20 1 28 7.70 0 22 28.50 05 25. 30 2 0 0,02 25. 28 «02 39. 22 10. 68 28.54 .O1 28. 30 3.00 25. 30 . 04 42.13 13.60 28.53 .02 31.29 6. 09 25.20 . 06 45-13 16. 61 28. 52 -03 34. 25 8.97 25. 28 -02 49.13 20. 51 28. 62 .07 37. 22 11, 83 25. 28 02 52.14 23. 69 28.45 .10 40. 20 14. 90 25. 30 . 04 55-20 26. 69 28. 51 04 43. 21 18.00 25. 21 05 50 58.23 29.79 28.44 .1I 46. 27 20. 98 25.29 .03 5I 1.40 32. 96 28.44 .It 49. 30 24. 06 25.24 .02 4.22 35.80 28. 42 -13 52. 29 27.00 25.29 . 03 7.23 38.72 28. 51 . 04 2 22 55.35 2 0 30,00 O 22 25.35 09 Ea] 42.65 28. 52 +03 2 23 6.25 2 0 40.96| 0 22 25.29 03 14.13 45. 64 28.49 . 06 Toot 44.99 25. 22 ee 17.12 1 28 48.66 o 22 28.46 09 13. 21 4800 25,21 05 Bo Sh 120520 16, 26 a her cas Sodan bi Mean difference, 72 signals . . Oo 22 28.548] -b0.005 19. 35 oO 54.16 25.21 - 05 22. 39 . Dec. 24 2 20 14.20 I 57 49.00 O 22 25.20 0. 06 25.34 I 0.14 25.20 . 06 17.91 52. 62 25.29 . 03 29. 30 4.09 25. 21 .05 21.00 de Bee ss a Me gee 32. 20 6. 96 25.24 02 24. 90 oy Sonn akh Br Heats ooh . . 35-25 10, 00 25.25 Or 29. 80 pera Se ee Ae ee 38. 35 13. 10 25.25" . Or 33-29 a ee as eo Gey u 4 42. 29 17. 00 25.29 03 36. 29 wag: 1 Pe ae = 46. 31 21.10 25.21 05 39. 22 ie eats at ahiaed air 9 49. 36 24.17 25.19 .O7 42. 90 58 17.64 25. 26 . 00 2 23 53.19 2 1 27.93 Oo 22 25.26 . 00 46. 14 20. 89 2525 POE 2 24 2.20 2 1 37.00] 0 22 25.20 . 06 49. 97 24. 61 25. 36 he 5.21 39. 91 25.30 . 04 53-20 27499 25 3° aoe 8. 29 43.05 25. 24 .02 56. 20 I 58 30.97 O 22 25.23 »03 It. 30 286 28.30 7 20 59. 29 14. 30 49. 00 25. 30 04 2 21 2.29 17. 23 52. 00 25. 23 . 03 2 21 11.27 eh ui: . 20. 25 54.97 25. 28 02 15. 30 1 58 49.98 © 22 25.32 06 23.29 I 58.00 25.29 -03 19. 29 53. 98 25.31 +05 26. 30 2 2 = 1.00 © 22 25.30 . 04 2 21 22,89 1 58 57.61 Oo 22 25.28 - 02 2 24 30.30 z IN MEXICO AND CENTRAL AND SOUTH AMERICA. 91 Time signals received at Valparaiso in the comparison between the Lima and Valparaiso chronometers—Continued. Signals sent from | Signals received at Signals sent from | Signals received at Date. Lima. Valparaiso. Difference. S. Date. Lima. Valparaiso. Difference. uv Chron. No. 1295. | Chron. No. 1254. Chron. No. 1295. | Chron. No. 1254. 1883. ho ms. he om 5 hm Ss. 1883. A, om S ho mS. he mS. 3 Dec. 24 2 24. 34.20 2 2 8.92 O 22 25.28 0.02 || Dec. 26 28 53.21 2 6 28.41 Oo 22 24.80 0. 10 37: 22 12. 00 25. 22 04 56. 29 31. 35 24. 94 O04 40. 80 eo 2.x 28 59. 21 34. 34 24. 87 . 03 44. 20 18. 93 27.27 . Or 29 «2.22 37.40 24. 82 . 08 2 24 47.43 2 2 22.21 O 22 25.22 - 04 5.29 40. 47 24. 82 . 08 Mean difference, 61 signals. . .. O 22 25.262} --0. 004 8. 32 43. 48 24. 34 - 06 11. 26 46. 32 24.94 - O4 Dec. 26 2 26 31.15 2 4 6.35 Oo 22 24.80 0. 10 ia ae 49. 33 24. 89 ais 34, 30 9-49 | age 709 17. 29 52. 39 24. 90 . 00 37-35 Hea? 24: 99 ie 2 29 20,30 z 6 55.40 0 22 24.90 . 00 40. 41 15.56 24. 85 - 05 44. 10 19. 17 24.93 03 2 29 30.30 2 7 5.48 0 22 24.82 . 08 49. 10 24. 24 24. 86 » 04 33. 29 8. 39 24. 90 . 00 53-25 28. 33 24. 92 . 02 36. 28 11. 36 24. 92 . 02 56. 28 31.42 24. 86 04 39. 28 14. 35 24. 93 . 03 26 59. 28 34-33 24.95 -05 42. 30 17. 36 24. 94 . O04 27 3.30 38. 36 24. 94 . 04 45-23 20. 41 24. 82 - 08 7. 28 42. 30 24. 98 . 08 48. 26 23. 38 24. 88 02 II. 23 46. 28 24.95 - 05 51.21 26. 46 24.75 .15 15.23 50. 33 24. 90 . 00 54. 20 29. 37 24. 83 .07 19. 28 54. 31 24.97 .07 29 57.25 32. 35 24. 90 . 00 2 27 23.48 2 4 58.53 O 22 24.95 . 05 30 «0. 58 35. 64 24.94 . 04 2 27 35.29 2 5 10.37 O 22 24.92 - 02 428 39-29 24-95 * 05 4523 42. 50 24.73 .17 38. 35 13.41 24.94 . 04 10. 32 45. 46 24. 86 - O04 41. 39 16. 44 24. 95 05 45.18 20. 30 24. 88 02 2 30 13.29 2 7 48.40 Oo 22 24.89 -O1 49. 24 24. 36 24. 88 .02 2 30 24.29 2 7 59.40 0 22 24.89 . Ol 53-21 28. 30 24. 91 OI 27.25 8 2.34 24. 91 . OI 27 57.22 32. 25 24.97 07 30. 30 5.40 24. 90 00 28 «0. 61 35. 86 24. 75 .15 33-21 8. 30 24. 91 .Or 4. 22 39. 29 24. 93 . 03 36. 24 II. 31 24. 93 . 03 7.40 - 39. 24 14. 32 24. 92 . 02 II. 20 46. 28 24. 92 . 02 42. 24 17. 34 24. 90 00 15. 21 50. 31 24. 90 . 00 46. 31 21. 31 25.00 .10 19. 27 54. 32 24.95 .05 51. 28 26. 41 24. 87 . 03 23. 29 5 58.30 24.99 - 09 30 55-44 30. 47 24.97 -O7 2 28 27.22 2 6 2.29 O 22 24.93 03 31. 0. 58 35-75 24. 83 .07 2 28 38.25 2 6 13.46 O 22 24.79 -1I 5. 32 ao 8 aa: 4 08 9. 39 44. 42 24.97 +07 41. 29 16, 41 24. 88 02 ney ae os = a roy ne _ 2 31 17.30 2 8 52.36 O 22 24.94 - 04 47. 20 22. 36 24. 84 . 06 . 2 28 50.21 2 6 25.39 Oo 22 24.82 . 08 Mean difference, 74 signals. . .. O 22 24.895] 0. 005 92 TELEGRAPHIC DETERMINATION OF LONGITUDES Time signals received at Arica in the comparison between the Paita and Arica chronometers. Signals sent from Signals received at Signals sent from Signals received at Date. Paita. Arica. Difference. UV Date. Paita. Arica. Difference. uv Chron. No. 1295. | Chron. No. 1254. Chron. No. 1295. | Chron. No. 1254. 1884. he mS. hom 5. hom 5s. So 1884. hm S. hem 5. Am Ss. Je Feb. 2 7 17 48.81 6 55 19.60] © 22 29,21 0.13 |) Feb. 2 7 20 49.40 6 58 20.00] 0 22 29.40 0, 06 51.95 22.70 29. 25 0. 09 52. 35 23. 00 29. 35 0. OF 54. 87 25. 61 29. 26 0. 08 55.59 26, 22 29. 37 0.03 17 57.90 28, 56 29.34 | 9.00 20 58.96 29. 62 29. 34 0. 00 18 1.22 31. 89 29. 33 0. O1 21 2,10 32.77 29. 33 0. O1 4. 10 34. 83 29. 27 0. 07 5.58 36. 15 29. 43 0. 09 7.00 37. 69 29. 31 0. 03 8.90 39. 54 29. 36 0. 02 9g. 82 49. 59 29. 23 0. 11 11.90 42. 61 29. 29 0. 05 12. 89 43- 60 29. 29 0. 05 7 21 15.00 6 58 45.71 © 22 29.29 0. 05 15. 85 46.55 29. 30 0. 04 19. 13 49. 80 29. 33 BOT 7 21 27.51 6 58 58.21 © 22 29,30 0. 04 22. 29 52. 90 29. 39 0.05 31.00 59 «1. 64 29. 36 0. 02 25.45 56.07 29. 38 0. 04 34. 36 500 29. 36 0102 28. 74 55 59.37 29. 37 0.03 38. 19 8. 80 29. 39 0.05 7 18 31.70 6 56 2.38] o 22 29.32 0. 02 4t. 30 #199 29. 31 O95 45.00 15. 66 29. 34° 0. 00 7 18 40.48 6 56 11.20 Oo 22 29.28 0. 06 #80 19246 26) 44 65 43.80 ae 29. 30 Cod 51. 80 22. 56 29. 24 0. 10 47-40 18. 07 29. 33 0, O1 54.71 25.35 29. 36 0.02 _ 5°. 59 2 29 29. 30 oe 21 55.72 28. 40 29. 32 0. 02 me aye aa ees 22 0.71 31. 40 29. 31 0. 03 18 57.49 28. 16 29. 30 0. 04 | 3.41 91:08 29. 35 ar a ou? 29. 31 Bee 6. 63 37. 24 29. 39 0. 05 3-85 34-51 29- 34 =e 9. 69 40. 31 29. 38 0. 04 aes gn08 29. 32 eee 7 22 12.80 6 59 43.49 O 22 29.31 0. 03 10. 63 41. 26 29. 37 0. 03 13366 44.29 29. 37 0.03 Mean difference, 74 signals . . 0 22 29.336} 0.004 16.71 47-35 29. 36 0.02 || Feb. 4 7 29 24.00 Bag 19. 69 50. 33 29. 36 0, 02 26. 82 7 6 54.49 O 22 32.33 0, 10 22.41 53-10 29. 31 0. 03 29. 37 57.00 32.37 0. 06 4 19 25.27 6 56 55.91 0 22 29.36 0, 02 32. 10 6 59.79 32. 31 oO. 12 7 19 34-82) 6 57 5.49| © 22 29.33] 0.01 a fee gage) 808 37. 88 : aa 37-49 5.00 32. 49 0. 06 40. 98 11. 66 29. 32 0. 02 40. 50 8.10 32. 40 0. 03 44. 65 15. 24 29. 41 0. 07 seed , 47-99 18. 60 29. 39 0. 05 47.1 14.70 32. 41 0. 02 51.10 21.72 29. 38 0. 04 50. 16 17.73 32. 43 0. 00 54. 25 24. 89 29. 36 6283 53-00 20. 66 32. 34 0. 09 19 57-48 28. 05 29. 43 0. 09 55:85 23. 48 32. 37 0. 06 20 0.52 3I. 21 29. 31 0. 03 29 58.65 26, 23 32. 42 0. OF 3.55 34. 22 29. 33 0. O1 7 30 1.70 7 7 29.29 O 22 32.41 0. 02 6. 49 37-14 29. 35 vee 7 30 12.77 7 7 40.31 | © 22 32.46 0, 03 9-50 4010 20540 9,08 15.91 43. 49 32. 42 0. O1 12. 52 43.10 29. 42 0. 08 ee abe avai aoe 15.76 46. 40 29. 36 ce 22. 08 49.74 32. 34 0.09 7 20 18.93 6 57 49.58 Oo 22 29.35 0. O1 ae. 28 B50 18 eins 7 20 29.96 6 58 0.62 Oo 22 29.34 0, 00 28.55 56.14 32.41 | ~ 0.02 32- 90 3-59 29. 31 0. 03 31. 78 7 59.37 32.41 0. 02 35-98 6. 65 29: 33 0. O1 35-00 8 2.59 32. 41 0. 02 39. 47 10. 10 29. 37 0. 03 38. 18 5.78 32. 40 0. 03 42. 78 13. 40 29. 38 0. 04 41. 00 8. 62 32. 38 0. 05 7 20 45.98 6 58 16.67 oO 22 29.31 0. 03 7 3° 44.00 7 8 11.59 O 22 32.41 9. 02 IN MEXICO AND CENTRAL AND SOUTH AMERICA. Time signals received at Arica in the comparison between the Paita and Arica chronometers—Continued. 93 Signals sent from | Signals received at Signals sent from | Signals received at Date. Paita. Arica. Difference. v Date. Paita. Arica. Difference. wu. Chron. No. 1295. | Chron. No. 1254. Chron. No. 1295. | Chron. No, 1254. 1884. he om 5S. he om. ‘ hom S. Se 1884. he m. se he. Mm. Ss he mM. Ss. 8 Feb. 30 «46. 82 7 8 14.40 22 32.42 0.01 || Feb. 4 7 32 12.07 7 9 39.61 O 22 32.46 0. 03 49. 88 17. 44 32. 44 0. OI 15.00 42. 63 32. 37 0. 06 52. 60 20. 21 32. 39 0. 04 18. 06 45. 60 32. 46 0. 03 7 3° 55.40 7 8 23.00 O 22 32.40 0. 03 21.25 48.79 32. 46 0. 03 7 31 12 7 8 29.71 O 22 32.41 0. 02 ea ot 51.74 32.47 208 4.79 32. 32 32.47 oe 27. 21 54.70 32. 51 0. 08 8506 35. 60 32. 40 0.03 30. 00 9 57-54 32. 46 0. 03 II. 10 38. 74 32. 36 0. 07 ge 7° BO Or AS 32.47 gt 14. 10 4t.71 32. 39 ood 7 32 35.37 7 10 2.90 O 22 32.47 0. 04 16. 86 44. 51 32. 35 0. 08 7 32 44.31 7 10 11.80 © 22 32.51 0. 08 19.75 47. 38 32. 37 0. 06 47. 30 14. 82 32. 48 0. 05 22. 62 50. 20 32. 42 0. O1 49. 81 17.39 32. 42 0. O1 25. 66 53. 20 32. 46 0. 03 53.12 20. 66 32. 46 0, 03 28. 71 56. 27 32.44 0. OL 55.96 23.50 32. 46 0. 03 31. 69 59. 28 32.41 0. 02 32 «58.74 26. 29 32. 45 0. 02 34. 70 2.27 32. 43 0. 00 33.—«r. 78 29. 30 32. 48 0. 05 37. 67 5-24 32. 43 0. 00 4. 33 31.91 32. 42 0. O1 40. 82 8. 37 32. 45 0. 02 7.00 34.57 32. 43 0, 00 7 31 43.90 7 9 11.48 O 22 32.42 0. OI 9.71 37. 27 32. 44 0. O1 7 31 54.00 7 9 21.56 O 22 32.44 0. OL Peet gox08 32-49 208 31 56.96 24. 50 32. 46 0. 03 15:57 43. 00 32-57 Oe NG. 32. 0.19 27.71 32. 48 0. 05 18. 38 45.90 32. 48 0. 05 3.10 30. 69 32. 41 602 21.40 48. 90 32. 50 0. 07 5.91 * 9 43:80 0 22 32.41 S65 7 33 24.80 7 10 52.30 O 22 32.50 0.07 7 32 8.82 Mean difference, 71 signals . . . O 22 32.428] +0. 004 Time signals received at Arica in the comparison between the Paita and Arica chronometers. Signals sent from | Signals received at Signals sent from | Signals received at . Date. ’ Paita.. Arica. Difference. uv. Date. Paita, Arica, Difference. uv. Chron. No. 1684. | Chron. No. 1470. Chron. No. 1684. | Chron. No. 1470. 1884. he mS. he M.S. hem ~~ 5. Se 1884. he Mm. he te Ss. hk. mS. 5. Feb. 4 13 11 8:19 12 51 56.90 Oo Ig I1.29 0.12 || Feb. 4 13 12. 1.09 12 52 49.70 0 Ig 11.39 0. 02 11. 20 51 59.81 II. 39 0. 02 4. 23 52.79 Il. 44 0. 03 14. 10 52 2.72 11. 38 0. 03 6. 89 55.46 II. 43 0. 02 17. 32 m Bugg Ir. 38 0. 03 9. 69 52 58.26 II. 43 0. 02 19. 93 8. 61 IL, 32 0. 09 12.57 53. «+I.12 II. 45 0. 04 22, 81 II. 42 11. 39 0. 02 15. 23 3. 80 Il. 43 0. 02 25.70 14. 38 Il. 32 0. 02 17.90 6. 52 11. 38 0. 03 28. 30 16. 92 Ir. 38 0. 03 20. 50 9. 00 II. 50 0. 0g 31.00 19. 61 II. 39 0, 02 23. 00 II. 65 II. 35 0. 06 33-72 22. 32 II. 40 0. OI 25.91 14. 52 II. 39 0. 02 36. 40 25.00 II. 40 o. OI 28. 38 17. 00 11. 38 0. 03 39.11 27.69 II. 42 0. O1 13 12 30.80 I2 53 19.40 0 19 I1.40 0. OI 41.94 30. 49 TT. 45 O04 13 12 37.74] 12 83 26.39] © 19 11.35 0. 06 44.55 33-19 _ ay 36 0. 05 40, 18 28, 78 II. 40 0. O1 13 Il 47.25 12 52 35.84) @ 19 11.41 OrO9 43. 11 31.70 11. 41 0. 00 13 I 53.08 12 52 41.60 o 19 11.48 0. 07 45.99 34.57 Il. 42 0. O1 55.52 : 44. 18 Il. 34 0. 07 49.05 37. 60 11.45 0. 04 13 11 58.30 12 52 46.85 Oo Ig II.45 0, 04 13 12 51.89 I2 53 40.46 0 19 11.43 0. 02 94 TELEGRAPHIC DETERMINATION OF LONGITUDES Time signals received at Arica in the comparison between the Paita and Arica chronometers—Continued. Signals sent from | Signals received at Signals sent from | Signals received at Date. Paita. Arica. Difference. wv Date. Paita. Arica. Difference. Uv Chron. No. 1684. | Chron. No. 1470. Chron. No, 1684. | Chron. No. 1470. 1884. Am os. Aw ms. Am. S. 1884. A, mS. Am Ss. hm S. Se Feb. 4 13 12 54.80 I2 53 43.40 Oo 19 11.40 0.01 || Feb. 4 13 13 54.28 12 54 42.92 0 19 11.36 0, 05 12 57.61 46. 26 IX. 35 0, 06 13 57.20 45-79 Il. 41 0. 0O 13 0. 48 49. 10 11. 38 0. 03 14 0.12 48. 71 11.41 0. 00 3.35 51.93 II. 42 0. O1 13 14 3.00 12 54 51.64 Oo Ig 11.36 0. 05 6.83 Se TT. 33 oes 13 14 10.99] 12 54 59.64] © 19 11.35 0. 06 8.79 53 57-40 138 OF 02 13.49 55 2.00 II. 49 0. 08 11. 48 54. 0.03 11.45 0. 04 16. 64 5.20 11. 44 0. 03 14. 18 +79 TT. 39 0202 19. 67 8.25 11. 42 0.01 13 13 16.80 12 54 5.41 Oo 19 II.39 0, 02 22. 89 11.50 11.39 Sos 13 13 21.80 I2 54 10.45 Oo I9 11.35 0. 06 aby 32 ta: 89 11.43 nee 24. 70 13. 25 11.45 64 29. 33 17.91 11, 42 0. O1 27.50 16. 00 11.50 0. 09 dente Zone TK 35 pcs 30. 30 18. 90 II. 40 0. OI 35-07 23.05 eae cid 33.48 eis ia 48 0.07 38. 00 26.59 II. 41 0. 00 36. 60 25.15 11. 45 0, 04 ae 29/85 ee 203 39. 76 28. 35 11. 41 0. 00 43. 99 32-55 11-35 ores 42. 76 31. 35 It. 41 0. 00 40.95 35-39 11, 56 O43 45.76 34. 35 11. 41 556 50. 09 38. 64 11.45 0. 04 48. 85 37.44 11,41 ae 13, 14 53-48 12 55 42.00 o Ig 11.48 0. 07 13 13 51.70 12 54 40.33 Oo I9 II.47 0. 06 Mean difference, 75 signals . . oO 19 II1.407/ 0.004 Time signals received at Paita in the comparison between the Panama and Paita chronometers. Signals sent from | Signals received at Signals sent from | Signals received at Date. Panama. Paita. Difference. Vv Date. Panama. Paita. Difference. v. Chron. No. 1295. | Chron. No. 1254. Chron. No. 1295. | Chron. No. 1254. 1884. a ar hm Sy hom 5. a 1884. hem oye hem S, he mS. o- Mar. 7 51 0.49 7 28 19.71 Oo 22 40.78 0. 03 || Mar. 3 7 52 5.30 7 29 24.51 O 22 40.79 0. 04 3.20 22, 42 40. 78 0. 03 7.98 27.18 40. 80 0. 05 5.70 : ee 10. 40 29. 61 40. 79 0. 04 8.50 27.71 40. 79 0. 04 12. 92 32.15 40.77 0. 02 11. 38 30. 59 49. 79 0. 04 15.45 34. 69 40. 76 0. OI 14. 11 33- 30 40. 81 0. 06 17.85 37. 08 40.77 0. 02 16. 89 36. 00 40. 89 0. 14 7 52 20.27 7 29 39.47 O 22 40.80 0. 05 19. 67 38. 87 40. 80 0. 05 22, 32 41. 51 40. 81 0. 06 7 §2 26.42 7 29 45.68] 0 22 40.74 0. O1 24. 98 44. 20 40. 78 9203 28.70 47.90 40. 80 0. 05 27. 62 46. 80 40. 82 0.07 31. 25 50. 50 40.78 ens 30. 20 49. 45 40. 75 e909 33. 80 53.00 40. 80 0. 05 32. 80 52. 00 40. 80 0. 05 36. 32 55. 53 40. 79 0. 04 35-58 54. 76 40. 82 O07 38. 75 29 58.00 40.75 0.00 7 51 38.00 7 28° $7030) & 22 40.78 Q105 41. 30 30 0.53 40. 77 0. 02 7 SI 44.12 7 29 3-40 O 22 40.72 0. 03 43. 88 3.00 40. 88 0. 13 46. 52 5.75 40.77 0. 02 46. 50 5.70 40. 80 0. 05 49. 35 8. 60 40.75 0, 00 49. 00 8. 20, 40. 80 0. 05 51.95 11.19 40. 76 0, O1 51.60 10. 81 40. 79 0. 04 54. 87 14. 00 40. 87 0. 12 54. 10 13. 39 40. 71 0. 04 57.51 16.79 40. 72 0. 03 56. 65 15. 83 40. 82 0. OF 5I 59.99 19. 24 40.75 0. 00 52 59.11 18. 31 40. 80 0.05 7 52 2,60 7 29 «021.80 Oo 22 40.80 0, 05 7 53 «1.60 7 30 20.82 Oo 22 40.78 0. 03 IN MEXICO AND CENTRAL AND SOUTH AMERICA. 95 Time signals received at Paita in the comparison between the Panama and Paita chronometers—Continued. Signals sent from | Signals received at Signals sent from | Signals received at Date. Panama. Paita. Difference. UV. Date. Panama. Paita. Difference. v. Chron. No. 1295. | Chron, No. 1254. Chron, No. 1295. | Chron. No. 1254. 1884. ho ms. Te Wits 8. ho mS. & 1884. A. ms. he ms. ho my. SE Mar 7 53 8.49 7 30 27.77 O 22 40.72 0.03 || Mar. 9 7 17 41.39 6 54 56.07 QO 22 45.32 0. 08 10. 90 30. Io 40. 80 0. 05 44. 60 54 59.38 45.22 0. 02 13. 40 32.59 40. 81 0. 06 47. 21 55 2,00 45.21 0. 03 15. 85 35-05 40. 80 0, 05 49. 61 4.47 45.14 0. 10 18. 42 37. 61 40. 81 0. 06 52. 18 6. 90 45. 28 0, 04 20. gI 40. 10 40. 81 0. 06 55-57 10. 26 45.31 0.07 23.44 42.79 40. 65 0. 10 17 58.51 13. 28 45. 23 0. OI 25.95 45. 29 40. 66 0. 09 18 1.40 16. 20 45. 20 0. 04 28. 29 47.70 40. 59 0. 16 4. 53 19. 29 45. 24 0. 00 30. 64 50. 00 40. 64 oO. 11 7. 68 22. 44 45. 24 0. 00 32. 87 52. 29 40. 59 o. 16 7 18 10.39 6 55 25.16 O 22 45.23 0. OI aaeae 54. 60 40. 68 0. 07 7 18 20.60. 6 §5 35.40] © 22 45.20 0. 04. 37-71 57790 40.78 Or Oa 23. 22 38. 00 45. 22 0. 02 AO AO 30° 58-74 40:08 O10? 26. 00 40. 80 45.20 0. 04 7 53 43.95 7 31 2.46 O 22 40.59 0. 16 28. 58 43. 31 45.27 0.03 7 53 52.80 7 3% 412.41 © 22 40.39 0. 36 31.07 46. 00 45.07 0.17 54. 89 14. 21 40. 68 0. 07 33. 69 48. 41 45. 28 0. 04 53 57-30 16. 76 40. 54 0. 21 36. 30 50. 99 45. 31 0. 07 54 0.00 19. 33 40. 67 0. 08 38. 79 53. 52 45-27 0. 03 2.73 22. 12 40. 51 0. 24 41. 45 56. 21 45. 24 0. 00 5.51 24.74 40.77 0. 02 44. 29 55 59.00 45-29 0. 0§ 8. 60 27.75 40. 85 0. 10 47.16 56 «1.95 45.21 0. 03 12. 00 31. 25 40.75 0, 00 50. 00 4. 80 45. 20 0. 04 14. 69 33-95 40. 74 0. O1 52. 81 7.56 45. 25 0. OL 17.40 36. 65 40. 75 0. 00 55.50 | 10. 27 45. 23 0. OI 20. 23 39. 46 40.77 0, 02 7 18 58.00 6 56 12.90 O 22 45.10 0. 14 22. 76 41. 86 40. 9° OnTS 7 19 3.41 6 56 18.16] © 22 45.25 0. OI ye4 AAAS 40.75 O40 5. 64 20. 43 45. 21 0. 03 27. 80 47.00 40. 80 0. 05 8.15 22. 96 45. 19 0.05 7 54 30.62 7 31 49.89 O 22 40.73 0. 02 10. 56 25. 36 45. 20 0. 04 Mean difference, 74 signals . . . O 22 40.752} -b0.007 12. 96 27.70 45. 26 0. 02 15.70 30. 46 45. 24 0. 00 Mar. 9 7 16 42.35 6 53 57.14 O 22 45.21 0, 03 18, 41 33- 23 45.18 0. 06 45.02 59.79 45-23 0. OI 21.00 35.79 45. 21 0. 03 47. 83 2.59 45. 24 0. 00 23. 88 38. 60 45. 28 0. 04 50. 70 5-43 45.27 0. 03 26. 42 41.17 45. 25 0. OI 53. 83 8.59 45. 24 0. 00 29. 00 43-71 45. 29 0. 05 56. 82 11.59 45. 23 0, OI 31. 60 46. 35 45-25 0. Or 16 59.75 14. 49 45. 26 0. 02 34. 29 49. 07 45. 22 0. 02 17 2.58 17.31 45. 27 0. 03 36. 92 51. 66 45. 26 0. 02 5.58 20. 26 45. 32 0, 08 7 19 39.79 6 56 54.52 O 22 45.27 0. 03 ase 25:20 ab gO}, 88 7 19 47.20| 6 57 1.93| © 22 45.27] 0.03 11. 50 26, 29 45.21 0. 03 49.55 4.41 48.14 10 14.54 29. 28 45.26 ee 51, 82 6. 63 45.19 0. 05 17. 40 32.17 45. 23 0. O1 54. 32 9. 08 45. 24 6:00 20. 29 35.00 45-29 0. 05 56. 72 11. 46 45. 26 0. 02 7 17 23.21 6 54 38.00] O 22 45.21 0. 03 19 §9.20 14.00 45. 20 0. 04 7 17 29.60 6 54 44.41 O 22 45.19 0.05 20 «1.75 16. 50 45.25 0. OL 32. 19 46. 93 45. 26 0, 02 4. 28 19. 00 45. 28 0. 04 35.06 y 49.76 45. 30 0. 06 6. 86 21.60 45. 26 0. 02 7 17 37.83 6 54 52.58] 0 22 45.25 0. OF 7 20 9.35 6 57 24.10] © 22 45.25 0. O1 96 TELEGRAPHIC DETERMINATION OF LONGITUDES Time signals received at Paita in the comparison between the Panama and Paita chronometers—Continued. ° Signals sent from Signals received at Signals sent from Signals received at Date. Panama. Paita. Difference. v. Date. Panama. Paita. Difference. UV Chron. No, 1295. | Chron. No. 1254. Chron. No. 1295. | Chron. No. 1254. 1884. hom Ss. he Mm. Ss Am Ss. ws 1884. hm Ss. Am Ss. hom 3. S Mar. 9 7 20 11.75 6 57 26.56 0 22 45.19 0.05 || Mar. 13 7 36 53.10 14 5.58 22 47.52 0. O1 14. 43 29. 17 45. 26 0. 02 55-90 8. 39 47.51 0. 00 17.12 31. 81 45. 31 0.07 36 58.70 11. 16 47-54 0. 03 19. 59 34. 30 45- 29 9. 05 7 37° «41.49 7 14 13.94 O 22 47.55 0. 04, 7 20 22.15 6 57 36.93 O 22 45.22 0, 02 7 37 10.13 7 14 22.58 0 22 47.55 0,04 Mean difference, 75 signals . oO 22 22 ko, 004] 12, 26 24.77 47.49 0. 02 5 signi 45. 239 14. 53 27.00 47.53 0, 02 Mar. 13 7 34 46.91 7 Il 59.50 O 22 47.41 0. 10 16. 90 29. 36 47.54 0.03 49. 99 12 2.59 47. 40 O11 19. 45 31.91 47.54 0.03 53.08 : 63 47. . 0. 06 21.90 34. 44 47.46 0. 05 55-75 +27 47-4 0. 03 24. 38 36. 84 47.54 0.03 a4 58.49 Bre 47.49 2:92 27.21 39. 69 47.52 0.01 35 9-99 13.49 47-50 Or01 30. 10 42. 58 47.52 0.01 ia 1583 2 a, 32. 93 45-41 47.52 | 0.01 5-75 18. 23 47.52 OFF 35.74 48. 23 47-51 0. 00 ase ie 47. 56 ere 38. 42 50. 90 47.52 0. OI II. 33 = 80 47-53 0. 02 40. 98 53.57 47.41 a6 14. 00 26. 59 47.41 0. 10 6 6 ; Von 43-95 50. 14 47.5 a . 29. e 47-50 ont 7 37. 46.10 7 14 58.61] © 22 47.49 0. 02 19. I. 52 0.01 a oe oS 7 37 52.60 7 15 5.19 O 22 47.41 0. 10 22.15 34. 63 47.52 0. O1 3 ‘ ey) 24.59 37.11 47. 48 0.03 37. 54.80 7-31 47-49 ° 27.32 38 = 9. 73 22.16 47-57 0. 06 4s 58 ; 7 35 30.06 7 12 42.69 © 22 47.37 Oo. 14 12249 24. 82 47 ; : 7 15.12 27.59 47-53 . O2 7 35 38. 75 7 12 51.30 QO 22 47.45 0. 06 17.70 30. 16 47-54 0. 03 4t. a 83 47.49 Ore 20. 50 32. 90 47. 60 0. 09 43. 00 59. 30 47. 5° ee 23. 40 35. 81 47.59 0. 08 4G. 20 12 58.63 47-57 o, 6 26. 00 38. 46 47-54 0. 03 48. 29 st ae 47. - oie 7 38 28.72 7 18 41.15| © 22 47.57 0. 06 0. 61 aE 47. 0. 03 ee i . 79 : ne + : O63 Mean difference, 72 signals . O 22 47.509} 0.004 55-15 7.61 47.54 .0. 03 || Mar, 14 7 36 39.94 7 13 51.70 O 22 48.24 0. 08 57.29 9.79 47.50 0. O1 * 42. 66 54. 40 48. 26 0. 06 35 59-95 12. 43 47.52 0. O1 45. 20 57.00 48. 20 0. 12 360 2.59 15.00 47.59 0. 08 47.72 13 58.48 48. 24 0. 08 5.29 17.70 47-59 0. 08 50. 21 14 2.00 48. 21 0. II 8. 00 20. 49 47.51 0. 00 53-60 5.16 48. 44 0, 12 10. 59 23. 00 47-59 0. 08 36 57.10 8. 80 48. 30 0. 02 13. 22 25.70 47.52 0. OI 37. 0.26 12.00 48. 26- 0. 06 7 36 15.91 7 13 28.49 O 22 47.42 0. 09 3. 80 15. 46 48. 34 0, 02 8.18 s 8. 28 . 0. 7 36 24.35 7 13 36.88 O 22 47.47 0. 04 t 19.90 Ae: 2 O08 12, 20 23. 87 48. 33 0. OF 26. 98 39-45 47.53 0. 02 20; $7 42.08 47.49 as03 16. 49 28. 16 48. 33 0. OL : : ane an — 20. 66 32. 36 48. 30 0. 02 3 24. 48 36. 19 48. 29 0. 03 34. 81 47.35 47.46 0. 05 an <8 $0.60 47.50 Oxi 7 37 28.00 7 14 39.70 Oo 22 48.30 0, 02 39-99 52. 50 47-49 0. 02 7 37 36.16 7 14 48.00] 0 22 48.16 0. 16 42. 50 55.00 47.50 0. OI 38. 94 50. 67 48. 27 0.05 44. 96 13 57-50 47. 46 0. 05 42.73 54. 40 48. 33 0. oI 47. 60 14 0.07 47.53 0. 02 46. 40 14 58.05 48. 35 0. 03 7 36 50.23 7-14 2.70 O 22 47.53 0. 02 7 37 49.87 7 15 1.52 o 22 48.35 9. 03 Time signals received at Paita in the comparison between the Panama and Paita chronometers-—Continued. IN MEXICO AND CENTRAL AND SOUTH AMERICA. 97 Signals sent from Signals received at Signals sent from Signals received at | Date. Panama. Paita. Difference. we Date. Panama. Paita. Difference. us. Chron. No. 1295. | Chron. No. 1254. Chron. No. 1259. | Chron. No, 1254. 1884. hems. hem > a an Ss 1884. hem Ss. hem Ss. Meo Ws 8, S. Mar. 14 37. 53-51 7 15 5.22 O 22 48.29 0. 03 || Mar. 14 7 39 37.92 7 16 49.60 Oo 22 48.32 . OO 37. 57-15 8. 80 48. 35 0. 03 40. 62 52. 30 48. 32 0. 00 38 =0.49 12.11 48. 38 0. 06 43. 69 i. ig be ; 3. 87 15.50 48. 37 0.05 46. 49 16 58.10 48. 39 0.07 7.69 19. 34 48. 35 0. 03 49. 85 17. 1.50 48. 35 0. 03 Il. 10 22.79 48. 31 0. OI 53-23 4.90 48. 33 0. O1 14. 31 25.98 48. 33 0. O1 39 «56.49 8.17 48. 32 0. 00 17.50 29.17 48. 33 0. OI 49 O51 12.16 48. 35 0. 03 20. 72 32. 39 48. 33 0. OI 3.10 14.79 48. 31 0. OI 7 38 24.00 7 15 35.66 Oo 22 48. 34 0. 02 5.96 17.57 48. 39 0.07 7 38 32.80 7 15 44.50 oO 22 48.30 0. 02 FOyOo 28,80 48. 34 Or 2% 35. 60 47.31 48. 29 0.03 7 40 13.39 7 17 25.00 Oo 22 48.39 0. 07 38. 58 50. 21 48. 37 0. 05 7 40 24.19 7 17 35.90 © 22 48.29 0. 03 41.74 53.40 48. 34 0. 02 27.00 38. 68 48. 32 0. 00 45. 38 15 56.97 48. 41 0. 09 29. 90 41. 60 48. 30 0. 02 48. 71 16 0.40 48. 31 0. OI 33-00 44.70 48. 30 0. 02 51.94 3.70 48. 24 0. 08 35-98 47. 66 48. 32 0. 00 55.09 6. 83 48. 26 | 0. 06 38. 87 50. 60 48. 27 0. 05 38 58. 37 10. 00 48. 37 0. 05 41.58 53-20 48. 38 0. 06 39 «=a. 89 13.53 48. 36 0. 04 44. 64 17 56.30 48. 34 0. 02 5.50 17.15 48. 35 0. 03 48. 90 18 0.54 48. 36 0. 04 8. 89 20. 57 48. 32 0. 00 53-19 4. 80 48. 39 0. 07 12. 25 23.92 48. 33 0. OI 57.30 8. 98 48. 32 0. 00 15.49 27. 20 48. 29 0. 03 40 59.69 11. 43 48. 26 0. 06 7 39 18.70 7 16 30.40 0 22 48.30 0. 02 41 2.42 14. 11 48. 31 0. OL 7 39 29.48 7 16 41.20 Oo 22 48.28 0. 04 oP aoa ah: 30 O02 32. 12 43. 87 48. 25 0.07 7 41 10.40 7 18 22.00 Oo 22 48.40 0. 08 7 39 35.20 7 16 46.87 Oo 22 48.33 O. OI Mean difference, 74 signals . 0 22 48.318) +0. 004 Time signals received at Galveston in the comparison between the Vera Cruz and Galveston chronometers. Signals sent from | Signals received at Signals sent from | Signals received at Date. Vera Cruz. Galveston. Difference. uv. Date. Vera Cruz. Galveston. Difference. vw Chron. No. 1470. | Chron. No. 1295. Chron. No, 1470. | Chron. No. 1295. 1883. he mS. A. mM. > h. Se J. 1883. h mS. A mS. hm Sz 85 Mar. 31 16 5 39.30 II 1 32.41 4 6.89 0. 03 || April 1 15 35 21.50 Io 31 14.93 5 4 «(6.57 0. OI 5 45.90 I 39.00 6. 90 0. 04 25.30 18.75 6.55 0. 03 7 44.07 3 37.20 6. 87 0. OI 30. 90 24. 31 6.59 0. OL 48. 69 41. 82 6. 87 0. OI 36. 13 29. 56 6.57 0, O1 52. 90 46. 06 6. 84 0. 02 40. 37 33- 76 6. 61 0. 03 7 57.50 3 50.61 6. 89 0. 03 15 35 44.89 10 31 38.33 5 4 6.56 0, 02 3 37+ 98 oe el 15 37 25.27| 10 33 18.741 5 4 6.53] 0.05 40. 88 34, 02 6. 86 eee 29. 28 22,71 6.57 0. O1 45-31 38. 45 6. 86 O89 32.55 25.96 6.59 0. OL 8 49.90 43.09 6. 81 0. 05 36. 10 29. 57 6.53 0. 05 20. 56 5 13.71 6. 85 0. O1 39.71 33.18 6. 53 0. 05 24. 13 17. 29 6. 84 0. 02 15 37 43-70/ 10 33 37-15; 5 4 6.55 0. 03 27. 61 20. 76 6. 85 Ook 15 38 32.67 10 34 26.06 5 4 6.61 0. 03 31.19 24. 33 6. 86 2209 , 36. 03 * 29. 41 6. 62 0. 04 16 9 34-79 Ir 5 27.94} § 4 6.85 0. O1 39. 07 32.47 6. 60 0. 02 Mean difference, 15 signals. . . 5 4 6,862) +0. 004 42. 34 35-79 6.55 0. 03 15 38 45.881 10 34 39.35! 5 4 6.53 0. 05 11Q0K0 nT. 13 98 TELEGRAPHIC DETERMINATION OF LONGITUDES Time signals received at Galveston in the comparison between the Vera Cruz and Galveston chronometers—Continued. ~ Signals sent from Signals received at Signals sent from Signals received at Date. Vera Cruz. Galveston. Difference. wv, Date. Vera Cruz. Galveston. Difference. uv. Chron. No. 1470. | Chron. No. 1295. Chron. No. 1470. | Chron. No. 1295. 1883. Ams. Ah mS. A. mS S. 1883. he mS he Mt. ss Ah. a vo April 1 15 39 18.37 Io 35 11.78 5 4 6.59 0, o1 || April 6 16 14 13.41 Ir 10 5.86 5 4 7.55 0. 03 22.44 15. 87 6.57 0. OI 16, 21 8.72 7.49 0. 03 25.91 19. 29 6. 62 0. 04 19. 38 11. 87 7.51 0. OL 30. 40 23. 81 6.59 0. O1 22. 37 14.77 7.60 0. 08 15 39 34.35 10 35 27.72 5 4 «6.63 0. 05 25. 20 17. 61 7.59 0. 07 Mean difference, 22 signals . . . 5 4 6.575) ko. 005 28.19 20. 65 7.54 Us02 30. 90 23. 38 7.52 0, 00 April 2 15 44 18.31 Io 40 11.65 5 64~—CO6 66 0. OI 33.90 26.30 7:54 Oree 24. 22 17.59 6.63 6x08 36. 80 29. 30 7.50 0. 02 28.17 21. 44 6.73 68 16 14 39.77 II 10 32.27 5 4 7.50 0, 02 31.76 25.05 6.71 0. 06 16 15 18.85 Il Il 11.35 5 4 7.50 0. 02 35-73 29.07 6. 66 0. O1 22. 05 14. 50 7.55 0. 03 29. 53 32. 85 6. 68 0. 03 24. 84 17. 37 7.47 0. 05 15 44 43.18 Io 40 36.58} 5 4 6.60 0. 05 27. 80 20. 32 7.48 0. 04 15 45 55.80 10 41 49.17 5 4 «6.63 0. 02 gor89 are 7.43 2:09 46 15.92 42 9.29 6. 63 0. 02 33- 56 26. O1 7.55 0. 03 19. 80 13. 18 6. 62 0, 03 26,38 ZBuI68 7.50 O30? : 22. 87 16, 20 6. 67 0. 02 39-46 atGe 7.50 On02 15 46 25.85 IO 42 19.24 5 4 6.61 0. 04 P32 5008 7.49 8103 45. 60 38. 08 7.52 0. 00 15 46 $042 | 30 42 52.78) 5 4 + 6.64 OrQr 16 15 48.70] 411 xr 4na1] 5 4 7.59 0.07 47 3.60 42 56.98 6. 62 0. 03 6.91 Ae Bib 6. 67 Oe Mean difference, 40 signals . . . 5 4 7.515) 0.004 15 47 10.51 Io 43 3.86 5 4. «6.65 0.00 | April 9 16 14 7.00 11 9 58.68 § At Boge — 15 47 49.90 IO 43 43.26 5 4 6.64 0. OI 10. 38 10 2,06 8. 32 0. OI 53.58 46. 93 6. 65 0. 00 13. 65 5-33 8. 32 0. OI 57-56 50. 88 6. 68 0. 03 16. 64 8. 33 8.31 0. 00 1. 67 54.98 6. 69 ©. 04 19. 53 11, 24 8. 29 0.02 15 47 5.48| 10 43 58.82) 5 4 6.66 0. Or 22.55 14. 25 8. 30 0. 01 Mean difference, 21 signals. . . 5 4 6.654) --0. 005 25-40 17.09. 8.31 0. 00 28. 61 20. 29 8. 32 0, O1 31.93 23.59 8. 34 0. 03 April 6 16 mr 8.46 II 7 I.01 5 4 7.45 0. 07 35.03 26. 71 8. 32 0. O1 12. 30 4.74 7.56 0. 04 16 14 38.64 II 10 30.32 5 4 8.32 0. O1 15.91 8.41 7.50 0. 02 16 15 20.61 It Ir 12.30 a a eas 19. 60 12. 08 7:52 0. 00 23. 56 15. 20 8. 36 — aor ee 7-55 vee 26. 50 18. 20 8. 30 0. OL. 26. 29 18. 78 7.51 0. OI 29. 32 21,05 69 oe 30. 00 22. 48 7.52 0. 00 32. 33 24.04 8.29 soe 16 11 36.47 Tr 7 «28.94 5 4 7-53 0. O1 35. 49 a. 8 — eae 16 13 11.84 m9 4.39 5 4 «7-45 0. 07 38. 54 30. 24 8. 30 0. OL 14. 65 7.17 7.48 0. 04 ahad 33- 13 8. 28 0. 03 17.76 10. 24 7.52 0. 00 44. 64 36. 32 8. 32 0. O1 20.55 13. 00 7.55 0. 03 47. 65 39- 31 8. 34 0. 03 23.90 16. 37 7-53 0. OI 50. 30 42. 04 8. 26 0.05 27.00 19. 52 7. 48 0. 04 aS GF U 11 11 44.82) 5 4 8.29 0. 02 29. 97 22.47 7.50 0. 02 16 16 32.53 Il 12 24.26 5 4 8.27 0. 04 32. 80 25. 26 7.54 0. 02 35.71 27.42 8. 29 0. 02 35. 87 28. 39 7.48 dD. 04 38. 67 30. 35 8. 32 0. OI 39. 21 31. 73 7.48 0. 04 42. 42 34. 04 8. 38 0. 07 16 13 42.31 9 34.78; 5 4 7.53 0. O1 16 16 45.91 Ir 12 37.60] § 4 8.31 0. 00 IN MEXICO AND CENTRAL AND SOUTH AMERICA. Time signals received at Galveston in the comparison between the Vera Cruz and Galveston chronometers—Continued. 99 Date. ca ey hae a : Difference. v. Date. Ga © ea Difference Chron. No. 1470. | Chron. No. 1295. Chron. No. 1470. Chron. No. 1295. es e 1883. Am Rooms 8 A. me. 5. 1883. he mt. 5. he mt. d. hm. S. a April 9 16 16 49.23 II 12 40.94 5 4 8.29 0,02 |] April rr 16 58 26.29 Il 54 17.21 5 4. 9.08 0. 08 52. 66 44. 34 8. 32 0. O1 29. 74 20. 75 8.99 0. OL 55. 60 47. 30 8. 30 0. O1 32. 80 23. 81 8.99 0. OI 16 58.60 50. 28 8. 32 0. O1 36. 23 27.22 g. O1 0. O1 17 1.80 53-56 8. 24 0. 07 39. 66 30. 72 8.94 0. 06 16 17 4.94 Il 12 56.69 5 4 8.25 0. 06 43. 16 34. 13 9. 03 0. 03 16 17 51.49 Il 13 43.17 5 4 8.32 O01 46. 70 37.78 8.92 0. 08 54. 38 46. 05 8. 33 0.02 * 50. 49 41. 53 8. 96 0. 04 17 57-33 49. 04 8. 29 0. 03 53. 60 44.59 9.01 0. OI 18 0.23 51.97 8. 26 0. 05 58 57.42 48. 47 8.95 0. 05 | 3. 08 54.75 8. 33 6:63 16 59 1.00 II 54 52.06 5 648. 94 0. 06 i 6, 06 13 57-74 8. 32 0. O1 e i . = : : ; : i. = 16 59 37.59 Il 55 28.67 5 4. 8.92 0. 08 15. 68 738 8. 30 ee 41.47 32. 52 8. 95 0, 05 45. 40 36. 36 g. 04 0, 04 18. 70 10. 40 8. 30 0. O1 48. 83 39. 83 9. 00 0. 00 | 21.69 13. 40 8. 29 O02 51.83 42. 82 g. OI 0. O1 . 24. 61 16. 33 8. 28 0. 03 55.50 46. 45 9. 05 0. 05 | 77-95 igi Ba4 ovat 16 59 58.66 49. 63 9. 03 0. 03 16 18 31.20] 1 14 22.88] 5 4 8.32 0. O1 17 0. 2.22 53.18 9. 04 0. 04 Mean difference, 48 signals. . . . 5 4 8.306) +o. 003 5. 60 55 56.61 8.99 0. O1 April 11 16 56 58.96 II 52 49.94 5 4° 9.02 0. 02 9-59 56 0.57 9702 as 57 2.30 53. 32 8.98 see 13. 48 4.56 8.92 0. 08 6.52 52 57.46 9. 06 O06 17 O 17.00 Ir 56 8.41 5 4 8.89 0.11 10. 43 53 1.39 9. 04 0. 04, 13-79 4-74 9. 05 0. 05 17.05 8.00 9.05 0.05 17 O43. 84 Il 56 34.85 5 4 8.99 0. OI | 20. 78 11.75 9. 03 0.03 ai 07 39103 9508 On04 23. 88 14. 85 9. 03 0.03 5T. 30 42. 34 8.96 0804 | 27.47 18. 47 9.00 6.00 54. 86 45. 82 g. 04 0. 04 30. 80 21. 83 8.97 0.03 O: Seat 49-54 993 9203 | 33- 80 24. 85 8.95 0. 05 bo 2133 53:39 8.94 O06 | 37. 45 28. 48 8.97 0.03 17 r 5.66 Ir 56 56.64 5 4. 9.02 0. 02 | 16 57 40.89 Il 53 31.92 5 4 8.97 0. 03 Mean difference, 43 signals. . .. 5 4 8.996) +0. 005 Time signals received at Arica in the comparison between the Valparaiso and Arica chronometers. ; Signals sent from | Signals received at Signals sent from | Signals received at Date. Valparaiso. Arica. Difference. uv Date. Valparaiso. Arica, Difference. Vv. Chron. No. 1254. | Chron. No. 1295. Chron. No. 1254. | Chron. No. 1295. 1883. A. mS. Ah. mt. Ss A. mt. Ss Je 1883. Bi ts he me Ss. A, mS. 5. Nov. 13 2 50 15.13 12 48.65 O 22 33.52 0.08 || Nov. 13 50 40.98 3 13° «14.58 O 22 33.60 0. 00 18, 30 51.90 33. 60 0, 00 44. 00 17.55 33-55 0. 05 21.00 54.55 33-55 0. 05 46. 99 20. 60 33. 61 0. O1 23. 73 12 57.29 33-56 0. 04 50. 10 23.78 33- 68 0. 08 26.77 13 0.40 33. 63 0. 03 53-18 26. 80 33. 62 0. 02 29. 61 3. 18 33-57 0. 03 2 50 55.97 3. 13° 29.58 O 22 33.61 0. OI 32. 40 5-99 33-59 | 0.01 34.99 8. 66 33. 67 0. 07 2 51 2.60 3. 13 «36.18 22 33.58 0. 02 2 50 37.89 3 13 11,52] 0 22 33.63 0. 03 2 5% 5.71 3 13 39.30 22 33.59 0. O1 100 TELEGRAPHIC DETERMINATION OF LONGITUDES Time signals received at Arica in the comparison between the Valparaiso and Arica chronometers—Continued. i Signals sent from | Signals received at Signals sent from | Signals received at Date. Valparaiso. Arica. Difference. Uv. Date. Valparaiso. Arica. Difference. Uv Chron. No. 1254. | Chron. No. 1295. Chron. No. 1254. | Chron. No. 1295. 1883. oe A mo. S. 1883. Am Ss. hm Ss. hom S. Nov. 13 2 51 9.00 3 13 42.58 0 22 33.58 0. 02 || Nov. 13 2 53 33-53 3°15 7.10 O 22 33.57 0. 03 12.00 45.58 33. 58 0. 02 36. 00 9. 65 33. 65 0. 05 15.00 | 48. 60 33. 60 0. 00 4 38. 56 12. 18 33. 62 0. 02 18.17 | 51. 80 33- 63 0, 03 40. 81 14. 40 33-59 0. O1 21. 42 55-00 33: 58 0, 02 43-23 16. 90 33. 67 0.07 24. 26 13 57.85 33: 59 0. O1 45.72 19. 32 33. 60 0. 00 27.42 14 1.00 33-58 0. 02 2 53 48.15 3 15 21.70 O 22 33.55 0. 05 30-12 3. 80 * 33. 68 0, 08 Mean difference, 75-signals . . . © 22 33.597) -b0. 005 32.75 6. 40 33. 65 0.05 35-49 9. 03 33- 54 0.06 |) Noy, 14 2 52 3.61 3 14 36.96 O 22 33.35 0. O1 37-95 11.60 33-65 Q505 6. 00 39. 21 33. 21 0.13 40. 56 14. 18 33. 62 0. 02 8.96 42. 19 33-23 Ontt 2 51 43.15 3 14, 16.73 0 22 33.58 0. 02 11, 24 44. 51 33.27 0.07 2 51 49.40 3. 14 22.95 O 22 33.55 0. 05 ‘ 14. 00 47. 38 33- 38 0. 04 52.18 25.70 33.52 0. 08 17.09 50. 39 33. 30 0. 04 55-15 28. 76 33. 61 0. OL 20. 20 53-58 33- 38 0. 04 51 57.90 31. 43 33-53 0, 07 22, 52 55-94 33. 42 0. 08 52 0.70 34. 28 33-58 0. 02 24.77 14 58.20 33. 43 0. 09 3-40 | 36. 96 33-56 0. 04 27.11 15 0.54 33-43 0. 09 6. 00 39. 60 33. 60 0. 00 29. 49 2.76 33.27 0. 07 8. 35 42. 00 33- 65 0, 05 31. 88 5.20 33- 32 0, 02 10. 74 44.44 33-70 0. 10 34. 20 7.49 33-29 0. 05 13. 25 46.75 33- 50 0. 10 37. 00 10. 39 33- 39 0. 05 15. 61 49. 21 33- 60 0. 00 2 52 39.84 3 15 13.15 O 22 33.31 0. 03 18.08 Sr 05 33. 65 On 95 2 52 47.38 3 15 20.67 O 22 33.29 0. 05 = = = 14 33: a oO. 2 49.91 23. 24 33-33 Ox ; : 52 0. 08. 2 52 2 69 3 144 a o oO 22 a 0.01 a Bi ee ae 56. 00 29. 40 33-40 0. 06 2 52 32.10 3 15 5.70 0 22 33.60 0. 00 52 58.83 32.12 33-29 0.05 35. 20 8. 80 33- 60 0. 00 53. «OS: CA 34.49 33- 35 0. O1 37. 81 11. 38 33-57 0. 03 3-59 36. 94 33:35 0. OI 40. 63 14. 20 33-57 0. 03 6, 00 39. 40 33. 40 0. 06 43.10 16. 80 33-70 0. 10 8.50 41.71 33-21 0. 13 45-77 19. 34 33-57 0.03 II. 10 44. 42 33- 32 0. 02 48. 40 21.99 33-59 0. O1 13.55 46. 83 33. 28 0. 06 50. 69 24. 30 33. 61 0. O1 15.94 49. 26 33- 32 0. 02 52.95 26. 57 33- 62 0, 02 18. 31 51.58 33-27 0. 07 55-40 28. 94 33-54 0. 06 20. 43 53. 88 33-45 oO. IT 57-55 31.11 33-56 0. 04 |]. 2 53 22.77 3°15 56.11 © 22 33.34 0. 00 52 59-75 33- 33 33-58 O02 2 53 27.51 3 16 1.16] 0 22 33.65 0. 31 53. 2.00 35. 68 33- 68 0. 08 29. 81 ta pies ail 4.46 37-99 33-53 0. 07 32.13 5.46 46.89 ec 2 53 6.75 3. 15 40.31 QO 22 33.56 0, 04 34.40 7.67 ae ones 2 53 13.43 3 15 47,00 | 0 22 33.57 9203 36. 59 9.91 33: 32 0. 02 16, 12 49. 69 33-57 0. 03 38. 90 12. 25 33-35 0. OI 18. 90 52. 39 33-49 0. II 41.00 14. 39 33- 39 0. 05 21.51 55-10 33-59 0. O1 43.40 16. 69 33- 29 0. 05 24. 11 57-60 33-49 oO. 11 45-79 18. 98 33-19 0.15 26. 86 0. 50 33- 64 0..04 48. 42 21.74 33- 32 0. 02 29. 10 2. 98 33- 88 o. 28 50. 94 24. 30 33- 36 0. 02 2 53 31.21 3.15 4.86 QO 22 33.65 0.05 2 53 53-30 3 16 26.59 O 22 33.29 0. 05 Time signals received at Arica in the comparison between the Valparaiso and Arica chronometers—Continued. IN MEXICO AND CENTRAL AND SOUTH AMERICA. 101 Signals sent from | Signals received at Signals sent from | Signals received at Date. Valparaiso. Arica. Difference. Vv. Date. Valparaiso. Arica. Difference. v. Chron, No. 1254. | Chron. No. 1295. Chron. No..1254. | Chron. No. 1295. 1883. | ks ms 8: hom. ss. A. om. Ss. S. 1883. he itt. 8 he my. A. ms. 3 Nov. 14 2 53 55.54 3 16 28.90 O 22 33.36 0.02 || Nov. 16 3 5 33.44 3 28 5.82 O 22 32.38 0.11 57-94 31.20 33. 26 0. 08 36. 00 8. 26 32. 26 Oo. OI 2 54 0.40 3. 16 33.65 O 22 33.25 0, 0g 38. 40 10, 61 32. 21 0. 06 2 54 5.65 3. 16 38.95 0 22 33.30 0.04 40. 81 13. 10 32.29 0, 02 7.97 41. 22 33. 25 0.09 43. 28 15.51 32. 23 0. 04 10. 43 43.72 33. 29 0. 08 45-77 17.99 32. 22 0. 05 12.72 46.09 33. 37 0. 03 48. 22 20. 25 32. 03 0. 24 15.41 48.75 33- 34 0. 00 39: 72 22:99 32.27 , - 17.94 51. 30 33. 36 0. 02 33700 25820 32:29 ; 20, 21 53-53 33+ 32 0. 02 nee 27-54 32, 34 Reed 22.50 55-80 33. 30 0. 04 57. 24 29852 g2:26 Oot 24. 76 16 58.12 33- 36 0. 02 5 59-50 ge 92320 m08 27.13 17 0.48 33- 35 0. OI 6 1.48 33. 78 32. 30 0.03 29. 35 2. 93 33-58 | 0.24 : oan ; 35: 81 us es uw . = 31. 44 4. 85 33. 41 0.07 3 5.59 3 26 37-90 32. 31 04 33-74 7.00 33:26 0. 08 3 6 I1,00 3. 28 43.19 © 22 32.19 0. 08 36. 00 9. 47 33-47 0. 13 13. 20 45-53 321,33 0. 06 2 54 38.56 3.17 «11.89 O 22 33.33 0. OL 15. 21 47.50 32. 29 0. 02 2 54 42.91 3 17 «16.39 oO 22 33.48 0. 14 rae 49: : seya8 O08 45. 40 18.70 33. 30 0. 04 19: . st. 32. 23 od 47.52 20. 84 33532 0. 02 eh 53-79 32-15 Oot 23.78 55-96 32.18 0. 09 49. 84 23. 29 33-45 oO, 11 { 25.89 28 58.11 32. 22 0. 05 ; 52. 20 25.50 33. 30 0, 04 i 4 i F : 0.0) \ 54. 48 27.81 33233 0. OL sl: 22: Ned 3? 34 7 ! 30. 00 2. 26 32. 26 0. OI 56. 74 30. 00 33. 26 0, 08 | 54 58.97 |. 32. 30 33-33 68H 32. 18 4. 43 32. 25 0. 02 34. 11 6. 39 32. 28 0. OI : 55 1.16 34. 50 33- 34 0. 00 | 36. 28 8.50 32, 22 0. 05 3-45 37.00 33-55 O21 — me oe a 5-61 38. 96 33-35 0, OI 3°. 3 "59 32. 23 ne 8.33 41. 60 33-37 0.03 3. 6 40.31 3 29 «12.54 O 22 32.23 0. 04 10, 82 44. 03 33. 21 0. 13 3. 6 45.00 3 29 «17.30 © 22 32.30 0. 03 13.13 46. 44 33-31 0. 03 47.16 19. 58 32. 42 0. 15 2 55 15.48 3 17 48.79 O 22 33.31 0. 03 49. 30 21. 60 32. 30 0. 03 g : 2 0. 0. 1 Mean difference, 75 signals O 22 33.338/ -K0. 006 5154 23-77 ale 4 53. 69 25.90 32. 21 0. 06 , 28. 00 2. 21 0. 06 Nov. 16 3 4 55.30 3.27 + «27.60 0 22 32.30 0. 03 55-79 3 6 58.06 30. 45 32. 39 0. 12 4 58.00 30. 31 32. 31 0, 04 7 0.09 32. 36 32. 27 0. 00 5 0.70 32. 90 32. 20 0.07 2. 00 34. 30 32. 30 0. 03 3.20 35-49 32. 29 0. 02 4. 14 36. 34 32. 20 0. 07 5.79 38. 00 32. 21 0. 06 6, 21 38. 40 32. 19 0. 08 8. 37 40. 57 32. 20 0. 07 ; 8.19 40. 50 32. 31 0. 04 10. 70 42.99 32. 29 0. 02 10, 00 42. 40 32. 40 0. 13 13.00 45. 30 32. 30 0. 03 12. 00 44. 28 32. 28 0. OI oe a ieee ae 14. 00 3. 29 46.40 © 22 32.40 0. 13 17.59 49.90 32.31 | 0.04 eee 19.90 52. 18 32. 28 0. OI 3.7 «18.19 3. 29 50.43 O 22 32.24 0. 03 22, 21 54. 46 32. 25 0. 02 20. 21 52.59 32. 38 | O.11 24.51 56.70 32. 19 0, 08 22, 31 54.50 32.19 0. 08 26. 78 27 59.00 32. 22 0. 05 24. 38 56. 56 32.18 0. 09 3. 5 «28.91 3 28 1.46 O 22 32.55 0, 28 3. 7 «26.37 3 29 58.57 O 22 32.20 0. 07 Time signals received at Arica in the comparison between the Valparaiso and Arica chronometers—Continued. TELEGRAPHIC DETERMINATION OF LONGITUDES Signals sent from Valparaiso. Signals received at Arica. Difference. Signals sent from Signals received at v Valparaiso. Arica. Difference. Chron. No. 1254. | Chron. No. 1295. Chron. No. 1254. | Chron. No. 1295. hom sy he ms. he mS. S. A om. Ss. hom. 2 3s Ss 3.67 «228.44 3 30 077 0 22 32.33 0. 06 3 IL 30.32 3 34 «2.24 31. 92 0, 02 30. 47 2.70 32. 23 0. 04 32. 59 4.47 31. 88 0, 02 32.55 4. 82 32. 27 0. 00 34.77 6. 67 31.90 0, co o 34. 40 6. 85 32.45 0. 18 36. 91 8.77 31. 86 0. 04 36. 42 8.71 32. 29 0702 39. 00 10, 92 31. 92 0. 02 38. 60 10, 90 32. 30 0. 03 41. 21 13. 13 31. 92 0, 02 40. 60 12.90 32. 30 0. 03 43. 36 15. 23 31. 87 0. 03 42. 66 15.00 32. 34 0.07 45-53 17.50 31.97 0. 07 44.90 17. 18 32. 28 0. OL 47. 80 Ig. 69 31. 89 0. O1 3°67 «47.07 3 30 19.46 © 22 32.39 0. 12 49. 92 21.79 31. 87 0. 03 Mean difference, 75 signals . O 22 32.272) 0.006 52. 30 24. 20 31.90 0. 00 3 Il 54.46 3. 34 «26.60 32.14 0. 24 3 10 13.13 3. 32 «45.11 O 22 31.98 0. 08 ae sles Seer) ee 3 11 59.30] 3 34 31-30 31.91 | 9.01 MAG ao 38 31.91 oor 12 1.57 33. 60 32. 03 0.13 19.75 51.62 31. 87 0. 03 3.51 35. 51 32. 00 oa0 21.79 53-70 31.91 0. OI 5.72 37.60 31. 88 eins 23. 86 55.70 31. 84 0. 06 7.88 39. 69 31. 81 0.09 25.90 57-74 31. 84 0. 06 i660 41.99 31. 99 0. 09 27.94 32 59.76 31. 82 0. 08 12, 30 44.19 31. 89 LOR 29. 89 33. «C«d:« 84 31.95 0.05 74,46 46. 29 31.93 0.03 gh. 82 3.76 31. 94 On 16. 61 48. 48 31. 87 0. 03 33. 88 5-74 31, 88 01,08 18, 96 50. 58 31. 62 0, 28 35. 84 7.70 31. 86 0. 04 20.79 52. 67 31. 88 0:03 38. 00 9. 99 31.99 0. 09 22. 98 54.79 31. 81 0. 0g 40. 10 12. 00 31. 90 0. 00 25.00 56.90 31. 90 6x66 3 IO 42.09 3 33 14.00 oO 22 31.91 0. OI 27.14 34 59.10 31.96 6:06 3 10 47.53 3 33 «+%19.44 O 22 31.91 0. OL 3 12 29.20 3 35 ~+«2+'1.00 31. 80 0. 10 49.74 21. 60 31. 86 0. 04 52. 00 23.90 31.90 0. 00 3. 12 34.63 3.35 6.62 31.99 0. 09 54.19 26.17 31. 98 0. 08 36. 63 8.52 31. 89 0. O1 56. 18 28. 08 31.90 0. 00 38. 80 10. 60 31. 80 0. 10 1o 58. 32 30. 19 31. 87 0. 03 41.00 12. 86 31. 86 0. 04 II O51 32. 35 31. 84 0. 06 43.15 15.00 31. 85 0, 05 2. 65 34. 50 31. 85 0. 05 45.09 17.00 31. 91 0. O1 4.59 36. 46 31. 87 0. 03 47. 31° 19. 25 31.94 0. 04 6. 69 38. 54 31. 85 0. 05 49. 28 21.20 31.92 0. 02 8. 82 40. 69 31. 87 0. 03 51.43 23. 32 31. 89 0. OI 11.00 42. 81 31. 81 0. 09 53-57 25.55 31. 98 0. 08 13. 10 45.00 31.90 0. 00 55-93 27. 87 31.94 0. 04 15. 25 47-13 31. 88 0. 02 12 58.25 30. 16 31.91 0. OI 3 11 17.39 3 33 49-22) © 22 31.83 0. 07 13 0.12 32. 10 31.98 0. 08 3 Il 23.00 3 33 54.96 Oo 22 31.96 0. 06 2:21 34. 18 31.97 0. 07 25.50 57-40 31.90 0. 00 3 13 4-49 3 35 36.40 31.91 0. O1 3 Wd 27.88 3 33 59-99 O 22 32.11 Oo. 21 Mean difference, 75 signals . 31.904] 0. 006 IN MEXICO AND CENTRAL AND SOUTH AMERICA. Time signals received at Lima in the comparison between the Valparaiso and Lima chronometers. 103 Signals sent from | Signals received at Signals sent from | Signals received at Date. Valparaiso. Lima. Difference. v. Date. Valparaiso. Lima. Difference. uv, Chron. No. 1254. | Chron. No. 1295. Chron. No. 1254. | Chron. No. 1295. 1883. hom Ss. ho ms. Amy is 1883. he MS Am». h. m. 5. o Dec. 17 I 31 29.19 Dec. 17 I 34 0.80 I 56 32.43 O 22 31.63 0. 02 31. 52 3. 88 35.52 31. 64 0. OL 34. 00 6. 86 38.47 31. 61 0. 04 36. 41 9.75 41. 61 31. 86 0. 21 38. 81 12.59 44. 32 31.73 0. 08 4I. 31 15. 40 47.00 31. 60 0. 05 44.00 17.90 49. 61 31.71 0. 06 46. 76 20. 63 52. 30 31. 67 0. 02 49. 76 I 34 23.33 1 56 54.88 O 22 31.55 0. 10 Sao I 34 29.50 1 57 #+41.13 O 22 31.63 0. 02 55.00 32. 61 4.18 31.57 0. 08 31 57.49 35-31 6. 96 31. 65 0. 00 BB Pee 38. 38 9. 99 31. 61 0. 04 2.31 : a) 4l. 81 13. 39 31.58 0.07 I 32 5.31 I 54 37.09 o 22 31.78 0. 13 a. 94 16. 36 31.59 0.06 I 32 I1.30 nlite 47-59 19.12 | 31. 53 0. 12 14. 12 I 54 45-79 Oo 22 31.67 0. 02 50. 30 21. 88 31. 58 0. 07 17.22 48. 88 31. 66 0. OI 53-10 24.79 31. 69 0. 04 20. 41 52. 00 31.59 0, 06 56. 29 27.89 31. 60 0. 05 23.49 55.10 31. 61 0. 04 34 59.00 30. 72 31.72 0. 07 26. 62 54 58.17 31.55 0. 10 35. «2.00 33- 69 31. 69 0. 04 29. 60 55 1.20 31. 60 0.05 4.78 36. 40 31. 62 0. 03 32. 41 4.16 31.75 0. 10 7.89 39. 40 31.51 0. 14 35.42 7.00 31.58 0. 07 “a 35 10.54 1 57 42.20 O 22 31.66 0. OI 38. 00 9-71 SET 0:06 Mean difference, 56 signals . . . O 22 31.647) -b0.006 40. 68 12. 47 31.79 0. 14 43-37 15.00 31. 63 0. 02 meee ee 46. 05 17.67 31. 62 0.03 38 57.88 2 1 29.19 Oo 22 31.31 0. 20 48. 54 20. 20 31. 76 0. II Ss 31-73 tts ae I 32 51.15 1 5s 22.80] o 22 31.65 ©. 00 3. 5° 34-59 3109 ai 6. 83 37-93 31.10 0. O1 1 32 56.22 ies g. 89 41. 03 31.14 0. 03 32 58.90 I 55 30.68 o 22 31.78 0. 13 12.77 43-87 31. 10 0.01 33 «1.90 15.47 40. 67 31. 20 0. 09 4.90 18. 26 49. 29 31. 03 0. 08 7.98 21.07 52. 19 31.12 0. O1 11.04 42.70 31. 66 0. OL 24.07 55.11 31.04 0.07 14. 41 46. 08 31. 67 2:02 27.07 I 58.08 31.01 0. 10 17. 64 49. 31 31. 67 Ore 30. 19 2 1.21 31. 02 0. 09 20, 67 52. 30 31. 63 0. 02 33.08 4.15 31.07 0. 04 23.44 55. to 31. 66 ocot I 39 36.00 2 2 7.05] © 22 31.05 0. 06 26. 30 55 57-90 31. 60 0. 05 29. 29 56 0.90 31. 61 0. 04 I 39 41.69 2 2 12.81 O 22 31.12 0; O1 32. 19 3.78 31. 59 0. 06 45. 26 16, 42 31.16 0. 05 35.00 6. 64 31. 64 0.01 48. 32 19.55 31. 23 0. 12 I 33 37.66 1 56 9.35 0 22 31.69 0. 04 51.43 22.61 31.18 0. 07 54. 27 25.45 31.18 0. 07 E33 43,81 ei eo) ae oe 39 57-35 28. 52 31.17 0. 06 46. 36 18. 10 31-74 =o 40 0.33 31.43 31.10 0.01 49. 37 21.00 31. 63 0202) 3.57 34. 62 31. 05 0. 06 52.11 23. 68 31.57 0. 08 6. 69 37. 80 31. 11 0. 00 54. 80 26. 40 31. 60 0. 05 9. 67 40. 80 31. 13 0. 02 I 33 57.90 I 56 29.50 OQ 22 31.60 0. 05 I 40 12,62 2 2 43.62 0 22 31.00 oO. 11 104 Time signals received at Lima in the comparison between the Valparaiso and Lima chronometers—Continued, TELEGRAPHIC DETERMINATION OF LONGITUDES Signals sent from Signals received at Signals sent from Signals received at Date. Valparaiso. ‘Lima. Difference. v. Date. Valparaiso. Lima. Difference. v. Chron. No. 1254. | Chron. No. 1295. Chron. No. 1254. | Chron. No, 1295. 1883, A mS. hm 5s. hms. vi 1883. hm. Ss. A mS. ho ms, 5. Dec. 18 1 40 15.06 2 2 46.18| o 22 31.12 0.01 || Dec. 20 I 17 39.00 17. 81 48. 95 31.14 0. 03 41. 87 I 40 12.00 0 22 30.13 0. 03 20. 66 51.73 31.07 0. 04 44.72 14. 84 30. 12 0. 04 T 40 23.53 2 2 54.65 O 22 31.12 0. O1 47.79 18. 00 30. 21 0. 05 I 40 27.62 2B 68.95 O 22 31.11 0. 00 50. 86 20. 96 30. 10 0. 06 30. 48 3 1.61 31. 13 0. 02 54. 00 CAee 30. 00 0. 16 33.11 4.35 3Y. 242 0.13 17 57.14 27. 30 30. 16 0.00 36. 00 7.29 31. 29 o. 18 18 0.54 30. 75 30. 21 0. 05 38. 82 9. 95 31. 13 0. 02 - 00 34-19 30. 19 0. 03 41.52 7-00 37-93 30. 03 0. 13 44.00 |, 15.00 31.00 O.I1 10. 34 40. 49 30. 15 0. oI 46. 60 17.69 31. 09 0.02 13.50 43-74 30. 24 0. 08 49. 40 * 20.41 31. O1 0. 10 16. 75 47.00 30. 25 0. 09 52. 00 23. 10 31. 10 0. oI 19. 78 49. 92 30. 14 0. 02 54.72 25.90 31.18 | 0.07 1 18 22.70 I 40 52.98| 0 22 30.28 0. 12 40 57.49 28. 41 30. 92 0. 19 I 18 29.53 I, 40 59.80 22 30.27 oO. 11 41 0.19 31. 30 31.11 0. 00 32. 98 41 3.18 30. 20 0. 04 2. 89 34. 16 31. 27 0. 16 36. 57 -74 30.17 0. OI I 4r 5.81 2 3 36.89 © 22 31.08 0. 03 39.70 . 85 30. 15 0.01 I 41 11.32 2 3 42.41 © 22 31.09 0. 02 42.75 12. 86 30. 11 0. 05 14. 30 45.50 31. 20 0.09 45. 82 15. 89 30. 07 0, 09 17.40 48. 60 31. 20 0. 09 49508 19.11 30. 11 0. 05 20. 61 51.70 31.09 0.02 52.00 22, 22 30. 22 0. 06 23. 60 54. 69 31.09 0. 02 55-10 25.18 30. 08 0. 08 26. 31 3. 57-44 31. 13 0.02 18 58.00 28.17 30.17 0. OI 28. 99 4 0.10 31.11 0. 00 19 0,85 31.00 30. 15 0. OI 31. 64 2.78 31. 14 0.03 3- 69 33- 83 30. 14 0. 02 34. 52 5.60 31. 08 0.03 6. 40 36. 59 30. 19 0.03 37. 20 8. 30 31. 10 0. O1 9. 16 39. 20 30. 04 0.12 , 39. 82 10. 95 31.13 0.02 TE Ee I 40 42, 22 © 22 30.12 0. 04 42. 56 13. 69 31. 13 0. 02 I 19 17.19 Z 45.22 16. 40 31. 18 0. 07 20. 39 I 41 50.68 QO 22 30.29 0. 13 47. 86 18. 90 31.04 0. 07 23. 80 53. 85 30. 05 0. IT I 41 50. 64 2 4 21.72 O 22 31.08 0. 03 26. 84 41 56.94 30. 10 0. 06 I .41 55.79 2 4 27.00) O 22 31.21 0. 10 3OFO9 42 0.21 30, 21 0. 05 41 58.67 29.75 31.08 0.03 33-55 3.70 30. 15 0. O1 42. «1.52 52.59 31.07 0. 04 36. 80 6. 80 30. 00 0. 16 4.39 35.50 31.11 0. 00 40. 38 . ; ‘ 7-47 38. 50 31.03 0. 08 43-40 13. 48 30. 08 0. 08 10. 61 41. 69 31. 08 0.03 46. 41 16. 51 30. 10 0. 06 13. 60 44. 70 31. 10 0. OI 49. 20 19. 32 30. 02 0.14 16. 69 47.69 31.00 0. 11 52.14 22. 23 30. 09 0. 07 19. 69 50. 70 31.01 0.10 55.26 25. 35 30. 09 0.07 22. 53 53. 60 31.07 0. 04 19 58.00 28.17 30. 17 0, oF 25.70 56.74 31.04 0.07 ¥ 20: 19/89 T 42 31.00) 0 22 30.11 0. 05 28. 52 59. 64 31.12 0. OL I 20 7.50 I 42 37.73 © 22 30.23 0.07 31. 40 5 2.54 3I-I4| 0.03 10. 36 40. 55 — gues 34- 34 5.45 31-11 0. 00 13. 84 44. 00 30. 16 0. 00 I 42 37.06 2. -§ 8.22 O 22 31.16 0. 05 17.27 47.44 30.17 soi Mean difference, 73 signals . O 22 31.110) -b0.006 20. 70 59. 90 30. 20 0. 04 I 20 24.12 I 42 54.25 O 22 30.13 0. 03 Time signals received at Lima in the comparison between the Valparaiso and Lima chronometers—Continued. IN MEXICO AND CENTRAL AND SOUTH AMERICA. 105 Signals sent from | Signals received at Signals sent from | Signals received at Date. iso. Lima. Difference. uv. Date. Valparaiso. Lima. Difference. uv Chron. No. 1254. | Chron. No. 1295. Chron. No. 1254. | Chron. No. 1295. 1883. Am Ss. kom o hem. S. i 1883. AL Mm. S. A tm hm. Se 5. Dec. 20 I 20 27.81 I 42 57.95 O 22 30.14 0.02 || Dec. 24 1 50 52. 33 2 13 19.53 © 22 27.20 0. 19 30. 84 43. «1.21 30. 37 0. 21 50 56.60 23.59 26. 99 0. 02 33-92 4.17 30. 19 0. 03 5I 1.14! 28.19 27.05 0. 04 37-57 I FZ 30. 15 0. OI 5. Io | 32. 05 26. 95 0. 06 40. 69 Io. 82 30. 13 0. 03 g. 80 36. 80 27.00 0. O1 43. 81 14.00 30. 19 0. 03 14. 80 41. 80 27.00 0. O1 46. 97 17.00 30. 03 0.13 19. 50 46. 69 27.19 0. 18 49. 86 20, 00 30. 14 0. 02 24. 09 51.09 27.00 0. OL I 20 52.80 I 43 22.93 0 22 30.13 0. 03 28. 90 2 13 56.00 O 22 27.10 0. 0g I 20 59.77 I 43 29.96 QO 22 30.19 0. 03 OE 21 2.84 33. 10 30. 26 0. 10 I 51 39.00} 2 14 #+6,12 © 22 27.12 oO. 11 5-99 36. 19 30. 20 0. 04 41.55 9. 32 39. 51 30. 19 0. 03 44.71 | 11, 80 27.09 0. 08 12. 52 42.71 30. 19 0. 03 47.42 15. 68 45-97 30. 29 0. 13 51. 16 18. 20 27. 04 0. 03 18. 71 48. 98 | 30. 27 oO. 11 53-90 21.12 27.22 0. 21 21. 61 51. 80 30. 19 0, 03 51 57.00 24. 16 27. 16 0.15 24.70 54.91 30. 21 0. 05 52. 1.10 28. 00 26. 90 0.11 27.79 43 58.00 30. 21 0. 05 4.10 31.00 26. 90 O11 30. 95 44 1.14 30. 19 0. 03 7.16 34. 10 26. 94 0. 07 34. 48 4. 65 30. 17 0. O1 Io. 81 | 37-74 26. 93 0. 08 37-53 I 44 7.69 Oo 22 30.16 0. 00 14. 82 41.71 | 26. 89 O. 12 40. 27 17.94 44.91 26. 97 0. 04 I 21 43.49 21, 21 48. 20 | 26.99 0, 02 Mean difference, 7o signals. . . .| © 22 30.159) -:0.006 be 24008 Be aes oe ees oe8 Dec. 24 1 48 18.81 2 10 45.85 O 22 27.04 0. 03 ae 32. 31 a 1450: 40 2 8e 2789 o.05 36. 00 15 3.00 27.00 0. OI 22. 00 48. 99 26. 99 0. 02 25.00 51.92 26. 92 6:06 40. 71 | 7. 80 27.09 0. 08 28. 00 54.90 26. 90 oO. 11 BAL? mts 04 26:92 Pe? 31.00 10 57.85 26. 85 0. 16 = 56 si ay FA - ove 2. 90 9.91 27.01 0. 00 1 48 33.88 2 II 0.96 Oo 22 27.08 0. 07 Shes ae awe eee 1 49 26.78 2 11 53.86 O22 27:08 2:07 53. 0.30 27. 29 26. 99 0. 02 31. 80 11 58.61 26. 81 0. 20 4.30 31. 18 26. 88 0.13 35. 81 ms : 7.69 34. 61 26. 92 0.09 40. 15 Ee TOO 26. 85 0. 16 11. 60 38. 50 26. go O.1I 45. 35 12. 32 26.99 x02 15. 00 42. 00 27.00 0. O1 49. 24 16. 38 27.14 0. 13 17.99 45.00 27.01 ‘3160 53-71 20. 91 27. 20 0. 19 21. 25 48. 30 27.05 0. 04 49 57-75 24. 80 27.95 O04 t 53 23.61 2 15 50.84| 0 22 27.23 0. 22 50 2. 23 29. 48 27. 25 Pa Mean difference, 61 signals. . . .| 0 22 27,012] -0. 009 6. 54 33-56 27.02 0. OI 10. 32 37. 46 27.14 13 || Dec, 26 1 55 57.95 2 18 24.73 Oo 22 26.78 0. 25 14.55 41.59 27.04 0. 03 56 1.30 27, 84 26. 54 0. O1 18.79 45. 85 27.06 0.05 4.72 31. 26 26. 54 0.01 I 50 23.00 2 12 50,00; 0 22 27.00 Oot 7.83 34. 40 26.57 0. 04 I 50 31.43 2 12 58.60 O 22 27.17 0. 16 10. 74 37. 28 26. 54 0. OI 35.50 130 2.41 26. 91 0. 10 14.07 40. 58 26. 51 0. 02 39. 78 6. 60 26, 82 0. 19 16.04 43-45 26. 51 0. 02 44. 60 11. 60 27,00 0. OL 20. 13 46. 59 26. 46 0.07 1 50 48.70 2 13 15.60 Q 22 26,90 oO, 11 1 56 22,89 2 18 4g. 38 O 22 26.49 0. 04 11959 D L 14 196 TELEGRAPHIC DETERMINATION OF LONGITUDES Time signals received at Lima in comparison between the Valparaiso and Lima chronometers—Continued. Signals sent from Signals received at | Signals sent from | Signals received at Date. Valparaiso. Lima. Difference. | es Date. Valparaiso. Lima. Difference. v. Chron. No. 1254. Chron. No. 1295. \ Chron. No. 1254. | Chron. No. 1295. we Rein Pace ey le lee ee fall m as 1883. hom mS, hom. s. 5. 1883. A mos A ms. A ms. 5. Dec. 26 I 56 26.30 2 18 52.78 Oo 22 26.48 0.05 || Dec. 26 1 58 17.40 2 20 43.90 22 26.50 0. 03 29. 37 | 55. 89 26, 52 0. OI I 58 21.00 2 20 47.50 22 26.50 0. 03 | 32.05 18 58. 69 26. 64 Oo. 11 | 34.98 19 1.57 26. §9 666 1 58 27.79 2 20 54.29 © 22 26.50 0. 03 | 38. 16 — 31. 29 20 57.87 26. 58 0. 08 I 56 40.90 ' 2 19 7.49 0 22 26.59 0. 06 aacee ar B38 aor me 38. 37 4.92 26. 55 0. 02 I 56 46.47 2 I9 13.00 0 22 26.53 0. 00 41.90 8. 40 26. 50 0.03 a9: 85 16. 15 28:50 O03 45. 68 12. 16 26. 48 0.05 52.75 19°32 26. 55 O02 49. 15 15. 69 26. 54 0.01 55-74 22.34 26. 60 O507 52. 53 19. 00 26. 47 0. 06 Be 59:00 25. 50 26. 50 9:93 56. 39 22. 90 26. 51 0. 02 57 «2.19 28. 66 26.47 0. 06 58 59.45. ‘5600 26.75 D8 5-33 3r. 81 26. 48 0105 59 3-29 29. 80 26. 51 0, 02 8. 22 34-75 26. 53 D899. 7.23 33. 81 26. 58 0. 05 PEs! 37. 83 26. 52 On Ok 11. 12 37. 65 26. 53 0. 00 14. 20 40. 70 26. 50 0. 03 15. 37 41. 85 26. 48 0. 05 E74 43. 81 oe! Gere I 59 18.90 2 21 45.41 Oo 22 26.51 0. 02 20. 53 47.00 26. 47 0. 06 , 23. 84; 50. 36 26. 52 0. O1 |, 1 59 26.76 2 21 53.39 Oo 22 26.63 0. 10 26. 94 53-40 | 26. 46 0. 07 29. 72 56. 24 26. 52 O, OI I 57 30.16 2 19 56.69 O 22 26.53 0. 00 33-42 21 59. 89 26. 47 0. 06 1 57 36.32 oe 36. 77 22 (3.29 26. 52 0. o1 39. 54 2 20 6.00 0 22 26,46 0.07 He G05 B85 ae 42.51 9.00 26. 49 0.04 43. 26 9.72 26. 46 0. 07 45. 65 12,15 26. 50 0. 03 46. 28 13. 00 26. 72 0. Ig 48. 88 15. 38 26. 50 0.03 49. 58 16. 18 26. 60 0. 07 52. 40 18. 88 26. 48 0. 05 52. 50 T9817 26.67 Only 55.39 Siam 26. 53 Bcae 55-37 21. 89 26. 52 0. ol 57 58.47 ae 26. 51 a I 59 58.51 25. 08 26. 57 0, 04 58 1.48 27.95 26. 47 0. 06 2 oO 1.50 28. 08 26. 58 0. 05 Aaa 30. 92 26. 48 0.05 5.00 31.52 26. 52 0. O1 7. 66 ~ 34. 16 26. 50 0. 03 oO? 34. 85 26. 53 Ee in oe 37.53 26.53 06 2 oO 11.67 2 22 38.22 O 22 26.55 0. 02 1 58 14.21 2 20 40.71 oO 22 26.50 0. 03 Mean difference, 73 signals . O 22 26.532) +0, 005 Time signals received at Paita in the comparison between the Arica and Paita chronometers. Signals sent from | Signals received at Signals sent from | Signals received at Date. Arica. Paita. Difference. U. Date. Arica, Paita. Difference. UV Chron, No. 1254. | Chron. No. 1295. Chron. No. 1254. | Chron. No. 1295. 1884. he m. ’. he m. Ss. he m. o. $ 1884. he om. §: he m. S. Ae mi. s iss Feb. 2 6 48 26.21 7 10 56,62 oO 22 30.41 0.02 || Feb. 2 6 48 55.00 7 Il 25.43 O 22 30.43 0. 04 29. 39 10 59. 80 30. 41 0, 02 48 58.30 28. 78 30. 48 0. 09 32. 70 Il 3.15 30. 45 0. 06 49 «i. 23 31. 61 30. 38 0. OL 35-57 6. 00 30. 43 0. 04 4.00 34-45 30. 45 0. 06 38. 38 8.79 30. 41 0. 02 6.95 37.35 30. 40 0. OL 41.46 11. 83 30. 37 0. 02 6 49 9.76 7 Il 40.13 O 22 30.37 0. 02 44. 86 15. 29 30. 43 0. 04 48. 10 18.55 30. 45 0. 06 49 17.36 7 IL 47.78 | O 22 30.42 0. 03 6 48 51.48 7 Ir 21.88 oO 22 30.40 0, O1 49 20,46 7 It 50.81 9 22 30. 35 0. 04 IN MEXICO AND CENTRAL AND SOUTH AMERICA. Time signals received at Paita in the comparison between the Arica and Paita chronometers—Continued. LO7 Signals sent from | Signals received at Signals sent from | Signals received at : Date. Arica. Paita. Difference. Arica, Paita. Difference. Chron. No. 1254. | Chron. No. 1295. Chron, No. 1254. | Chron. No. 1295. 1884. Acm os. Ae hes. Am Ss. 5. 1884. he me A. ms. hem. 5. ie Feb, 2 6 49 23.84 7 Il 54.20 O 22 30.36 0.03 || Feb, 2 6 52 19.95] . 14 50. 31 © 22 30.36 0.03. 26. 81 Il 57.19 30. 38 0. OI 23. 31 53-72 30. 41 0. 02 29. 84 12 0.21 30. 37 0, 02 26. 44 14 56. 85 30. 41 0. 02 32. 85 3. 24 30. 39 0. 00 29. 68 15 0.03 _ 3035 0. 04 35. 82 6. 21 30. 39 0. 00 32.92 3. 06 30. 34 0. 05 38. 80 g. 20 30. 40 0. O1 35. 36- 5.72 30. 36 0. 03 42. 27 12. 65 30. 38 0. O1 6 52 38.14 7 15 8.54 O 22 30.40 0. OL 45.79 acre 3° 35 D4 , Mean difference, 75 signals . . . © 22 30.390) +0.003 | oe as sail oe Fel 6 6 Oo 22 0. 00 52. 39 22.75 30. 36 0.03 eb. 4 57 43. 30 7 20 10.75 33: E ; : 55. 85 26. 26 30. 41 0. 02 46.39 FeO SSF ae 49 59.20 29. 56 30. 36 0. 03 49-95 - a 33 : ne 6 50 2.65 7 12 32.98 O 22 30.33 0. 06 Ba028 20° 33:4 +3 57 56.90 30. 40 33-50 0. 05 6@ 50 10.18 7 12 40.59 © 22 30.41 0, 02 58 0.80 34.23 33.43 Oo2 13. 28 43. 67 30. 39 0. 00 4.51 37.94 33. 43 er 16.08 47. 33 30. 35 204: 8. 10 41.55 33.45 0. 00 | 20, 07 50. 50 30. 43 0. 04, 12. 34 45. 78 33.44 6% 23. 43 53. 80 30. 37 0. 02 15. 66 49.19 33-53 0.08 26. 56 56. 92 30. 36, 0. 03 19.74 53.19 33. 45 o500 29. 37 a2 “gore 3° 43 2: OF 23.71 20 57.15 33-44 | 0.01 32. 25 13 2.60 30. 35 0. 04 27. 35 21 0.80 33. 45 B66 35-19 5-59 pas pee 30. 82 4.29 33-47 0, 02 37- 9° 8. 26 30. 36 0. 93 6 58 34.60 7 21 8.00] © 22 33.40 0. 05 40. 89 11, 28 30. 39 _ 0,00 } F 43. 84 14. 21 30. 37 0. 02 6 58 44.99 7 21 18.58) © 22 33.59 0. 14 46. 83 17. 29 30. 46 0.07 49. 60 23. 06 33- 46 0. OL 49.90 20. 29 30. 39 0. 00 52.98 26. 49 33-51 0. 06 6 50 53.00 7 13 23.30 0 22 30.30 0, 09 58 56.51 29. 98 33-47 0. 02 6 51 1.94 7 13 32.39 O 22 30.45 0. 06 pe Or O7 33: 5° 33: = Pee 5.70 36. 03 | 30. 33 0. 06 4,08 37. 5° 33-4 . ey 9. 26 39. 60 30. 34 0. 05 7 telS 33: 44 - 11. 62 45.00 33. 38 0.07 12, 22 42. 63 30. 41 0. 02 15.44 48. 82 33. 38 0. 07 15. 34 45-73 30. 39 0. 00 1g. 19 52. 60 33-41 0. 04 18. 39 48.79 30. 40 0. OL 23.00 21 56.40 33-40 0.05 21. 80 52.19 30. 39 0. 00 |! 26. 74 22 0.18 33-44 0. OL 24. 91 55.30 30. 39 0. 00 : 30. 34 3-74 33-40 0. 05 27.82 13 58.22 30. 40 0. OI Ba 92 7.20 33. 48 0. 03 30. 68 14. 1.08 30. 40 0. O1 6 59 36.89 7 22 10.32 O 22 33.43 0. 02 33-53 3-93 30. 40 0, O1 36. 42 6. 80 30. 38 Orr 6 59 44.00 7 22 17,85] © 22 33.55 0. 10 39. 30 9. 68 30. 38 Qrol 48. 00 21. 50 33. 50 0. 05 42. 06 12. 46 30. 40 Oust 4 51.90 25. 36 33. 46 0. oI 6 51 44.89 7 14 15.26 O 22 30.37 0. 02 55.70 29. 15 33: 45 3.60 6 51 53-12 7 14 23.60 o 22 30.48 0. 09 59 59.63 33. 08 33.45 0. 00 56. 50 26. 89 30. 39 0. 00 7 0 3.43 36. 89 33. 46 0. OL 51 59.90 30. 29 30. 39 0, 00 6. 70 40. 19 33-49 0. 04 52 3.42 33. 81 30. 39 0. 00 10, 00 43-55 33-55 0. 10 7.00 37.40 30. 40 0. O1 13. 51 46. 98 33-47 0. 02 10. 37 40. 71 30. 34 0. 05 16, 68 50. 18 33. 50 0. 05 13. 64 44. 00 30. 36 0. 03 19. 99 53-35 33- 36 0. 09 6 52 16.79 7 14 47.15 © 22 30.36 0. 03 7 0 23,68 7 22 57.07 O 22 33.39 0. 06 108 TELEGRAPHIC DETERMINATION OF LONGITUDES Time signals received at Paita in the comparison between the Arica and Paita chronometers—Continued. Signals sent from | Signals received at | Signals sent from | Signals received at Date. Arica. Paita. Difference. v. || Date. Arica, Paita. Difference. v. Chron. No, 1254. | Chron. No. 1293. ’ Chron. No. 1254. | Chron. No. 1295. 1884. he om. 5. Ahem. Ss. A. om. s S. 1884. he om. s hem. $y he ™m. y 5. Feb, 4 7 © 27.00 23. 0.40] 0 22 33.40 0.05 || Feb. 4 7 1 44.82 7 24 18.44] © 22 33.62 0.17 30. 59 4.00 33.41 0. 04 49. 00 22.47 33-47 0. 02 7 © 33.90 7 23° 7.34) © 22 33.44 0.01 53. 89 27. 39 33. 50 0. 05 7 O 42.61 7 23 16.12 O 22 33.51 0. 06 1 57.65 31.11 33-46 0. O1 46. 48 19. 88 33. 40 0. 05 a. es 35-09" 33.46 eae 50. 40 23. 81 33-41 0. 04 5-79 39. 20 33-41 0. 04 54. 29 27.76 33-47 vee 9. 56 43-00 33- 44 0. O1 Oo 58.82 32. 25 33-43 0.02 13. 40 46. 85 33-45 0. 00 1 2.89 36. 28 33-39 0. 06 17. 35 50. 80 33-45 0. 00 6. 54 40. 00 33. 46 0. OI 21. 30 54.70 33-40 0. 05 10. 69 44. 06 33237 0. 08 24. 96 24 58.45 33-49 0. 04 14. 22 47.70 33-48 0. 03 28. 30 25 1.91 33. 61 0. 16 17.92 51. 31 33: 39 0. 06 31. 63 5.14 33. 51 0. 06 21.78 55.18 33-40 0. 05 35.30 8.71 33-41 O64 25.90 23 59. 30: 33-40 0. 05 29. 79 24 3.20 33.41 104 7 2 38.79 7 25 12.20 © 22 33.41 0. 04 33- 64 7.00 33. 36 0. 09 ioe 7 1 37.48 7 24 10,86 O 22 33.38 0. 07 Mean difference, 75 signals . ! © 22 33-452! +o. 004 Time signals received at Paita in the comparison between the Arica and Paita chronometers. : Signals sent from | Signals received at Signals sent from | Signals received at Date. Arica. Paita. Difference. v. Date. Arica, Paita. Difference. v. Chron. No. 1470. | Chron. No. 1684. Chron. No. 1470. | Chron. No. 1684. 1884. Am os. hm 5 Amy. ye 1884. Ams. Am Ss. Am Ss. Feb. 4 I2 44 49.93. 13° 4 2.50 Oo 19 12. 57 0.17 || Feb. 4 12 46 15.18 13, 5 27.56 Oo 19 12.38 0, 02 53.10 5.80 12.70 0. 30 18. 00 30. 42 12. 42 0. 02 44 57.00 9-45 12.45 0. 05 20. 66 33.00 12. 34 0. 06 45 0.62 13.00 12. 38 0. 02 12 46 23.24 13, 5 35. 63 Oo Ig 12.39 0. OL 4.50 16. 86 12, 36 0, 04 7.56 19.97 12. 41 acai 12 46 29.14 13 5 41.60 Oo 19 12.46 0. 06 10. 76 23.13 12. 37 0. 03 32. 00 44. 40 42240 OF 00 13.95 26. 29 12. 34 0. 06 ao td 47-57 #2439 eos 17. 38 29. 78 12. 40 0. 00 38.00 50 44 12. 44 0. 04 20. 30 32. 70 12. 40 enon 40. 90 53. 28 12, 38 0. 02 23. 41 35. 80 12. 39 0. OI 43. 65 56. 00 12. 35 0:95 36a 38.49 12.49 0.09 46. 40 5 58.80 12. 40 0. 00 28. 48 40. 89 12. 41 0.01 49.40 6 1.60 ee 0:20 31.15 43. 52 12. 37 0.03 52. 30 4. 68 12, 38 0. 02 I2 45 33.60 13, 4 45.96 © 19 12.36 0. 04 55. 10 7.50 12.40 9.00 46 58.00 10. 40 12. 40 0. 00 12 45 42.22 13 4 54.69) © 19 12.47 0:07 47 0.76 13.12 12, 36 0. 04 45. 29 4 57.69 12. 40 0. 00 3.50 15. 89 12, 39 0. O1 48.41 5 Ones naott ass 6. 35 18.73 12. 38 0. 02 51.50 3. 89 12. 39 O: 91 12 47 9.40| 13 6 21.80} © 19 12.40 0. 00 54. 81 7.23 12. 42 0. 02 45 57.80 10. 22 12. 42 0. 02 12 47 16.99 13 6 29.49 Oo Ig 12.50 o. 10 46 0.88 13. 26 12. 38 0. 02 20. 19 32. 58 12. 39 0. O1 3.92 16, 30 12, 38 0. 02 23. 30 35- 69 12. 39 0. OI 7.00 19. 36 12. 36 0. 04 26. 50 38. 97 12.47 0. 07 9.51 21.95 12. 44 0. 04 29. 65 42. 05 12. 40 0. 00 12 46 12.44 13. 5 24.70 Oo Ig 12.26 0.14 I2 47 32.76 13 6 45.16|}0 19 12. 40 0, 00 IN MEXICO AND CENTRAL AND SOUTH AMERICA. Time signals received at Paita in the comparison between the Arica and Paita chronometers—Continued. 109 Signals sent from Signals received at Signals sent from Signals received at Date. Arica. Paita. Difference. a Date. Arica. Paita. Difference. U. Chron. No. 1470. | Chron. No, 1684. Chron. No. 1470. | Chron. No. 1684, 1884. he om, Se hk ms. AL om. Ss. Se 1884. A mM D he mS. he m. Se S. Feb. 4 12 47 35.70 13, 6 48.10 © I9 12.40 0.00 || Feb. 4 12 48 14.55 13,7 26.94 Oo I9 12.39 0. OI 38. 38 50. 85 12.47 0. 07 17. 42 29. 81 12. 39 0, OI 41. 29 de sds 20. 17 32. 52 12. 35 0. 05 44. 00 56. 46 12. 46 0. 06 22. 68 35. - 12, 32 0.08 25.41 . 80 12, 0. Or os oS oa ee re . - 48 12. - 0. 03 Aonbs nee Tends 05 30. 80 43. 20 12. 40 0. 00 52. 63 5.00 12. 37 0.03 33:53 45.95 12. 42 0. 02 55. 60 7-95 12. 35 0. 05 36. 16 48. 58 12. 42 0. 02 12 47 58.37 13, 7 10.95 Oo 19 12.58 o. 18 38. 69 51.16 12.47 0. 07 41, 63 54.00 12. 37 0. 03 aS . : ae a a. ae : . - 12 48 44.47 B 7 56.83] © 19 12.36 0. 04 12 48 11.46 13 7 23.82 © 19 12.36 0. 04 Mean difference, 74 signals . . . © 19 12.405} -k0. 005 Time signals received at Panama in the comparison between the Paita and Panama chronometers. Signals sent from | Signals received at Signals sent from | Signals received at Date. Paita. Panama. Difference. uv Date. Paita. Panama. Difference. Vv. Chron. No. 1254. | Chron. No. 1295. Chron. No. 1254. | Chron. No. 1295. 1884. h. m. Si hh. m. Ss h. m. Ss. S. h. m. S. he m. 5. he om. S. 5. Mar. 3 7 23 3.60 7 45 45.49 Oo 22 41.89 0. 04 1884. 7 24 22,87 7°47 4.75 Oo 22 41.88 0. 03 5. 88 47.98 42. 10 0. 25 Man. 3 25.31 7.16 41. 85 0. 00 8.11 49. 92 41. 81 0. 04 27. 88 g. 68 41. 80 0. 05 10. 40 52. 22 41. 82 0. 03 30. 40 12, 21 4i. 81 0. 04 12. 73 54.59 41. 86 0. O1 33-07 14. 90 41. 83 0. 02 15. 38 57.20 41. 82 0. 03 35-60 17. 40, 41. 80 0.05 17.56 45 59.57 42. 01 0. 16 38°13 19. 90 41.77 0. 08 19. 72 46 «1.52 41. 80 0.05 40. 59 22. 37 41.78 0. 07 22. 00 3. 86 41. 86 0. OI 43. 40 25. 25 41.85 0. 00 24. 36 6. 20 41. 84 0. OI 45.76 27. 60 41. 84 0. OI 26.59 8.44 41. 85 0. 00 48.15 30. 00 41. 85 0. 00 28. 80 10. 68 41. 88 0. 03 50. 60 32. 40 41. 80 0. 05 31. 08 12. 82 41-74 0. II 52. 81 34.70 41. 89 0. 04 33- 37 15.18 4r. 81 0. 04 55-21 37.10 41. 89 0. 04 7 23 35.53 7 46 17.32 O 22 41.79 0. 06 7 24 57.48 7 47 39.30 O 22 41.82 0. 03 7 23 41.40 7 46 23.29 Oo 22 41.89 0. 04 7 25 3.20 7° 47° «+45.11 oO 22 41.91 0. 06 43. 76 25. 60 41. 84 0. OL 5.60 47-47 41. 87 0. 02 46. 16 27.99 41. 83 0. 02 8. 43 50. 31 41. 88 0. 03 48.77 30. 59 41. 82 0. 03 11.07 52.90 41. 83 0. 02 51. 61 33-41 41. 80 0. 05 13.11 55.08 41.97 0. 12 54.51 36. 29 41.78 0.07 15.70 57. 60 41.90 0. 05 23 57.21 39. 00 41.79 0. 06 18. 00 47. 59.90 41.90 0. 05 24 0.13 41.91 41.78 0. 07 20. 40 48 = 2.25 41. 85 0. 00 2. 67 44. 50 41, 83 0. 02 22. 69 4.53 41. 84 0. OI 5.45 47. 30 41. 85 0. 00 25.00 6. 82 41. 82 0. 03 8. 00 49. 80 41. 80 0. 05 27.41 9. 29 41. 88 0. 03 10. 47 52. 24 41.77 0. 08 29. 70 11. 56 41. 86 0. OI 12. 73 84.57 41. 84 0. O1 31. 83 13.77 41. 94 0. 09 14. 90 56. 80 41.90 0. 05 34. 00 15.90 41.90 0. 05 7 24 17.32 7 46 59.29 O 22 41.97 0. 12 7 25 36.21 7 48 18.12 Oo 22 41.91 0. 06 110 Time signals received at Panama in the comparison between the Paita and Panama chronometers—Continued. Signals sent from TELEGRAPHIC DETERMINATION OF LONGITUDES Signals received at Signals sent from Signals received at Date. Paita. Panama. Difference, Ue Date. Paita. Panama. Difference. v. Chron. No. 1254. | Chron, No. 1295. Chron. No. 1254. | Chron. No. 1295. 1884. A. m. Ss. he m. S. Ah. m. ss Se 1884. h. m. iS A. m. Si he mm. o S. Mar. 3 7 25 42.79 7 48 24.72 O 22 41.93 0.08 || Mar. 9 6 50 28.78 7 13° 15.10 0 22 46.32 0. 00 44. 80 26. 80 42. 00 0. 15 31.65 17.98 46. 33 0. O1 46. 87 28, 80 41.93 0. 08 34. 61 20. 88 46. 27 0, 05 49. 00 30. 88 41. 88 0. 03 37.41 23.77 46. 36 0, 04 51. 68 33-42 41.74 O11 40. 30 26. 59 46. 29 9.03 54. 32 36. 10 41. 78 0. 07 43. 22 29. 50 46. 28 0. 04 57-15 38.95 41. 80 0. 05 46. 00 32. 30 46. 30 0. 02 25 59.65 41.50 41. 85 0. 00 48. 86 35.16 46. 30 0. 02 26 2.20 44. 00 41. 80 0. 05 51. 62 37.90 46. 28 0. 04 | 4. 83 46. 65 41. 82 0. 03 54. 30 40. 61 46. 33 0. O1 7-47 49. 24 41.77 0. 08 6 §0 57.00 7 13 43.30} © 22 46,30 0, 02 10. 00 51. 88 41. 88 °. 03 12. 63 54. 40 41.77 0. 08 6 51 5.17 7 13 51.60 O 22 46.43 0. 11 18.17 7 48 56.95| o 22 41.78 0.07 8.35 54. 68 46. 33 0. OL 7 26 18.00 11. 08 13 57.42 46. 34 0. 02 14. 00 14 0.30 46. 30 0. 02 Mean difference, 74 signals. . . . O 22 41.849) -K0. 005 sacks at 46. 31 oi Mar 9 6 48 37.94 7 Il 24.28 O 22 46.34 0. 02 19. 49 5.81 46. 32 0. 00 40. 54 26. 89 46. 35 0. 03 22, 22 8.56 46. 34 0. 02 43. 21 29. 50 46, 29 0. 03 25. 20 II. 50 46. 30 0, 02 45.70 32. 27 46. 57 0. 25 27.95 14. 24 46. 29 0. 03 48. 24 34. 63 46. 39 0.07 30. 60 16. 90 46.30 | . 0,02 50. 81 37.00 46. 19 0. 13 33.17 19. 50 46. 33 0. OI 53-39 39. 70 46. 31 0. 01 36.17 22. 42 46. 25 0. 07 55-55 42. 90 46. 35 0. 03 38. 95 25. 28 46. 33 0. Of 48 59. 40 45-74 46. 34 0. 02 41.71 28. 00 46. 29 0. 03 49 1.90- 48. 29 46. 39 0.07 6 51 44.41 7 14 30.70! © 22 46.29 0. 03 4. 61 51.00 46. 39 0. 07 7.10 53.49 46. 39 0.07 6 51 50.06 7 14 36.48 O 22 46.42 0.10. g. 68 56. 00 46. 32 0. 00 52. 76 39. 08 46. 32 0. 00 12. 29 Ir 58.54 46. 25 0.07 55-94 42. 21 46. 27 0. 05 6 49 14.81 7 12 1.15 Oo 22 46.36 0. 04 51 58.80 45.05 46. 25 0. 07 52 «1.73 48. 00 46. 27 0. 05 6 49 20.68 7 AB 00 Oo 22 46.32 0.00 Aes 50. 8 an Bes 23.59 9.90 46. 31 0. O1 ae Sat 46.46 03 26. 26 12.55 46. 29 0. 03 gay cea aes a 29. O7 15. 33 46. 26 0. 06 x 1 B96 ibe re atts heed? BP: 24 ee 14. 64 15 1.10 46. 46 0. 14 34. 71 21.00 46. 29 0. 03 ito 3.30 46. 30 0. 02 37.48 23.75 46. 27 0. 05 ~— — 31 SuiBk 40. 56 26. 80 46. 24 0. 08 eae. — ab a side noe oe i aoe oe 24.72 11.00 46. 28 |: 0. 04 46. 31 32. 65 46. 34 0. 02 eee peices as a Gatuees Bee 49. 29 35-57 46. 28 0. 04 52. 20 38. 50 46. 30 0. 02 Mean difference, 75 signals. . . . © 22 46.320) +0. 004 55- 9° ai 90 438 0 04 |! Mar, 13 7 5 45.40 7 28 34.00 0-22 48.60; 0,01 49 58.40 44. 70 46. 30 0. 02 48.91 37.50 48. 59 0. 00 6 50 1.51 7 12 47.89] © 22 46.38 0. 06 54. 54 43. 29 48.75 0. 16 6 50 16.30 7 13 «2.69 Oo 22 46.39 0. 07 5 59.00 47. 64 48. 64 0. 05 19. 61 5-90 46. 29 0. 03 6 2.83 51. 48 48. 65 0. 06 22. 89 g. 21 46. 32 0. 00 6. 69 55-31 48. 62 0, 03 6 50 25.73 7 13 12.10 Oo 22 46.37 0. 05 7 6 9.77 7 28 58.40 Oo 22 48.63 0. 04 IN MEXICO AND CENTRAL AND SOUTH AMERICA. 111 Time signals received at Panama in the comparison between the Paita and Panama chronometers—Continued. Signals sent from | Signals received at Signals sent from | Signals received at Date. Paita. Panama. Difference. Vv Date. Paita, Panama. Difference. v. Chron. No. 1254. | Chron, No. 1295. Chron, No, 1254. | Chron. No. 1295. 1884. home». homes. Ah, me S. S: 1884. he Mm. he Mh. he M.S. S. Mar. 13 7 6 12.76 7 29 «1.39 Oo 22 48.63 0. 04 |) Mar. 13 7 9 14.71 7: 632 63:33 o 22 48.62 0. 03 15. 69 4.27 48. 58 0. OL 17. 65 6. 22 48.57 0. 02 18.20 6. 89 48. 69 O20 20.79 g. 36 48.57 0. 02 saa 9-73 48.53 exe6 24. 50 13. 00 48. 50 0. 09 pees eas at a 28. 32 16.90 48. 58 0.01 27.60 16, 15 48.55 0. 04 31. 33 19. 89 48. 56 0. 03 31.53 20. 15 48. 62 0, 03 7 6 34.00 7 29 22.73| o 22 48.73 0. 14 34. 60 23. 16 48. 56 0. 03 38. 46 27.00 48. 54 0,05 7 6 40.22 7 29 28.99 0 22 48.977 0. 18 i we 46s ae 43- 30 31. 90 48. 60 0. OI Bais ae 48.57 ie 46. 61 35.18 48. 57 0, 02 48. 63 aaa aes eae 49. 81 38. 40 48.59 0. 00 “0, 83 i540 ee coe 52. 82 41.47 48. 65 0. 06 Se uae 48. 56 oieg ee ee ab 58 wee gy 58.00 46. 60 48. 60 0. OI 8 ee 48. 54 see8 7 10 1.10 7 32 49.70 0 22 48.60 0. O1 7. . 00 50. 61 48. 61 0. 02 4. 69 53.21 48. 52 0.07 Mean difference, 75 signals . . . O 22 48.591| 0,004 7.40 “56. 00 48. 60 0. O1 10. II 29 58.70 48.59 0.00 || Mar. 14 7 6 31.24 7 29 20,90| © 22 49.66 0. 22 12.71 30.—O«: 3 48. 60 0. OI 35-49 _ 25. 00 49.51 0. 07 15. 86 4.50 48. 64 0.05 38. 48 27.97 49. 49 0.05 18. 81 7.40 48. 59 0. 00 41.99 31. 42 49- 43 0. Or 7 7 21.81 7 30 10.39] oO 22 48.58 0. O1 45.14 34. 63 49.49 9:05 48. 22 37.70 49. 48 0. 04 7 7 28.09 7 30 16.69 Oo 22 48.60 0, Or gS i te or Bh 31.29 19.90 48. 61 0, 02 55.19 aa te Agias aon 34 39 aa abe nace 6 58.64 48. 10 49. 46 0. 02 : 37-70 ae24 48. 54 oes 7 3.12 52. 58 49. 46 0. 02 ee? eau 48.59 oP 6. 00 55.51 49. 51 0.07 ae gas aso 4 Ore 7 7 9:3t| 7 29 $875 | o 22 49.44] 0,00 47.31 35-90 48.59 0. 00, 50. 32 38.91 48.59 0. 00 7 7 16.40 7 38 593) & 22 49-53 0. 09 53-39 41.94 48.55 | 0.04 cs ae Gorge | “1005 56. 69 45.31 48. 62 0. 03 23. 48 12.95 49-47 9. 03 7 59.78 48. 32 48.54 0. 05 27.40 16. 88 49. 48 0. 04 8 2,80 51. 37 48. 57 0. 02 BEH00 20:40) 49. 40 0. 04 600: 54. 58 48.58 0-01 34. 10 23. 58 49. 48 0.04 8.57 30 57.19 48. 62 0.03 37.00 26. 49 49. 49 0. 05 7 8 11.46 7 31 oor} 0 22 48.55 0. 04 40. 55 29. 98 49. 43 0. OL 43.54 32.97 49- 43 0. OF 7 8 17.96 7 31 6.53 Oo 22 48.57 0. 02 46,07 36, 48 ecu oi63 21. 84 10. 41 48.57 0. 02 50. 35 39.72 49-37 0.07 25. 05 aah ey) ae 53-31 42.75 49.44) 0.00 29. 60 18, 20 48. 60 0, O1 7 56.88 A624 49.46 es 33- 23 21. 81 48. 58 0, OI oe Hah 0 4a — : 3782 25:59 qB.59 ee 7 8 3.10 7 30 52.58 Oo 22 49.48 0. 04 F 0, O1 i a Bs 7 0.05 7 8 9.50 7 30 59.00 Oo 22 49.50 0. 06 47. 86 36.44 48. 58 6.0% 12. 80 3102. 24 49. 44 0. 00 51. 44 40. 08 48. 64 0. 05 16. 25 5-68 49. 43 OnO1 54.58 43. 20 48. 62 0. 03 19. 80 9- 23 49. 43 Os01 ¥ 58.09 46. 66 48.57 0. 02 23:09 12.49 49. 49 0.05 ‘ 9 1.38 50. 10 48. 52 0. 07 26. 50 15.98 49. 48 0. 04, 5.19 53-79 48. 60 0. O1 30. 00 19. 45 49. 45 0. OI 7 9 8.93 7 31 «57.51 o 22 48.58 0. OI 7 8 33.21 7 31 22.70 0 22 49.49 0. 05 112 Time signals received at Panama in the comparison between the Paita and Panama chronometers—Continued, TELEGRAPHIC DETERMINATION OF LONGITUDES Signals received at | Signals sent from Signals sent from | Signals received at Date. Paita. Panama. Difference, v. Date. Paita. Panama. Difference. U, Chron. No. 1254. | Chron. No. 1295. Chron. No. 1254. |; Chron. No. 1295. 1884. hom ss. he ms. hom. $s 1884. Ah, om 5. hom 5. he Meo. Ss. Mar. 14 8 36.51 7 31 25.96 © 22 49.45 0.01 || Mar. 14 7 9 39.95 7 32 29.38 O 22 49.43 0. O1 40. 51 29. 93 49. 42 0. 02 43.05 32. 48 49. 43 0. O1 43.90 33-30 49. 40 9. 04 7 9 45-79 7 32 35.21 O 22 49.42 0. 02 lace ae said ab 7 9 51.90] 7 32 41.39] © 22 49.49] 0.05 5° 55 39: 96 49. 41 O03 55. 46 44. 88 49. 42 0. 02 53-40 42:29 49-49 me 9 58.86 48. 25 49. 39 0. 05 7 8 55.94 7 31 45.40 0 22 49.46 O. 02 Io 1.70 51.14 49. 44 oo 7 9 4.40] 7 3% §0.93| © 22 49.53] 0.09 ac ae See |) eee 4.58 54.09 49. §1 0.07 7. 82 32 57-19 49. 37 0.07 7.78 31. 57.19 49.41 0,03 10.77 33 «0.21 49. 44 0. 00 IT. 00 32 0.41 49. 41 0. 03 #438 3. 83 49-45 OO! 14. 33 3-70 49.37 | 0.07 a3 a Sa, 17. 31 6.72 49. at 0.03 20. 62 10. 00 49. 38 0. 06 21.11 10. 55 49- 44 0. 00 23. 64 H5/08 49: 44 BE 24. 68 ioe 49. 32 aie 26. 80 16, 19 49. 39 0. 05 28. 27 17.62 49. 35 0. 09 3°. 14 19.59 49: 45 O09! 31. 46 20. 88 49. 42 0. 02 33: 37 22599 49: 42 noe 34. 4o 23. 81 49. 41 0.03 7 10 36.52 7 33 25.95 O 22 49.43 0. O1 7 9 37.20 7 32 26.60 Oo 22 49.40 0. 04 Mean difference, 72 signals . O 22 49.443} 0.004 Time signals received at Panama in the comparison between the Libertad and Panama chronometers. Signals sent from | Signals received at Signals sent from | Signals received at Date. La Libertad. Panama. Difference. Dv Date. La Libertad. Panama. Difference. v Chron, No. 1470. | Chron, No. 1295. Chron. No. 1470. | Chron. No. 1295. 1884. he ms. A. om ss. he ms. s 1884. he mS. he mS. A mo v Mar. 22 13 51 0. 38 San tch Bar cee 3 Mar. 22 13 52 0.70 8 46 4.24 5 5 56.46 0. 12 3.00 8 45 6.71 5 5 56.29 0, 05 2. 48 6. 19 56. 29 0. 05 5.44 9.11 56. 33 0. O1 é 4. 33 8. 00 56. 33 0. OL 7.65 Il. 37 56. 28 0. 06 6. 20 g. 80 56. 40 0. 06 10. 00 13.59 56. 41 0. 07 8. 00 11. 69 56. 31 0, 03 12, 32 16, 00 56. 32 0. 02 13 52 9.80 8 46 13.54 5 5 56.26 0. 08 15.31 18. 94 56. 37 0. 03 17.82 21.47 - 56. 35 6aY 13 52 15.39 8 46 19.04] § § 56.35 0. OL 20. 20 23.79 56. 41 0.07 18. 29 21.90 56. 39 0. 05 22. 45 26. 04 56. 41 0. 07 20. 62 24. 26 56. 36 0. 02 24.75 28. 34 56. 41 0.07 23.00 26. 68 56. 32 0. 02 26. 84 30. 50 56. 34 0. 00 25. 33 28. 99 56. 34 0. 00 29. 00 32.72 56. 28 0. 06 27. 33 31. 00 56. 33 9. O1 31.33 34. 96 56. 37 0.03 29. 40 33- 00 56. 40 0. 06 13 51 33.46) 8 45 37-11] 5 5 56.35] 0.0% a 35:99 Soeta OAR 33-45 37.09 56. 36 0, 02 13 51 41.43 8 45 54.14{ 5 5 56.29 0. 05 35.45 39.05 56.40 @ek 43. 67 47. 30 56. 37 0. 93 37-49 41. 04 56. 45 oO. 11 45.78 49. 48 Se) Tee 39. 37 43. 00 56. 37 0.03 48. 00 51.70 p30 OO 41.50 8 46 45.14] 5 5§ 56.36 0, 02 50. 26 53-92 56. 34 0. 00 13 52 45.50 : 52. 56 56. 18 56. 38 0. 04 54. 60 45 58.26 56. 34 0. 00 13 52 52.00 8 46 55.71 5 5 §6.29 0. 05 56. 70 46 0.39] 5 5 56.31 0. 03 54-17 46 57.83 56. 34 0. 00 13 51 58.63 8 46 2.32} 5 5 56.31 0. 03 13. 52 56.44 8 47 0,08 5 5 56.36 0, 02 IN MEXICO AND CENTRAL AND SOUTH AMERICA. 113 Time signals received at Panama in the comparison between the Libertad and Panama chronometers—Continued, ‘ | Signals sent from ‘ Signals received at | Signals sent from | Signals received at Date. La Libertad. Panama. | Difference. a" Date. La Libertad. Panama, Difference. v. | Chron. No. 1470. Chron, No, 1295. ; Chron. No. 1470. | Chron. No. 1295. 1884. A, om, Ss Ae my sO om. Ss s 1884. A. Mm. ss hem, 8 A. om. g 3 Mar. 22 13 52 59.23 8 47 2.88 5 § 56.35 0,01 |} Mar. 23 13 17. 48.39 8 11 51.40 5 § 56.99 0. OI 53. 2.30 5.95 | 56. 35 0. O1 51.11 54. 16 56.95 0.03 4.95 8. 69 56. 26 0. 08 54.00 56. 96 57. 04 0, 06 7. 80 II. 43 56. 37 0. 03 56.55 II 59.57 56.98 6. 00 10. 30 13. 92 56. 38 0. 04 17 58. 89 12. 1.96 56. 93 0. 05 12.79 16. 69 56. 10 0. 24 18 1.43 | 4.44 56. 99 0. O1 15.73 19. 34 56. 39 0.05 4.00 7.09 56. 91 0. 07 : 18. 16 21.80 56. 36 0. 02 13 18 7.09 | 8 12 10,10 5 5 56.99 0. OL | oe ee) ee) | ocean ieee) 6 anes, ae 24. 98 28. 66 56. 32 0. 02 | aoe = <0 e oe a = ! 13° 53 27-21 8 47 30.90 5 65) «(56.31 0. 03 ! i fi os - | - - 2 a + 13 53. 32.00 8 47 35.68 5 5 56.32 0. 02 | oy aa 40:48 56.94 6.04. 34. 61 38. 30 56. 31 0. 03 30. 59 33.61 56. 98 6.86: 37.10 40. 76 56. 34 9. 00 | | 33. 63 36.71 56. 92 Ps 39-19 | 42. 84 56. 35 ek 36. 30 39. 42 56. 88 0. 10 41. 33 | 45.00 56. 33 O01 39. 00 42. 00 57.00 0. 02 43-61 | 47. 28 56. 33 Oc Or 42. 00 45-00 57.00 0. 02 46. 00 49.59 56. 41 9:07 45.17 48. 16 57.01 0. 03 48. 08 51.71 56. 37 0. 03 47.97 50. 98 56. 99 6-01 50. 12 53. 76 56. 36 0:02 50. 95 54.00 56. 95 0.03 52. 52 56. 18 56. 34 OF99 54. 00 57.00 57.00 0. 02 55-14 47 58.79 56. 35 OyOr ' 13. 18 56. 87 8 12 59.90; 5 § 56.97 0.01 oe oe ae ae 313,19 «6.72 8 13 9.86 5 65. «(56.86 0. 12 53 59.85 3.48 a 10. 18 13.15 57-03 0. 05 me eee se ee Te 13. 21 16, 22 56.99 0. OI me Dy. Ae Pe Sey 55 56-38 ae 16, 22 19. 23 56. 99 0. OL Mean difference, 72 signals. . . . 5 5 56.344) 0. 004 19. 71 22.70 57.01 0. 03 Mar. 23 13 16 39.23 8 10 42.30 5 5 «56.93 0. 05 22. 65 25. 69 56. 96 0.02 42. 00 45. 00 57.00 0. 02 25-45 28. 45 57-00 0, 02 44.67 47.71 56. 96 0. 02 28. 49 31. 50 56. 99 0. O1 47.43 50. 45 56. 98 0. 00 31.54 34. 51 57-93 0.05 50. 19 53.12 57.07 0. 09 34. 80 37.78 57.02 0. 04 53. 30 56. 30 57.00 0. 02 38. 00 41. 00 57. 00 0. 02 56. 12 Io 59.11 57.01 0, 03 41.00 44. 00 57.00 0, 02 16 59.48 Ir 2.49 56.99 0. OF 44. 30 47. 28 57.02 0. 04 17 2.50 5.50 $7.00 0. 02 47- 39 50. 40 56.99 0. oF 5.45 8. 46 56.99 0. OI 13 19 50.63 8 13 53.67 5 5 56.96 0. 02 8.47 11. 44 57-03 0.05 13 19 58.41 8 14 1.45 5 5 §6.96 0. 02 11. 43 14. 43 57.00 0202 20. 1.05 4. 00 57.05 0. 07 14.00 17,00 57.00 0, 02 3.98 6.97 57.01 0. 03 16. 53 19. 52 57.01 293 7.12 10, 12 57.00 0. 02 13. 17 19.49 8 it 2252) -§ 5 ge97 O08 10. 50 13. 49 57.01 0.03 13, 17 26.53 8 II 29.57 5 5 56.96 0. 02 13.55 16,58 56. 97 0. OI 29. 00 32. 00 57.00 0, 02 16,72 19. 69 57-03 0. 05 32. 50 35-50 57. 00 0, 02 19. 64 22. 62 57.02 0. 04 35. 89 38. 90 56. 99 0, OL 22. 82 25. 80 57.02 0. 04 25.70 28.74 56. 96 0. 02 38. 00 eRe ee ee As 42. 49 45.50 56. 99 0. OI 29. 10 32. 10 57.00 0. 02 13, 17 45.54 8 11 48.56 5 5 56.98 0, 00 13 20 32.00 8 14 35.07 5 5. «(56.93 0, 05 11959 Dp L——15 114 TELEGRAPHIC DETERMINATION OF LONGITUDES Time signals received at Panama in the comparison between the Libertad and Panama chronometers—Continued. Signals sent from Signals received at Signals sent from | Signals received at : Date. La Libertad. Panama. Difference. #, Date, La Libertad. Panama. Difference. a; Chron. No. 1470. | Chron. No. 1295. Chron. No. 1470. | Chron. No. 1295. © ees / bone ue 1884. Te ne SO hm. ae AMS, S. 1884. hem. S. he om. Ss he Mm. : S. Mar. 23 13, 20 35.25 | 8 14 38.30 5 5 «56.95 0.03 || Mar. 24 13 39 45.84 8 33 48.26 5 5 «57.58 0. 04 38. 45 41.45 57.00 0, 02 48. 66 51.00 57. 66 0, 04 13 20 41.60 8 14 44.65 5 5 56.95 0703 51.40 53-73 57-67 0, 05 Mean difference, 74 signals 5 5 56.985) +0. 003 54. 38 58. 58 57-70 88 Ree oa | Ge ear 39 57-44 33 59.85 57-59 0. 03 : 40 0.62 34-3. 10 57.52 0. Io 38 0. 45 S92 6. 10 57. 62 0. 00 one 7.00 49 57.51 o.11 B30 13 40 10,96 8 34 13.31 5 «5 (57. 65 0. 03 8. 88 11.54 13 40 16.97 8 34 19:40) 5 5 57.57 0. 05 14. 40 ‘ Baas 19. 82 22. 19 57.63 0. O1 16, 85 8 32 19.20] 5 5§ 57.65 0. 03 23. 20 25-57 57-63 ORO1 19. 50 21. 83 57. 67 0.05 | 26. 45 28.74 57-7! 9. 09 22. 20 24. 60 57. 60 0, 02 29. 62 32. 00 57. 62 0. 00 25.09 27.47 57.62 0. 00 32-74 35-00 57-74 0.12 27.94 30. 29 57. 65 0. 03 | 35. 70 38. 09 57-61 0. or 30. 83 33- 20 57. 63 0. OI 38. 60 40. 97 57. 63 0:01 33-59 35.92 57. 67 0. 05 41.53 43- 89 57. 64 0. 02 13. 38 37.12 8 32 39.60) 5 5 57.52 0. 10 44. 23 46. 61 57. 62 0. 00 13 38 44.00 8 32 46.49 5 5 (57-51 0. II cai ae oe os 50. 00 52. 38 57.62) 0. 00 47.10 49. 43 57.67 0. 0§ 50. 19 52.53 57. 66 0. 04 | 55:08 ee, 57:58 oe | 55-49 34 58.00 57.49 0.13 5? 57 oe o2 arse ia! 13 40 58.28 8 35 0.69 5 5 57.59 0. 03 54. 80 57.21 57-59 0. 03 57.28 32 59.61 57. 67 0.05 | 13 41 4.38 8 35 6.90 5 5 57-48 0. 14 38 59. 68 33 . 00 57.68 0. 06 | 7.89 10. 30 57-59 0, 03, 39 ~=—-2,.00 4.41 57-59 0. 03 i II. 29 13. 69 57. 60 0. 02 4.75 7.09 57. 66 0. 04 14. 76 17.10 57. 66 0. 04 7.52 9. 85 57.67 0. 05 | 18. 15 20. 50 57-65 0. 03 10. 09 12. 44 57.65 0. 03 21.00 23.45 57-55 0. 07 12, 67 15.00 57.67 0. 05 23.97 26. 51 57.46 0. 16 15.16 17.50 57. 66 0. 04 26.95 29. 40 57-55 0. 07 17.53 19. 93 57. 60 0. 02 29. 98 391 39) 57. 65 0. 03 13 39 20.92 8 33 23.50 5 5) «57-42 0. 20 33-40 35.78 57.62 0. 00 13 39 28.16 8 33 30.54] 5 5 57.62 0. 00 gn80 39- 16 57. 64 O02 30. 94 33-31 57. 63 0. OI ga 04 42200 57-64 0: 02 33-57 35- 90 57.67 | 0.05 aes ae pe ae 36. 41 38. 72 57. 69 0.07 45-46 47. 86 57. 60 0, 02 39- 40 41. 76 "57.64 | 0.02 BS GE GE BOL! BRS Bia GG ByeeR:| ee 13 39 42.42 8 33 44.80 5 5 «57.62 0. 00 Mean difference, 68 signals . . . | 5 § 57.616) -b0, 005 Date. 1884. Mar, 22 Signals sent from Panama. Chron. No. 1295. Ayom. ae .10 57 .50 . 20 04 39 . 20 40 1.20 7.20 04 80 40 Io. 12. 15. 18, 20. 30 28. 31. 34- 37- 40. 43. 46. 4g. 08 52. 54. 40 SO Ss! 20 - - 20. 22, 25. 27. 30. 33- 36. 38. 4l. 44. 46. 49. 52. 55- 58. o2 42 76 70 60 8 41 50 8 42 7.00 9. 28 12. 14. 17. 98 20. 72 22 8 42 o2 30 | 21! IN MEXICO AND CENTRAL AND SOUTH AMERICA. 1 ss . } Signals received at | La Libertad. Chron. No. 1470. he om, Sy . 38 82 59 31 59 46 48 4.42 31 10. 00 51 . 29 17.59 25. 28. 31. 34- 37- 40. 43- 46. 45 48. 52. 55. 45 58. 40 oT. “sr 12. 13 13 46 29 30 30 22 52. 54. 46 57. 3. 68 49 47 ‘7 > 13 26 80 40 86 43 II 29 82 7O 17. 19. 22. 24. 27. 30. 33: 35: 38. 4. 44. 47. 49. 52: 55- 13 47 00 13 47 13 48 6. 12. 15. 13 48 18. 3t St 43 39 | 35: 21; | | | | 1? oI 78 | | Difference. is Nhs 3s 38 32 39 27 39 26 31 22 27 20 57: 57. 57- 57. 57. 57- ; 57- 57- 57: 57: 57- 57- 57- 57: 57: 57- 57: 57: 57: 57: 57- II 29 29 31 21 22 29 20 25 30 24 41 33 57: 57- 57- 57: 24 14 26 34 29 24 23 II 27 08 28 33 45 30 24 25 29 57: 57: 57: 57: 57. 57. 57: 57. 57: 57. 57. 57: 57- 57: 57: 57: 57: 57: 57: So fp oO 8 Fo 9.8 oO oO 8 Oo O02 9 O-o Bo It 05 12 oo 12 Ol 04 95 oo 7 16 02 02 04 06 95 02 o7 02 93 0. 03 0. 06 Oi 10") Oh Oe (O10 G2 On Oe 0 OOOO 8 o 99 9 9 o3 13 ol 07 o2 03 04 16° 19 ol 06 93 03 02 02 28 04 26 Il 06 Signals sent from Time signals recetved at La Libertad in the comparison between the Panama and Libertad chronometers. Signals received at 115 Date. Panama. La Libertad. Difference. a Chron. No, 1295. | Chron. No. 1470. 1884. A Mm. a A. Mm. ca Tis), iB! 5. Mar. 22 8 42 23.69 15 48 20.92 5 § 6723 0. 04 26. 64 23. 92 57.28 0. OL 29. 49 26.79 57-30 0. 03 32. 40 29. 66 57-26 0. OI 35.00 32. 15 57-15 0, 12 38. 03 35.48 57.45 0. 18 41.11 38. 38 57.27 0. 00 44.09 41. 43 57+ 34 0. 07 8 42 46.99} 13 48 44.31 5 5 57-32 0. 05 8 42 55.16 13 48 52.60 5 5 C57 44 0.17 42 57. 36 48 54.85 57-49 0. 22 43 0.04 os 2.99 49 0.25 57.26 0. O1 5.89 3.11 57.22 0.05 8. 80 6. 00 57.20 0. 07 11. 84 9. 04 57.20 0. 07 14. 58 18. 14 15. 38 57. 24 0. 03 21.25 18.50 57.25 0. 02 25.00 22. 30 57. 30 0. 03 28.17 25.45 57. 28 0. OI 31.57 28. 84 57-27 0. 00 34-73 32.00 57-27 0. 00 8 43 3800] 13 49 35.40/ 5 5 57.40 0. 13 Mean difference, 68 signals. . . 5 5 57-274, 0. 008 Mar. 23 8 4 32.88 13 10 30.83 5 5) (57-95 0.07 35-85 33. 80 57-95 0. 07 38. 94 36. 81 57. 87 0. OF 41. 96 39. 91 57-95 0. 07 44. 69 42. 66 57-97 0. 09 47.71 45. 62 57-91 0. 03 50. 50 48. 38 57-88 0. 00 53-58 51. 38 57. 88 0. 00 56. 61 54-53 57-92 0, 04 59.58 Io 57.44 57. 86 0. 02 5 2.62 II 0.49 57. 87 0. Or 5.50 3.42 57-92 0. 04 9. 28 7.09 57.81 0. 07 12.45 10. 30 57-85 0. 03 8 5 15.61) 4.13 11 13-45) 5 5 57-84 0. 04 8 5 27.53 13 II 25.50 5 5 57-97 0. 09 30. 30 28. 29 57-99 O11 33-49 31. 35 57. 86 0. 02 36. 75 34.57 57. 82 0. 06 40. 18 38. 00 57. 82 0, c6 43. 58 41. 45 57.87 0. O1 46. 65 44. 51 57. 86 0. 02 50. 00 47.90 57.90 0. 02 53.12 50. 99 57. 87 0, Or 56. 09 |. 53-99 57.90 0, 02 8 5 59.41 13, 11 57.25 5 5 57-84 0. 04 Time signals received at La Libertad in the comparison between the Panama and Libertad chronometers --Continued. Signals sent from | Signals received at ' _ La Libertad. ' Chron, No. 1470. Panama. , Chron. No. 1295. NO NN DD N 12. 15. 18. 21. 24. 28. 31. 34- 38. 4l. 44. 48. SI. . 32 8 7 59. 8 8 II. 14. 17. 20. 23. 26. 29. 32). 35- 38. 42. 45. 48. 50. 8 8 53. »49 +73 9.29 . 28 74 hh. 13 13 13 13 13 13 13 Se ° 10. 18. 21. 24. 27 31. 35: 38. 41. 44. 47. 50. 53- 57- 10. 13. 16. 19. 22. 26. 29. 33, 35: 39- 42. 46. 49. G2. 57- 12. 15. 18. 2i. 24.67 27); 30. 33: 36. 39: 43. 45. 48. 51. “I Gs Difference. Date. sor Ss ish yj 1884. 57.84 0. 04 |! Mar. 24 | 57.86 0. 02 ; 57. 80 0. 08 57. 83 0. 05 57.96 0. 08 57:85 0. 03 57.90 0. 02 57-85 0. 03 57-85 0. 03 57-94 0. 06 57-91 0.03 57-80 0. 08 57-93 0. 95 57. 80 0. 08 57. 86 0. 02 57. 86 0. 02 57-87 0. O1 57. 82 0. 06 57. 82 0. 06 57.90 0. 02 57-93 0. 05 57-93 0. 05 57-93 0. 05 57.88 0. 00 57.90 0. 02 57-91 0. 03 57-93 0. 05 57-83 0. 05 57-89 0. O1 57-89 0, OL 57.84 0. 04 57. 87 0.01 | 57. 89 0. OI 57.91 0. 03 57. 84 0. 04 57.90 0. 02 58. 18 0. 30 58. 00 0. 12 57-86 0. 02 57. 86 0. 02 57-84 0. 04 57.86 0. 02 57-85 0. 03 57-99 O.4T | 57-85 0. 03 | 57-85 0.03 57. 81 0.07 || 57. 88 0.00 | 5 57-85) 03 | Mean difference, 75 signals. . . G5. 57% 884, £0. 005) 26 27 27 27 27 28 28 28 28 29 29 29 19. 22. 25. 27. 31. 34- 38. 41. 45. 48. 51. 53: 56. 59- 10. 12. 15. 18, 21. SO tS Signals sent from Panama. Chron. No, 1295. +93 43- 46. 48. 51. 54. 56. 58. . 60 69 23 go 00 40 go 49 64 12 65 -10 -99 .51 .18 . 68 . OO 95 45 07 co 89 58 . 40 TELEGRAPHIC DETERMINATION OF LONGITUDES Signals received at La Libertad. Chron. No, 1470. iom. 13 32 32 33 13 33 33 34 13 34 13. 34 34 13 35 13° 35 13, 35 Se 39. 42. 44. 47. 49. 52. 55. 57. oO, 10. 13. 15. 32. 35- 37: 40. 43. 45. 48. 51. 53- 56. 59- 10. 17. 20. 23: 26. 29. 33- 36. 40. 43- 46. 49. 52. 55- 58. Il. 13. 16. 19. 72 Difference. 51 53 59 54 51 . 46 . 46 50 25 er) 51 . 40 57 54 . 90 . 50 51 .56 52 »35 . 48 . 50 .10 -59 +59 . 50 . 48 .71 -45 55 . 56 . 28 . 46 54 -55 54 .50 ~51 +53 52 .52 -55 5 58.52 2 e2s929799999999999 9999999999999 89 9 eog0e9999999 999 9 9 BG © 6 6 . O4 . OL . OF 07 02 o1 08 06 06 06 02 27 03 ol 12 95 02 38 02 or 04 17 04 o2 42 07 07 o2 04 19 07 93 04 24 06 02 93 02 02 o1 o1 - OO . 03 99 28 04 20 IN MEXICO AND CENTRAL AND SOUTH AMERICA. Time signals recetved at La Libertad in the comparison between the Panama and Libertad chronometers—Continued. 117 t \ | Signals sent from Signals received at Signals sent from | Signals received at Date. Panama. La Libertad. Difference. u. Date. Panama. La Libertad. Difference. v. Chron. No. 1295. | Chron. No. 1470. Chron. No, 1295. | Chron. No. 1470. 1884. hem, se 4 he om. Se A. om. 3 S. 1884. he Mh. D. hm. $e A, om. S 5. Mar. 24 8 29 24.09 13 35 22.60 5 5 «58.51 0.01 || Mar. 24 8 30 7.00 13 36 5.54 5 65 C58. 54 0. 02 26, 98 25.49 58. 51 0. 01 9. 60 8.09 58. 49 0. 03 29. 93 28. 43 58. 50 0. 02 12.47 10. 90 | 58. 43 0. 09 32. 86 | 31. 52 58. 66 0. 14 15.31 13. 86 58.55 0, 03 35-79 | 34. 31 58. 52 0. 00 18. 08 16, 67 58.59 0.07 38. 79 | 37. 37 58. 58 0. 06 20. 70 19. 26 58. 56 0. 04 41.80 40. 40 58. 60 0. 08 23.74 22. 23 58. 49 0. 03 : 44. 68 43. 28 58. 60 0. 08 26.75 25.26 58. 51 0. O1 47.59 | 46. 08 58. 49 0.03 29. 52 28. 20 58. 68 o. 16 | 8 29 50.45 13 35 49.00 5 5 58.55 0. 03 32. 50 31.00 58.50 0. 02 8 29 59.00 13 35 57-55) 5 5 5855| 0.03 35-38 | 13 36 33-95) 5 5 S857) 05 30.2O«d. 50, 360 OO. II 58. 61 0. 09 S Be: 38-97 fora atte a slibee e 8 30 4.23 13 36 2. 81 5) 6558. 58 0. 06 Mean difference, 74 signals -| 5 5 58.524) +0. 008 Automatic time signals received at La Libertad in the comparison between the Guatemala and Libertad chronometers. Signals sent from | Signals received at : Signals sent from | Signals received at Date. Guatemala. La Libertad. Difference. Date. Guatemala. La Libertad. Difference. Chron. No. 1527. Chron. No. 1470. Chron. No. 1527. Chron. No. 1470. A. mS. he Mt. a he om. 3 hom S. he om 5 hom S$. Mar. 25, 1884 II 49 1.00 16 42 38.88 4 53 37.88 Mar. 27, 1884 11 8 3,00 16 1 35.55 4 53 32-55 2. 00 39. 88 37. 88 8. 00 40. 55 32.55 3.00 40. 88 37. 88 8 29.00 2 1.55 32. 55 49 4.00. 42 41.89 37. 89 9 29.00 3 ESS 32. 55 59 1.00 43 38.90 37.99 IT 10 33.00 16 4 5.55 4 53 32.55 Il 51 1.00 44 38.89 4 53 37-89 a Mean difference. . 2... - 6. ee tt eee 4 53 37-887 Se ae ee a ee 4 53 32.550 Automatic time signals received at Guatemala in the comparison between the Libertad and Guatemala chronometers. Signals sent from | Signals received at . Signals sent from | Signals received at Date. La Libertad. Guatemala. Difference. | v. Date. La Libertad. Guatemala. Difference. v. Chron. No. 1470. | Chron. No. 1527. | Chron, No. 1470. | Chron. No. 1527. 1884. A, thes he the Se A, me S Se 1884. he Me Se Ae me Ss Am ° Mar. 25 16 1 56 1 =68 Ss 18.07 4 53 37-93 0.03 |} Mar. 25 16 2 14 ir 8 «36,12 4 53 37.88 0. 02 57 19. 10 37. 90 0. 00 15 37.12 37. 88 0. 02 58 20. 10 37.90 0. 00 16 38. 10 37.90 0. 00 1 59 21.10 37-90 0. 00 17 39. 10 37.90 0. 00 2 1 23.10 37. 90 0. 00 20 42. 12 37. 88 0. 02 2 24. 08 37-92 0. 02 16 2 23 Ir 8 45.10 4 53 37-90 0. 00 3 25.11 37. 89 SOE 16 2 24] Ir 8 46.10) 4 53 37-90 0. 00 4 26. 12 37. 88 02.08 25 47.12 37. 88 0.02 5 27.12 37. 88 07 02 26 48. 10 37.90 0. 00 16 2 6 rr 8 «628,11 4 53 37-89 0, OI 27 49. 11 37. 89 201 16 2 7 Ir 8 29,10 4 53 37-90 0. 00 28 50. 09 37.91 0. O1 8 30. 09 37-91 0. OI 29 51.10 37-90 0. 00 9 31.10 37-90 0, 00 31 53.12 37. 88 0, 02 16 2 13 Ir 8 35.09 4 53 37-91 0. OI 16 2 32 ir 8 54.10 4 53 37.90 0. 00 . TELEGRAPHIC DETERMINATION OF LONGITUDES Automatic time signals received at Guatemala in the comparison between the Libertad and Guatemala chronometers —Continued. Signals sent from Date. La Libertad. ' Chron, No. 1470. 1884. Ts UB” Ss Mar. 25 | 16- 2.33 16 2 34 Oo An fWN 22 23 16 3 «24 16 3 33 35 39 48 49 | 5° 16 3 SI 16 3 «52 53 55 56 58 59 ao of 2 1 4 3 w 35 36 37 38 39 40 41 42 16 4 43 Mar. 27 16 12 22 23 25 27 28 36 40 41 42 16 12 50 52 36 | 38 | 57 3 16 4 34) 34 16 12 49. | 53 | | 16 12 55 Signals received at Guatemala. | Chron. No. 1527. | t A. II II Il It Il It II Il II II Il II Il MM. oo oO 10 10 10 10 10 Mean difference, 70 signals 18 18 19 19 19 19 OR SR Gan We is ° oO 49. 51 50. 53 52.54 54-53 55-52 - 3-53 7-53 8.53 9-55 16. 53 17.51 19. 53 20. 52 22. 52 I Signals sent from | Signals received at Difference. wv, Date. La Libertad. Guatemala. Difference. v. Chron. No. 1470. | Chron. No, 1527. he m. se 6 1884. ho me. A mS. he om. a 2 4 53 37-92 0.02 || Mar. 27 16 12 58 Il 19 25.52 4 53 32.48 0. 00 4 53 37-90 . 0, 00 12 59 26. 53 32.47 0, O1 13 1 28. 51 32. 49 0. OI 4 53 37-91 ete 2 29. 51 32.49 0, OL 37-92 O02 4 31. 53 32. 47 0. O1 37-99 OeO8 16 130 5 Il 19 32.53 4 53 32-47 0. O1 37-91 v. OL 37- 89 0. OI }, 16 13 6 Il 19 33-53 4 53 32.47 0. O1 37.90 0. 00 || 7 34. 53 32.47 0. O1 37-91 0. O1 8 35.52 32. 48 0. 00 37-91 0.01 II 38. 51 32. 49 0. O1 37.90 0. 00 12 39-51 32. 49 0. OI 4 53 37-91 0. OL 13 40. 51 32. 49 Oo, OI 14 41.51 32. 49 0, O1 4 33 30° ee 15 42. 51 32. 49 o. OL ee eal 16 43.51 32.49 | 0.01 37-89 aera 16 13 17 Ir 19 44.51 4 53 32:49 0. O1 37. 89 0, OI 37. 88 0. 02 16 13 18 Ir 19 45.52 4 53 32.48 0. 00 37. 88 0, 02 | 19 40. 52 32. 48 0, 00 37. 88 0. 02 20 47-53 32. 47 0, OI 37. 89 (0. O1 ai | 48. 52 32. 48 0, 00 37-99 ©: 20 22 49-53 32. 47 ©. 01 4 53 37-90 0. 00 23 50. 53 32. 47 0. O1 24 51.53 32. 47 0. oF 4 53 37-91 On0e 25 52. 52 32. 48 0. 00 37:91 9003 26 53-51 32. 49 0. OF 37: 9° Oe 16 13 27 Il 19 54.53 4 53 32-47 0. O1 37.90 0. 00 37. 88 0. 02 16 13 38 Il 20 5.52} 4 53 32.48 0. 00 37-99 ©:,00) 39 6. 52 | 32. 48 0, 00 37-89 OnOL 44 11. 53 32.47 0. O1 37.90 0. 00 45 12.52 32. 48 0. 00 37-99 9. 00 46 13. 53 32.47 0. OL 4 53 37.90 OR02. 47 14. 53 32.47 0. O1 i 48 15.52 32. 48 0. 00 ee = _ i 49 16. 53 32. 47 0. O1 rs 5 ee 50 17. 53 32.47 0. o1 37.92 O62 | 16 13 52 Il 20 19.53 4 53 32-47 0, OL 37-89 0.01 | 16 13 59} II 20 26.53| 4 53 32.47 0.01 37-99 8:09 14 I 28. 51 32.49 0, O1 37. 9° 2280 2 29. 52 32. 48 0.00 37-91 Oe 0% 5 32. 51 32.49 0. OL 37-99 O80 6 33. 53 32. 47 0. 01 Boe. en es 7 34-53 32.47 | 0.01 4 53 37-899) 0.001 | 8 35-53 32. 47 0. Or ‘ 9 36. 54 32. 46 0, 02 4 53 32-49 Our 17 44.54 32. 46 0. 02 32.47 201. 16 14 18 Il 20 45.53 4 53 32.47 0. O1 32. 46 0. 02 32.47 0. 01 |. 16 14 19 Il 20 46.53 4 53 32-47; 0. O1 32. 48 0. 00 jj 20 47.52 32. 48 0, 00 32.47 0. 01 21 48. 53 32. 47 0. O1 32. 47 0. O1 22 49. 52 32. 48 0. 00 32. 47 0. O01 || 23 50. 53 32.47 0.01 32.45 0. 03 ‘| 26 53-52 32.48 0, 00 4 53 32-47 0. OF | 27 54.51 32. 49 0, O1 . 28 55-51 32. 49 0, O1 4 53 32-49 woe | 29 56.52 32. 48 0. 00 32.47 OOF 16 14 30 11 20 57.52 4 53 32.48 0. 00 32. 48 0. 00: | 4 53 32.48 0. 00 | Mean difference, 70 signals 4 53 32-477| -k0. 001 OBSERVATIONS FOR LATITUDE. 120 TELEGRAPHIC DETERMINATION OF LONGITUDES Latitude of observing station, Vera Crus, from zenith telescope observations by Lieut. Commander C. H, Davis. | 3 Corrections, Date. ane Apparent declination. ett Sr a Latitude. Us | Micrometer. Level. Ref. 1883. o + wr oF wy / uw yt uw o UF wt wy April 10 | B. A.C. 341 8 36 1. : | = — : A Ss +19 14 41.22 —2 25.72 —0. 75 —0. 03 Tao Se Bese o 37 | 3606 14 43 57-29 8 3671 23 47 48.56 19 15 52.92 —3 39-30 +1. 51 085 Ege ESD S13 I 6 a - : ae 19 10 38.50 +1 35.26 +0. 50 +o, 28 19 12 14.29 0, 06 6 : ee z a ¥: I9 12 1.52 +o 14, 60 +0. 75 +o. 00 Ig 12 16.87 2.52 April 11 2999 32 54 34.16 3105 5 33 13.21 19 13 53.68 —I 40,11 —2. 51 —0. 03 Ig 12 13.29 1.06 6 . 68 6 . 98 op ? - . . 19 19 43-02 —-7 27.53 +9. 75 = 0:13 i ni76 S 5 i 19 15 35.28 —3 21.34 —0. 50 0:05 19 12 13.39 woe 3415 8 36 1.10 . 3500 29 53 21.45 19 14 41.28 —2 26.56 —0. 25 —0. 04 I9 12 14.43 0. 08 April : April 1 . pril 13 mes . : a 19 13. 53.76 —1 43.15 +3. 69 —0, 03 Ig 12 14.27 0. 08 a ee | oe - : pe ig aa age —7 23.78 —5.03 —0. 13 19 12 14.16 0. 19 : ae 19 15 35.88 —3 21.32 —O. 25 —0.05 Ig 12 14.26 0. 09 April 14 on sf : nee 19 13 53.78 —1 35.90 —-3. 52 —0, 03 Ig 12 14.33 0. 02 ie ‘ 8 ou 19 14 50.95 “8 S38 =a mee I NEE) 83 . 56 ae : : 19 15 35.44 —3 21.76 —0. 53 —0. 05 BQ hi ENS 122 ne ‘ a 19 14 41.43 —2 26.42 —2.01 6.04 ag Te tae 333 3500 ; . 46 oy : : : a 19 15 53-17 —3 40. 83 +1. 01 —0. 05 19 12 13.30 1:05 3 iw. B. A.C ae ae : a +19 12 1.85 +0 16.31 —2. 25 | 0. 00 ae Ae AO Hoe . A.C. 40 . Mean (21 determinations) ©. 6 6-6 et ee +1g 12 14.35 bo. 15 IN MEXICO AND CENTRAL AND SOUTH AMERICA. 121 Latitude of observing station, Valparaiso, from zenith telescope observations by Lieut. Charles Laird. Corrections. Date. Soe a Apparent declination. aia oe Latitude. uv Micrometer. Level. Ref. 1883. o 7 u" ° yout 7 uy uw ° / uw 7 ” Nov. 26] B. A.C. 230 —I4 II 27.16 8 P —32 25. 82 — : — 4. —o, — ; I, 238 st. 37 24.18 32 54 25 7 44.74 4.13 0. 13 33. 2 «14.62 45 743 27 31 «(24.12 : — : —i1. —o, . 6 ? ais sa ago Ran 33. 0-28.94 1 43.82 I.g0 0, 03 33. 2 «14.69 1.58 8 I : . P be 33 2 «31. 88 + 18.81 —- 5.06 0, 00 33. 2 «217.12 0. 85 89 4O 24 48.14 is ae 4g apexe 33. 438. 64 +2 29.22 — 8.57 + 0.14 33-2 «17. 85 1.77 8 8. 964 35 52 28.95 33 3 26. 12 +1 11.30 — 1.90 + 0.02 33. 2 16. 7O 0. 43 1005 30 14 23.30 : 1104 22 =I 27.16 33 3 49.90 +1 35-35 — 3-17 + 9.03 339 2 «17-71 1.44 1118 44 6 12.65 1179 29 42 4.10 : 2 23.70 78 . 0, 2 18.41 2.1 dant 5B ap Set 33. 4 «59.93 +2 23.7 +17-7 ++ 0.04 33 4 4 Noy. 28 230 14 II 27.20 6 238 oe 32 54 26.00 —7 50.46 — 1.27 — 0.14 33 2 «17.87 1. 60 a a - 32 59 12.29 —2 46.16] —17.14 | — — 0.05 a oe as . - ss a 33. «I: 23.26 — 43.25 — 8.57 — 0.01 33. 2 «15.09 1.18 : = 2 2 , 2 33. «I 41.50 — 29.90 — 2.54 — 0.01 33. 2 «13.95 2. 33 3 . es : A ss a 0) 2833 Sa ycee — 2.54 —~ 0.03 33. 2 «16.07 0. 20 I 3 9 : 47 1 a. Bae, oes + 9.78 4 8.25 0. 00 33. 2 «14.20 2.07 5 19) 63 . 984 35 52 ae ag. & Bee 441 21.76 11.43 + 0.02 33. -2«16.27 0, 99 1005 30 14 23-7 a 22 : 27.60 ae ee 41 38.24 — 2.54 + 0.03 33 2 «14.68 1.59 It 44 13. 23 i . is 33 5 8.47 +2 57.05 —I2. 70 + 0.05 7 33.) 2 EGS O7 1. 30 I19) 36 27 50. 32 Dees & fi ap a Bee? 32 §9 «13.12 —2 56.57 — 6.98 — 0,05 33. 2 «16.72 0. 45 3 35 49 25-05 a ip 245 S90 32 §8 30.50 —3 38.72 — 7.62 —o. 06 33 2 16.90 0. 63 53 16 33 0.10 541 25 38 4.23 33 «1 24.02 _- 46. 36 — 7.30 —0. OI 33. 2 17.69 I. 42 570 40 24 43.81 618 21 38 31.62 a ee —1 59.18 — 2.23 0. 03 332 «417-11 0. 84 678 44 21 59.72 699 41 42 37.73 33. «1 «41.43 — 39.89 ; 4 3.81 —o. Oo! 33 2 17-52. 1. 25 737 24 20 45.14 ae ee —33 0 30.26 —1 46.85 + 0.63 0. 03 pie Be aM oe B. A.C. 818 —38 29 35.21 11959 p L——16 122 TELEGRAPHIC DETERMINATION OF LONGITUDES Latitude of observing station, Valparaiso, from senith telescope observations by Lieut. Charles Laird—Continued. Corrections. Date. sa Apparent declination. Boe Ne Latitude. v. Micrometer. Level. Ref. 1883. o 4 uw oc £ , i u uw o 4 uw ” Dec. 2} BLA.C. 843 —47 1 8.80 aS 20. — 1.90 0. 00 —- 2°14. 81 1. 46 856 19 4&7. 80 33. 2 33-30 ae 39 9 33 4 me fee A 55 +2 53.60 g. 21 bo. 05 33. 2 «16.11 0. 16 I. : — 9. : . : 1196 36 27 «257.44 335 Dec. 5 493 49 24 1.41 2 58 30.98 —4 0.43 +16. 51 —0. 07 33. 2 4.97 I, 30 536 16 33 0.55 eee re 541 25 38 4.69 Sa. Gi Shy 52.77 + 0.32 —0o. OI 33 2 «17.03 0. 76 57° 40 24 44.46 699 41 42 36.54 @ — 8.58 : —o, OI 2 15.86 0. 41 737 24 20 46.86 33. 1 41.70 39-5 + 4.44 33 4 743 27, 31 25.97 33. 0 «30.97 —I 50.84 + 3.81 — 0.03 33. 2 «18.03 1.76 818 38 29 35.97 = : / 843 47 I 9.72 . 66 — 25.6 — 6.98 0. O1 2 14.98 1.2 856 19 3. 57.60 33 2 «33 5.65 9 a 33 5 Dec. 9 541 25 38 5.41 I 25. — 50.47 — 1.42 —0. 03 33. 2 «17.25 0. 98 570 40 24 45.26 = : = 618 8 .78 21 30 32.7 33. «0 «16.55 —2 2.78 + 1.90 —0. 03 33 2 «17.46 1.19 678 44 22 1.33 699 41 42 38.82 I 42.36 — 24.87 — 7.62 —O. OI 33 2 14.86 1.41 737 24 20 45.91 - ? 743 27 31 26.77 8 —I .6 — 0.6 —0.0 2 16.1 0. 12 818 ge a: see 33. 9 31.95 43. 01 3 3 33 5 843 47. 1 «10.66 ‘ 6. —17. 0. OI 2 15. i 856 16. 58.85 33. 2 34.77 + 36.30 7-47 ote 33 5-93 v. 34 893 40 24 51.4 ee 33 4 «441.73 —2 26,12 — 0.32 Lo. 04 33 2 15.33 0. 94 940 25 44 31.97 8 . eon ae 82. dere] 33 3. «29. 84 +1 15.71 — 1.90 +o. 02 33 2 «16.01 0. 26 1005 30 14 26.42 1104 22 I 30.05 : pe ; : : oF : : : —1. 0 2 15. . 61 a8 ie Hb 33 3) (53-25 39. 13 59 +0. 05 33 5 9 1179 29 42 9.73 i 2 5 : f . . 8 1196 36 27 59.36 33 5 4.54 +2 45.54 + 3-50 +0, 05 33 2 15.44 0. 03 Dec. 10 541 25 38 5.59 33. «I 25.53 —O 45.95 — 3.81 —o. OI 2 15.30 oO. 570 40 24 45.47 a ve a 618 21 38 32.94 Oo 17.2. —1I 58.2 0.6 —o. . 86 5 678 4x ee xb 58 33 7. 24 59. 22 ae 3 0. 03 33 2 «14 1.41 743 27 31 26.57 Oo 31.8 —I1 . 82 — 6.6 —o. 8. 818 38 29 37-13 a3 ane 39 7 0. 03 33 2 18.37 2. 10 843 47. 1 «10.88 33. 2 34.97 + 25.90 — 6.40 +0, o1 33 2 «15.46 o. 81 856 19 3 59.07 , 8 40 24 51.71 93 33 4 «41.93 +2 24.95 0, CO +o. 04 33 2 16.94 0. 67 940 25 44 32.16 984 35 52 32.49 — 29. 56 I 19. 68 — 5.40 0. 02 — 15. 26 . ol Ae gone 30 14 26:63 33 3 29-5 =e 9 5-4 ate 33 3° «15.2 1.0 IN MEXICO AND CENTRAL AND SOUTH AMERICA. 123 Latitude of observing station, Valparaiso, from zenith telescope observations by Lieut. Charles Laird—Continued. Cc tions. Date Number and | 4 as Half sum of declina- ears , . catalogue. pparent declination, snk: Latitude. aie Micrometer. Level. Ref. 1883. Oe OF w o + wr , w wu yw o + yt aw Dec. 10] BL. A.C. 1104 —22 30. 25 118 44 6 16,72 —33 3 53-48 +1 40.71 — 1.90 +0. 05 —33 2 14.62 1. 65 1179 29 42 «7.64 1196 36 27 59.61 33 «53. 62 +2 51.05 — 3.81 +o. 05 33. 2 «16.33 0. 06 Dec. 19 699 41 42 40,66 937 24 20 47.50 33 «I 44.08 — 35.27 +17. 46 —0. O1 33 2 «16.26 0. O1 743 27 31 «28.43 818 38 29 38.95 33 9 «33.69 —I 42.72 — 1.90 —0. 03 33 2 «18.34 2.07 843 47. 1 12.98 856 ie. oe Oa 33 2 «36.91 + 16.74 + 3.81 0. 00 33 2 «16.36 0. 09 893 40 24 53.65 eae Be an 99.84 334 «43-74 +2 26.11 — 1.27 +o. 04 33 2 «+17.86 1.59 984 35 52 34.48 1005 30 14 28.52 33 3. «O31. 50 +1 14.74 + 1.14 +o. 02 33 2 «15.60 0. 67 1114 22 I 32.08 : 4 ° eae aay SSS ee 33 3 «55-57 +1 38.59 0. 00 +o. 03 33. 2 «16.95 0, 68 1179 29 42 «7-47 HUG mon oe ee —33 5 4.65 +2 28.64 +19. 11 bo. 04 —33 2 16.86 0. 58 Mean (53 determinations) ©. --. - 6 ee ee —33 2 16.27 +0. 11 Latitude of observing station, Arica, from xenith telescope observations by Lieut. J. A. Norris. Corrections. Numb d i age Half sum of declina- , Date. cafalGuite, Apparent declination. e Bank: Latitude. vw Micrometer. Level. Ref. 1883. o + uw o + uy , uw uw u" o 4 “wr “w" Oita 28 | Bite: a = Me —18 27 16.42 —I 35.10 +2. 87 —0. 03 —18 28 48.68 0. 34 085 40 20.39 Nee 18 — 18 27 1.31 —1 48.34 0. 00 —0. 03 18 28 49.71 1. 37 35 17 1. Oste, Se - - eee 18 27 16.61 —I1 35.23 +3. 16 —0. 03 18 28 48.71 0. 37 085 40 20. 52 vai 18 = bant2 18 27 2.07 —1 39.81 —5. 63 —0. 03 18 28 47.88 0. 86 35 17 58 52.02 : Oct. “38 a 22: OA 43° i 18 30 14.32 +1 23.09 0. 00 —O, 02 18 28 51.25 2.91 791 14 5 44. nee 14 12.84 18 27 16.71 —1 32.87 4-2. 07 -bo. 03 18 28 47.48 0. 86 085 40 20.59 i 18 2 12. 25 18 27 2.19 --1 47.93 +1. 09 —0. 03 18 28 48.06 0. 28 835 17 58 52.14 Nov. 4 7992 - 14 13-35 18 27 17.05 —I 29. 82 +0. 17 0. 02 18 28 46.62 1.92 8085 40 20.75 aie 18 a . - —18 27 2.54 —1I 43.62 —0. 92 —0, 03 —18 28 47.11 1. 23 B. A. C. 835 —17 5 2.55 —18 28 48. 34 ~h0. 32 Mean (9 determinations) Poa 124 Latitude of observing station, Lima, from senith telescope observations by Lieut. J. A. Norris. TELEGRAPHIC DETERMINATION OF LONGITUDES Corrections. Date. ee Apparent declination. el me ee ene: Latitude. Vv Micrometer. Level. Ref. 1883. ° sow ° , wy / ur uw wt ° yw uw Dec. 16) B. A.C. 1049 —24 3 18.15 = : _— 6. . 06 —0. 0. —12 14. 12 0. 72 ire i 6 51.86 120 0 43.14 2. 39:00 +5. 0 4. 3°14 7 Dec. 21 1049 —24 3 «19.11 8 — : é —o. 0 12 13.2 oO! iii +0 1 51.36 120 0 43.97 2 32.73 +3. 39 0. 04 3 13-25 5 1148 _— A i Ct ee 12 0 2.05 —3 12.82 |- +1. 61 —0. 05 12) 3 13-31 0. 09 1234 13 50 30.40 Dec. 23 618 21 38 34.55 . _— ; i —o. 12 Il. 1.6 677 2 22 20.27 120 0 27.41 2 51.74 +7.47 0. 05 3 73 7 781 15 45 24.50 _— : : . E _— 14.58 1.18 7 oe sg acts 12 2 52.80 —o 21.78 0. 0O 0. 00 12) 3 14.5 Mean (Sdetérminations) 6 22a: .5. 8 Ri a SR wR ae We a a we —12 3 13.40 cho. 32 Latitude of observing station, Paita, from zenith telescope observations by Lieut. J. A. Norris. Corrections. Date. aie Apparent declination. saa ae ae Latitude. wv. Micrometer. Level. Ref. 1884. ov 4 ov, , ow ” ” o + 4 w" Jan. 15 | B. A. C. 1597 — 8 54 25.99 — ; — . 6 —i. —o. — 6. : 1717 i te Heras 5 2 42.32 2 4.64 1.15 0. 03 5 4 56.98 0. 40 1730 O 23 21.64 : 5 3. 8.74 —I 45.08 —2. —0. 0 4 56. oO.1 1843 9 42 §5.84 7 5 59 3 5 50. 44 4 1901 —14 II 37.44 5 0 59.09 —3 56.52 —1. —0. 0 6 1.0 1945 AS B. 39x36 = : Be Ss : 1959 —14 55 48.86 5 8 29.2 3 30.8 0. 6 0. 06 .6 1.0 BOK Sa ae eecae 9. 23 te 5 +0. 69 fe 5 4 57-63 5 2132 —23 20 25.30 8 6% é 2206 +13 0 58.54 2 Bass pa Aer Se E32 +0. 07 5 4 57-7 1,18 Jan. 17 1597 —8 54 26.27 fe 1717 I Ir 16.53 a ae ai 929 +5. 86 —0, 04 5 4 54.87 17! 1730 Oo 23 21.86 ; 8 ae 3 + 92 —I 46.89 0. 00 —0. 0. , 0, 1843 9 42 55.96. 9 3 5 4 55-94 74 1901 —14 II 37.80 e ecupee es i Z F 9. 3 —3 22 1.0 —0. 0' . 62 oO. 1945 +4 9 39.08 3 7 5 4 55 9 1959 —4 $5 49.21 8 29.51 - 98 +3. : 2059 +4 38 50.20 5 9-5 +3 33-9 3: 33 +o. 06 5 4 58.80 2, 22 2132 —23 20 25.73 . 68 8. —3- : 2206 +13. 0 58.36 a 9 ae a ache 3-39 +0. 08 5 4 58.77 2.19 2330 +16 42. 05 I 22. 86 — 8 . 6 5 2388 =56 27.77 j a BE Tees ae 5 4 55.16 a3 Jan. 18 1112 +0 1 49.19 — 8. — é 3, —o. oe B. A. C. 1148 —10 9 36.67 DS Set 59. 44 3-91 0.02 5 4 54.25 2. 33 IN MEXICO AND CENTRAL AND SOUTH AMERICA. Latitude of observing station, Paita, from zenith telescope observations by Licut. J. A. Norris—Continued. 125 Corrections. Numb d ee H a ina- Date. ae Apparent declination. Halt Ri Latitude. U. Micrometer. Level. Ref. 1884. Oh ea ° - hE - tf a uy ° , uy Jan. 26] B. A. C. 1597 —8 54 27.52 1717 I 11 17.60 ub Bo S258 Peed 9) 201 —0. 03 —5 4 56.30 0. 19 1730 Oo 23 22.80 1843 9 42 57.50 BBs ARES 1 46.54 0. 00 —0, 03 5 4 56.66 0. 08 1901 —I4 II 39.42 1945 ee ce ae aes 5 I 0.50 —3 53-47 —I. 32 —0. 07 5 4 55-36 1, 22 2330 --16 41. 61 2388 ae see 5 1 24.33 —3 31.76 +0. 29 —0. 06 5 4 «55.83 0.75 Feb. 2 1730 23 23.47 (Ses ae xa 5 3 10.94 —I 45.36 —0O. 11 —0. 03 5 4 56.44 0.14 1901 14 If 40.38 oe a 5 f 431 —3 54.93 +o. 69 —0. 07 5 4 55-62 0. 96 1959 —14 55 51.94 seks Far hae Ge 5 8 31.54 +3 32.10 +1. 38 +o. 06 5 4 58.00 1. 42 2132 —23 20 29.16 B. Rls Se86 Sy. acess —5 9 45.71 +4 47.85 — 0. 34 +0. 08 —5 4 58.22 1. 64 Mean (20 determinations)... cau ae ce ee a A ee ee —5 4 56.58 ko. 19 Latitude of observing station, La Libertad, from zenith telescope observations by Lieut. Charles Laird. Corrections. Date. ee Apparent declination. a a a Latitude. wv, Micrometer. Level. Ref. 1884. ° 7 4 / 7 tt / 4 tr Mt ° 7 4) 4s ; i AS Ce 0. ; Mat: 28) Br Be ® a sie . = i. +13 28 0.84 + 41.78 +9.75 -Lo. or +13 28 52.38 0, 09 3459 te BY Ae 13 24 55.68 +3 52.93 +4. 00 +0. 07 13 28 52.68 0. 39 3510 +14 18 5.94 3597 ee ay Baeet +13 26 29.47 +2 16.47 +5.57 bo. 04 +13 28 51.73 0. 56 B. A. C. 3660 +26 55 51.71 Mean (3 determinations). © 6 6 6 ee ee ee ee +13 28 52.29 =o. 19 ~ OBSERVATIONS FOR RELATIVE PERSONAL EQUATION. 128 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at the Public Square, Galveston, by Lieut. Commander C. H. Davis, with Transit No. 1504, to determine the correction of sidereal chronometer Negus 1295. “ 5 Flexure Aberra- Seconds a Transit over | and in- i tion and Chronometer Date. Name of star. & | ts |mean of threads.) equality Devel. | Samii cont ate = mee ie correction. oe Sig of pivots. mation. Yee O14 ‘ 1883. him. ss. 5. 5. Ss. s. S. S. Am. Ss. him. 5. Ss. Apr. 30) 7 Virginis. . . .| E. | 7 | 13 23 29.624 |+0. 247 [10,118 |-+ 0.241 [+ 0.911 |—0. 136 | 31.005 | 12 13 57.883 |—1 9 33.122 |+ 0.096 Draconis. . . . 7 | 13 38 2.929 |+0. 636 |+0. 290 |— 0. 966 |+ 2.720 |-0.105 | 5.504 | 12 28 32. 349 [33-155] 31 Coronz Borealis . 7 | 13 55 34-194 |-+o. 321 |+0. 110 |+ o.o11 |+ 1.033 |—0. 068 | 35.601 | 12 46 2.616 32.985 |-- 0.041 e Virginis . 7114 5 55.457 |+0. 286 |+0.085 |+ 0.067 |4 0.930 |—0. 047 | 56.778 | 12 56 23.879 32. 899 |— 0.127 6 Virgins... .| E.| 7 | 14 13 28.027 |+0. 235 |+0.062 |+ 0.277 |+ 0.915 |—0.033 | 29.483 | 13. 3 56.419 |—1 9 33.064 |4 0.038 ¢ Virginis. . . . 7 | 14 38 20.560 |—o. 247 |+0. 271 |-+ 0.151 |— 0.947 |+0. 021 | 19. 809 | 13 28 46.771 |-1 9 33.038 |+ 0.012 t Bootis. .... 7 | 14 51 18.700 |—o. 292 |+0. 350 |4 0.063 |— 0.996 |-+0. 049 | 17.874 | 13 41 44. 860 33.014 |— 0. 012 zt Draconis. .... 7 | 14 57 39.521 |—o. 548 |-+0. 674 |— 0.434 |— 2. 268 |+-0. 062 | 37.007 | 13 48 3.981 [33-026]} .. @d Bootis. .... 4 7 | 15 14 40.417 |—o. 313 |+0. 432 |+ 0,022 |— 1.050 |+0. 098 | 39.606 | 14 5 6.513 33-093 |-+ 0.067 a Bootis..... W.| 7 | 15 19 55.940 |—o. 297 |+0. 421 |+ 0.054 |— 1.007 |+0. 108 | 55.219 | 14 I0 22.223 |—1 9 32.996 |— 0.030 NORMAL EQUATIONS. S. S. Assuming a” =- 0.532 da’ circle E. [ o=+ 0.040 + I. 353 da’ + 0.043 dc + 0. 818 d¢ } whence da’ = — 0,040 a//=+0.414+ da’ « W. + 0, 088 + 0.907 da’ + 0.032 de + 0, 523 bt da// = — o. 106 ¢ =+0.898 + dc “ E, — 0. 376 + 0. 043 Ja’ + 0. 032 da// + 12. 297 dc — oO. 176 dt dc =+ 0.031 AT =— 14 gm 338.045 + d¢ — 0. 039 + 0. 818 da’ + 0. 523 da’” — 0,176 dc + 8. 500 bt d¢ =+ 0,014 a/ = + 08,492 (circle east); a/” == + 08.308 (circle west); ¢ == 0*.929 (+ with circle E.). Chronometer No. 1295, at 145 28m chron. time, 15 9™ 338.026 -& 08.016, fast; losing 0%.123 per hour. Apr. 30| p Bootis. .... E. |} 7 | 15 36 21.106 |+0. 330 |+-0. 221 |— 0.015 |+ 1.168 |—o. 102 | 22.708 | 14 26 49.994 |—1 9 32.714 |— 0.067 Virginis . 7 | 15 46 28.014 |-++o. 234 |+0.147 |+ 0. 264 |4+ 1.007 |—0. 081 | 29.585 | 14 36 56. 721 32. 864 |+ 0.083 47 Cephei (H)S. P. 7| 16 © 10.500 |—0. 463 |—--0. 265 |+ 2.301 |— 5.425 |—0.052 | 6.596 | 14 50 33.981 (32. 715] 3 Serpentis. . : 7 | 16 18 56.570 |+0. 260 |-+0. 129 |+ 0.189 |+ 1.007 |—0.013 | 58.142 | 15 9 25. 343 32.799 |4+ 0.018 3 Bootis. . .| E.| 7 | 16 20 20. 897 |+-0. 339 |+0.167 |— 0.043 |+ 1.206 |—0. 010 | 22.556 | 15 10 49.824 |—I 9 32.732 |— 0.049 6 Coronz Borealis.| W.| 7 | 16 37 49. 11g |—0. 333 |+0. 518 |— 0.018 |— 1.222 |+-0.026 | 48.090 | 15 28 15.302 |—I 9 32.788 j+ 0.007 «w Coronz Borealis. 7 | 16 39 20.457 |—0. 318 |+0. 496 |+ 0.016 |— 1.167 |+0.030 | 19. 508 | 15 29 46. 732 32.776 |— 0.005 Serpentis. . . . 7 | 16 50 23.530 |—o. 286 |+0. 457 |+- 0.089 |— 1.079 |+0.053 | 22.764 | 15 40 49. 992 32.772 |— 0.009 y Serpentis... . 7| 17 © 39.203 |—o. 287 |+0. 467 |+- 0.088 |— 1.081 |+0.074 | 38.464] 15 51 5.664 32. 800. |+ 0.019 Groom. 2320. .| W.| 7 | 17 15 38.743 |--0.592 |+0.991 |— 0.617 |— 2.788 |+0. 106 | 35.843 | 16 6 3.054 |—1 9[32. 789] NORMAL EQUATIONS. Se Ss. Assuming a/ —-+0.468-+ da’ circle E. ( 0=-+ 0,051 + 2. 269 da’ — 1.034 dc+ 1.207 d¢ ) whence da’ = —o. 004 a// = +0. 3844+ da” “ W. | —- 0.013 + 0.811 da/7 + 0.612 dc ++ 0. 065 d¢ da’’ = — 0.017 ¢ =-+0.979+ dc « oR, — 0. 550 — 1.034 da’ + 0. 612 da’ + 13. 347 dc — 1. 033 df 6c =+0.042 AT =— 15 g™ 328.783 + dt + 0.026 + 1. 207 da’ + 0. 065 da’ — 1.033 dc + 8. 316 ot d¢ =+ 0.003 a/ == + 08.464 (circle east); a’ = + 08.367 (circle west); c= 1°.021 (+ with circle E.). Chronometer No. 1295, at 164 25™ chron. time, 15 9™ 328,781 + o*.o11, fast; losing 0*.123 per hour. IN MEXICO AND CENTRAL AND SOUTH AMERICA. 129 Transits of stars observed at the Public Square, Galveston, by Lieut. Commander C. H. Davis, with transit No. 1 (504, to determine the correction of sidereal chronometir Negus 1295. g $ Flexure Aberra- eeahae Sg Transit over | and in- . tion and Chronomete Date. Name of star. | ce {mean of threags.| equality Level. | Azimuth. ell Rate. | of corr. R.A. ea. u. 2 a of pivots. mation. fer o|Aa 1883. hom». Ss 5. Se ag ai 3 hem him. Ss. 5. May 1 |p Leonis.. . . .| E.] 7 | 11 36 10.599 |+-0. 271 |-L0. 140 |-++- 0.123 |-+ 1.035 |—0.096 | 12.072 | 10 26 41.183 |—1 9 30. 889 |-+ 0. 033 41 Leonis Minoris . 7 | 11 46 34.786 |-+-0. 308 |-++0. 133 |+ 0.038 |-+ 1.115 |—0.074 | 36.306 | 10 37 5.394 30. 912 |-++ 0.056 Z Leonis.... 7 | 11 52 38.090 |-++0. 274 |+-0. 105 |+ 0.115 |+ 1.039 |—0. 062 | 39.561 | 10 43 8.656 30. 905 |-+ 0.049 Groom., 1706 . 3 7 | 12 0 3.236 |-+-0. 921 |+0. 293 |— 1. 368 |+ 5.072 |—0.047 | 8.107 | 10 50 37.217 [30. 890] , 6 Leonis. . E. | 7 | 12 17 24.711 |+0. 301 |-+-0.054 |4 0.048 |+ 1.093 |—0.010 | 26.197 | 11 7 55.437 |—1 9 30.760 |-- 0.096 t Leonis.... W.) 7 | 12 31 29. 386 |—o. 255 |+0. 345 |+ 0. 112 |— 1.058 “10. 020 28.550 | 11 21 57.634 |—1 9 30.916 |+ 0,060 Aa Draconis... . 7 | 12 34 3.857 |—0. 627 |-Lo. 848 |— 0. 487 |— 3.085 |+0.025 | 0.531 | 11 24 29. 664 [30. 867] B Leonis..... 7 | 12 52 39.574 |—o. 284 |-Lo. 385 |+ 0.065 |— 1.094 |+0..064 | 38.710 | Il 43 7.924 30. 786 |— 0.070 8 Virginis 5 7 | 12 54 10. 220 |—o, 253 |+0. 342 |4 0.116 |— 1.057 |+0.068 | 9.436 | 11 44 38.559 30. 877 |+ 0.021 o Virginis W.| 7 | 13 8 49.060 |--0. 269 |+0. 365 |+ 0.089 |— 1.070 |4-0. 098 | 48.273 | 11 59 17.468 |—1 9 30.805 |— 0.051 NORMAL EQUATIONS. Ss. d. Assuming a@ =-+0.220-+ da’ circle E. O=— 0.121 + 1. 346 da’ — v.534 dc + 0.579 dt whence da’ = + 0. 144 a’? = +0, 382-4+da” “ W. + 0. 214 + 1. 338 da’ — 0. 342 dc + 1. 091 df da// = — 0. 126 ¢ =-+0.g01 + de oo Be — L. 640 — 0. 534 da’ — 0. 342 da’? +- 12. 234 de — 0.075 df 6c =+0. 137 AAT = —- 15 g™ 308.870 + d¢ -++ 0. 006 + 0. 579 da’ + 1.091 ba’/’ — 0.075 dc + 8. 287 dt 6¢ =-+ 0.007 a/ = — 08,364 (circle east); a// = + 08.256 (circle west); ¢.= 18.038 ( + with circle E.). Chronometer No. 1295, at 124 22™ chron. time, 14 9™ 308,856 + 08.015, fast; losing 08.123 per hour. May 1 | 20 Comz .| E. | 7 | 13 33 22.094 |+o. 301 |+0. 148 |+ 0.080 |-+ 1.077 |—o. 111 | 23.589 | 12 23 53.163 |-1 9 30.426 |— 0, 068 y Virginis (med.) . 7 | 13 45 15.513 |-+0. 245 |+0. 107 |+ 0.276 |+ 1.002 |—o. 086 | 17.057 | I2 35 46.679 30. 378 |— 0. 116 6 Virginis. ... 7113 59 14.421 |-++0. 257 |+0.097 |-+ 0. 236 |-+ 1.006 |—0.057 | 15.960 | 12 49 45. 306 30. 654 |+ 0. 160 44 Cephei,(H.)S.P.| . 7 | 14 IL 45.350 |—0. 469 |—0. 151 | 2.743 |— 5.465 |—0.030 | 41.978 | 1 2 11.382 [30.596]} .. 43 Come. .... E.| 7 | 14 15 56.413 |+-0. 322 |+-0. 098 |+4 0.009 |+ 1.140 |—0.021 | §7.961 | 13. 6 27.405 |—1 9 30.456 |— 0.038 ¢ Virginis W.| 7 | 14 38 18.119 |—0. 247 |+0. 253 |} 0.101 |— 1.038 |+0.025 | 17. 213 |-13 28 46.772 |—I 9 30.441 |— 0.053 rt -Bootis. . 7 | 14 81 16. 363 |—o. 292 |+-0. 335 |-+ 0.042 |— 1.092 |+v. 053 | 15.409 | 13 41 44. 862 30. 547 |4+ 0.053 11 Bootis . 7 | 15 § 26.407 |—o. 320 |4-0. 411 |. 0.006 |— 1.175 |-+0.083 | 25.412 | 13 55 54.863 30. 549 |-+ 0.055 a Draconis... .| . 7 | 15 10 49.279 |—0. 543 |-+0. 725 |— 0. 283 |— 2.450 | | 0.094 | 46.822 | 14 1 16. 388 [30.434]} . . a Bootis.....| W.| 7] 15 19 53-559 |—0.297 |+0. 421 |4+ 0.036 |— 1.103 |--0. 113 | 52.729 | 14 10 22. 226 rt 9 30.503 |4 0.009 NORMAL EQUATIONS. §: . Assuming a =-+0.446-+ da’ circle FE. ( o=—0. 151 + 2. 205 da’ — 0.735 de + 1.443 bt | a//=+0.201+4+ da “ W. -+- 0, 007 + vu. 887 da’” + 0, 062 de + 0. 480 d¢ ¢ =+0.972 4+ dc fo TE, — 0. 558 — 0. 735 da’ -- 0.062 da/’ + 12.557 dc — I. 114 d¢ AT = -— 18 g™ 308.492 + d¢ 0. 142 + 1. 443 da’ + 0. 480 da’? — 1.114 de + 8. 373 04 J a’ = + 08.549 (circle east); a’” = ++ 08.206 (circle west); ¢—= 15.020 (+ with circle E.). Ss, whence da’ = + 0. 103 Chronometer No. 1295, at 14> 26™ chron. time, 1" 9™ 305.494 = 0.021, fast; losing 0*.123 per hour. 11959 Dp L——17 \ da’! == + 0, 005 dc =+ 0.048 df =—0.029 130 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at the Public Square, Galveston, by Lieut. Commander C. H. Davis, with transit No. 1 504, to determine the correction of sidereal chronometer Negus 1295. | 4 | 5 Flexure | - Aberra- Seognds 3 a Transit over | and in- : tion and Chronometer Date. Name of star. 3 =. liveanof threads. equality Level. | Azimuth. colli- Rate. a me R.A. COR ecHBK vw. 3 3 of pivots. mation, arene se o OG 1883. A.m. Ss. °y te S Ss. S. 5. him 5. hem. 5. $: May 2| 2 Leonis. +] Ej} 7 | 11 52 35.621 |4-0.274 |-+0.175 |+ 0.151 |-+ 0.958 |—0. 152 | 37.027 | 10 43 8.644 |—1 9 28. 383 0. 024 o lLeonis. . . 7 | 12 24 35.563 |-+-0. 263 |+0. 143 |}+ 0.185 |4+ 0.947 |—0. 084 | 37.017 | 11 15 8.566 28. 451 0. 044 1 Leonis. 3 | 12 31 24.544 |+-0. 255 |+0. 133 j|+ 0. 208 |+ 0.942 |—0.071 | 26.011 | 11 21 57.625 28. 386 9. O21 v Leonis. . 7 | 12 40 26. 887 |+-0. 246 |4-0. 122 |4 0.235 |4+ 0.940 |—0, 052 | 28.378 | 11 30 59.974 28. 404. 0. 003 3 Draconis... . 7 | 12 45 25.143 |+-0. 580 |+0. 279 | 0. 766 |+ 2.447 |—0. 042 | 27.641 | II 35 59.230 [28.411] x Virginis . . E.| 7 | 13° 4 22.060 |+0+265 |+0.112 |+ 0.180 |+ 0.948 |—o. oo1 | 23.564 | 11 54 55.159 |—I 9 28.405 0. 002 o Virginis . -| W.) 7 | 13+ 8 46.599 |—o. 269 |+0. 368 |4- 0.170 |— 0. 989 |-L0. 008 | 45. 887 | 11 59 17.461 |—1 9 28.426 0. O19 n Virginis. . . 7 | 13 23 26.863 |—0. 247 |-+-0. 344 |+ 0.239 |— 0.976 |-++0, 039 | 26. 262 | 12 13 57.869 28. 393 0, O14 « Draconis... 7 | 13 38 4.207 |—0. 636 |+0. 904 |— 0.958 |— 2.897 |-+0.069 | 0. 689 | 12 28 32. 283 [28.406]} . . @ Virginis. . . 7 | 14 13 25.237 |—0. 235 |--o. 348 |+ 0.275 |— 0.980 |+0. 144 | 24.789 | 13 3 56.416 28. 373 0. 034 a Virginis. . . .| W.| 7 | 14 28 33.611 |—o. 221 |+-v. 333 |-++ 0.318 |— 0.993 |+0.175 | 33.223 | 13 19 4.788 |-1 9 28.445 0. 038 NORMAL EQUATIONS. be pee Be Assuming a’ = 0.424 + da’ circle E. 0 =— 0. 129 + 1.440 da’ + 0,824 dc-+ 1.4720.) whence da’ = -+ 0.053 a’ =+0.567 4+ da’? * W. +0. 211 +- 1. 880 da’/” — 0.894 de -+ 1.659 b¢ da/’ —= — 0.079 c¢ =+0. 891 + dec 1 EK. — 0.943 + 0. 824 da’ — 0. 894 da” + 12. 387 dc + 0. 783 d¢ dc =-+ 0.067 AT =— 1» g™ 288.405 + d¢ + 0.018 + 1.472 da’ + 1.659 da’’ 4+- 0.783 de + 9.171 dt df ==— 0.002 a/ = + 0.477 (circle east); @/” = + 08.488 (circle west); ¢ == 08.958 (+- with circle E.). Chronometer No. 1295, at 13> 5™ chron. time, 15 9™ 289.407 ++ 08.006, fast; losing 0%.123 per hour. Transits of stars observed at the Naval Observatory, Washington, by Lieut. Commander C. H. Davis, with transit No. 1502, to determine the correction of sidereat chronometer Negus 1254. eS § Flexure Aberra- Date. Name of star. 2 s Wisse ve ae Level. | Azimuth. a Rate. of eon R.A. enlarge v. 3 | of pivots. mation. Tenet: 5 | 2 1884. : him. 5. 5. S. Ss. S fs Ss. he tt. 5S. h. M9. 3 June 4/ 20 Can. Vemat. . .| W.| 3 | 12 41 15. 364 |--0.714 |+0. 265 |— 0.078 |+ 0. 202 |—0.079 | 14.960 | 13 12 22.321 |+-0 31 7.360 |+ o.051 Groom., 2001. . 7 | 12 52 8.129 |—1. 523 |-+u. 532 |— 2.808 |+ 0.520 |—0.067 | 4.783 | 13 23 12.219 [7-436]]. tT Bootis..... 7 | 13 10 39.573 |—0. 528 |+0.171 |+ 0.548 |-+ 0.160 |—0. 046 | 39. 878 | 13 41 47.259 7. 381 |-+ 0.030 11 Bootis.. . . . 7 | 13 24 49. 680 |—v, 598 |--u. 160 |-+ 0.315 |-+- 0.172 |—0. 031 | 49.698 | 13 55 57.133 7-435 |— 0.024 « Bootis . 7 | 13 39 16.971 |—0. 540 |4-0.126 |4+ 0.510 |} 0.162 |—o.o15 | 17.214 | 14 10 24.586 |+0 31 7.372 |+ 0.039 33 Bootis . .| E.} 7} 14 3 25.724 +. 648 |—v. 178 |— 0. 168 |— 0. 260 |-+0, 012 | 25.778 | 14 34 33-443 |40 31 7.665 |— 0.254 6 Ursze Minoris. . 7 | 14 20 0.043 |-+1.648 |-+0,018 |— 2.508 |— 0. 694 |-++-0. 030 | 58.537 | 14 51 5.743 [7. 206] ed wl wy Bootis . 7 | 14 28 22.971 |+v. 594 |+0. 002 |+ v. 255 |— 0. 207 |-+0. 039 | 23.654 | 14 59 30.974 7.320 |+ 0.091 6 Bootis . 7 | 14 39 44.251 |+0. 645 |—0. 139 |+ 0.123 |-- 0.221 |+0.051 | 44.710 | 15 10 52.077 7. 367 |4 0.044 v1 Bootis . ¢ | _Es 7 | 14 55 40.623 +0. 715 |—o0. 231 |— 0.061 |— vu. 245 |+0.069 | 40.870 | 15 26 48.255 |t0 31 7.385 |+ 0.026 NORMAL EQUATIONS. Assuming = @ ==+ eee + da’ circle W. O= — 0.057 + 0. 891 da’ + 0.202 bc + 0.581 d¢ ) whence da’ = + 0, 084 a//—+1.281+ da’? * E, + 0. 032 + 0, 728 da’’ — 0.997 6c —o. 161 O¢ 6a// = — 0. 143 ¢ =—0.097 + dc oF, + 0. 891 + 0. 202 da’ — 0. 997 da/’ + 14. 688 de + 0. 453 dt dc ==—0.071 AT = 0b 31™ 78.425 + de : + 0. 008 + 0. 581 da’ —0. 161 da’? + 0.453 dc + 8. 290 dt ét¢ ——0.006 a/ — + 18.465 (circle west); a/’ = + 18.138 (circle east); ¢ = 08.168 (— with circle E.). Chronometer No. 1254, at 13" 52™.9 chron, time, o 31™ 78,411 + 6,026, slow; losing 0*,066 per hour. IN MEXICO AND CENTRAL AND SOUTH AMERICA. 131 - Transtts of stars observed at the Naval Observatory, Washington, by Licut. Commander C. I/. Davis, with transit No. 1502, to determine the correction of sidereal chronometer Negus 1254. n oO 8 Flexure Aberra- ‘ Date. | Nameot stax [| = jy cimnstoves, | adit | roves, | asimth,| "0% 2" | Rate, oteor ra, | Chronometer |, 3 s ~ — Jof pivots. ; mation. BAnEM: Oz 1884. Be Wb: 8 iss Ss. S S. si S. hem. ye him. >. Se Juner5|7 Virginis. . . W.! 7 | 13 24 25.853 |\—0. 431 |—o0. 263 |+- 0.622 |+ 0.269 |—0. 050 | 26.000 | 13 55 47.049 |+0 31 21.049 |-++ 0.026 a Bootis..... 7 | 13 39 3.706 |-—0. 540 |—o. 342 |+ 0. 362 | 0. 286 |—0. 040 | 3.432 | 14 IO 24. 509 21.077 |— 0, 002 33 Bootis . edi 7 | 14 3 13.344 |-0. 648 |—0. §03 |— 0.154 |-+ 0. 380 |--0. 022 | 12.397 | 14 34 33-323 20. 926 |+ 0. 149 47 Cephei(H.) 5S. P. 7 | 14 19 17.590 |+1. 312 |-Lo. 895 J+ 4.795 |— 1.571 |—0. 010 | 32.981 | 14 50 44. 127 (21. 146] é p Bootis. . . .| W.} 7 | 14 28 10.190 |—o. 594 \—0. 404 |4+ 0. 233 |4 0. 303 |—0.004 | 9.724 | 14 59 30.908 |+0 31 21.184 |— 0. 109 y Urse Minoris . E.| 7 | 14 49 38.793 |+1. 246 |—1. 480 |— 1.149 |— 0.987 |+0. 012 | 36.435 | 15 20 57.544 |+0 31[21. 109] ¢ Coron. Bor. (seq.) 7115 3 42.374 |40.674 |—v. 729 |4+ 0.026 |— 0. 377 |4+0.022 | 41.990 | 15 35 3-020 21.030 |+ 0.045 B Serpentis . 7415 9 31.720 |+0.514 |—0. 574 |+ 0. 260 |— 0. 313 |4-0.027 | 31.634 | 15 40 52.719 21.085 |— 0.010 e Serpentis . 7 | 15 13 43.816 |--o. 447 |—0. 509 |-+ 0.358 |— 0. 302 |+0. 030 | 43.840 | 15 45 4.923 21.083 |— 0.008 e Coron.Bor.. .| E.| 7 | 1§ 21 28.879 |+0.592 |—o. 7or |-+ 0.145 |— 0.338 |+0. 050 | 28.627 | 15 52 49.790 |40 31 21.163 |— o. 088 | NORMAL EQUATIONS. Assuming a@/ =+ Ses + da’ circle W. Oo=+0. 493 + 2. 085 da’ + 0.723 dc + 1,355 6¢ | whence da’ = — 0. 316 a//—+ 0,462-+ da’ “ E, — 0, 264 -+- 1. 089 da’’ + 0, 289 dc + 0. 932 d¢ da’’ = +. 0.175 c¢ =—0,.480+ dc « EK, — 2.590 + 0. 723 da’+ 0. 289 da’’ +-14. 104 dc + 0. 751 dt dc =+0.195 AT =-+ oF 31™ 218.074 + dt -— 0,029 + 1.355 da’-++ 0. 932 da’’ + 0.751 dc + 8. 242 dt dt =+0.018 a’ = -+ 14.039 (circle west); a// = + 08.637 (circle east); ¢ = 08.285 (— with circle E.). Chronometer No. 1254, at 145 32™.9 chron. time, o! 31™ 218.075 + 08.024, slow; losing 08.044 per hour. June 16| 7 Bootis... ..| W.! 7 | 13 17 49.930 |--0. 535 |--0. 268 |+ 0. 480 |-+- 0. 281 |—0. 046 | 49.842 | 13 49 11.840 |+-0 31 22.048 |-+ 0.038 @ Bootis..... 7 | 13 33 47.020 |—o. 581 |—o. 302 |-+ 0. 339 |-+ 0.295 |—0. 035 46.736 | 14 5 8.730. 21.994 |+ 0.092 5 Urse Minoris. . 7 | 13 56 31.643 \—1.796 |—0. 968 |— 3.3901 |+ 1.116 |—0.019 | 26.585 | 14 27 48.537 [21.952]} .- Bootis.... .- 7 | 14 8 35.853 |—0.595 |—0. 321 |+ 0. 296 |4 0. 300 |—o. O12 | 35.521 | 14 39 57- 638 22.117 |— 0.031 B Bootis..... 7 | 14 26 15.509 |—0. 711 |—o. 383 |— 0.060 |-++ 0. 352 | 0.000 | 14.707 | 14 57 36. 872 |4+-0 31 22.165 |— 0.079 1 Urs Minoris(H.)| E. | 7 | 14 42 0.736 +1. 246 |—o. 984 |— 1.509 |— 0. 789 |-+-0. o10 58.710 | 15 13 20.772 +0 31[22.062]| . . vi Bootis. . .. . 7 | 14 55 26.584 |+-0.715 |—0. 740 |— 0.064 |— 0. 396 |-+0. 020 26.119 | 15 26 48.175 22.056 |-+ 0.030 v Bootis.... . 7 | 14 56 18.631 |+0. 716 |—0. 749 |— 0. 066 |— 0. 397 |+0.020 | 18.155 | 1§ 27 40. 220 22.065 |+ 0.021 @ Bootis..... 7 | 15 2 20.480 |+0.710 |—o, 822 |— 0.050 |— 0. 393 +0. 025 | 19.950 | J5 33 42.123 22.173 |— 0. 087 B Serpentis... .| E.| 7] 15 9 30.594 |+0. 514 |—0. 664 |-+ 0.482 |-- 0.310 |4+-0. 029 | 30.645 | 15 40 52.717 |+0 31 22.072 |-+ 0.014 NORMAL EQUATIONS. : ' Assuming a” =-+ ; 369 + da’ circle W. o = + 0. 028 + 0. 880 da’ + 0,192 dc + 0. 542 d¢ | whence da’ = — 0.036 ” a//=+1.177+ da’ “ E. + 0, 009 + 0. §82 da/” — 0. 623 dc — 0. 064 de ome = +0. 004 c¢ == —0, 300+ dc «Ey — 0. 272 + 0. 192 da’ — 0. 623 da/” + 15. 206 dc + 0. 655 Of dc =-+ 0.018 AT =- ob 31™ 228,084 + d¢ 4+ 0. 009 + 0. §42 da’ — 0. 064 da// + 0. 655 de + 8. 348 d¢ df = 0.000 a/ = + 14.333 (circle west); a/7 = + 1°.181 (circle east); ¢ == 08.282 (— with circle E.). Chronometer No. 1254, at 14% 2671.3 chron. time, oh 31™ 228.086 + o%.015, slow; losing 0%.040 per hour. 132 TELEGRAPHIC DETERMINATION OF LONGITUDES Traniits of stars observed at the Naval Observatory, Washington, by Lieut. Commander C. H. Davis, with transit No. 1502, to determine the correction of sidereal chronometer Negus 1254. g | 7 Flexure Aberra- Ss : a - f i : econds ape a Transit over | and in- ‘ tion and ie Chronometer Dae Rene ee é « ‘mean of threads.| equality Meeks | ese nasllt colli- male a ee Rode correction. 2 . of pivots. mation. ge | O14 1884. A. mm. S. o. % S re 5. & hm. 5. A. mt. 5. S. Junet7 a Bootis. . -| W.} 7 | 13 39 1.574 |—0. 540 |—o0. 058 |-++ 0. 380 |+ 0. 215 |—0.038 | 1.533 | 14 10 24.490 |+0 31 22.957 |4- 0.036 | 33 Bootis . aa 7 | 14 3 11.116 |—o. 648 |—0. 159 |— 0. 161 |+ 0. 285 |—0. 025 | 10, 408 | 14 34 33-295 22. 887 |+ 0. 106 47 Cephei(H.)S. P. 7 | 14 19 15.979 |+1. 312 |+0. 310 |4- 5.035 |— 1.221 |—0.017 | 21.398 | 14 50 44. 327 [22.929]| . - | 6 Bootis.... ./). 7 | 14 39 29. 301 |—0. 645 |—o. 115 |+ 0.118 |-+ 0. 243 |—0. 006 | 28.896 | 15 10 51.998 23. 102 |--- 0, 109 ‘ B Coronx Borealis.) W.| 7 | 14 51 42.470 »—0. 610 |—v. 044 |4+- 0. 204 + 0.232 | 0.000 | 42,252 | 15 23 5.278 |+0 31 23.026 |— 0.033 | ¢ Corone Borealis.| E.| 7 | 15 3 39.934 |+-0.674 |—0. 447 |-+ 0.044 |-- 0. 293 |4+-0.006 | 39.918 | 15 35 2.-999 |+0 31 23.081 |— 0.088 | « Serpentis. . . . 7 | 15 12 10.366 |-+-0. §32 |—o. 350 |4+ 0.397 |\— 0.247 |4-0.011 | 10.709 | 15 43 33.796 23.087 |— 0.094 | ¢ Urse Minoris. . 7 | 15 16 57.064 |4-z2.029 |~1. 332 |— 3.336 |— 1.140 |+0. 013 | 53.298 | 15 48 16. 289 [22.991]) . . « Cor. Bor.(med.).| . 7 | 15 38 59.654 |+0. 648 |—0. 414 |+ 0. 108 |— o. 283 |-+0. 019 | 59.732 | 16 10 22.623 22. 891 |+ 0. 102 y Herculis. -| E. | 7 | 15 45 27.667 |+-0. 538 |—o. 347 |-+ 0. 382 |— o. 248 |-0. 028 | 28.020 | 16 16 50.931 |+0 31 22.911 |-+ 0.082 NORMAL EQUATIONS. x” ‘ Ss. Assuming a/ =-+ 0.969 + da’ circle W. [ O=—0. 105 + 1.723 da’ + 1.230 dc + 0, 827 d¢ ) whence Ja’ = - 0, 122 a// =-+-1.023-+ da’? « E, — 0.071 + 1.042 da’/’ — 0, 283 dc + 0. 611 Of da// = + 0.059 ¢ =—0.144-+ dc ses UR + 0. 994 + 1. 230 da’ — 0. 283 da’/ + 15. 037 dc + 0. 518 dt dc =—0,074 AT =-+ 0? 31™ 238.009 + d¢ L + 0. 038 + 0. 827 da’ + 0. 611 Ja’? + 0.518 dc + 8. 153 Se df =—0.017 a/ = + 18.091 (circle west); a” = + 18.082 (circle east); ¢ = 08.218 (— with circle E.). Chronometer No. 1254, at 145 51™.7 chron. time, o8 31™ 228.993 + 08.022, slow; losing 08.031 per hour. Transits of stars observed at the Public Square, Galveston, by Lieut. John A. Norris, with transit No. 1504, to determine the correction of sidereal chronometer Negus 1295. 3 Flexure Aberra- = Transit over | and in- . tion and Seconds Chronometer Date. Name of star. 4 = [mean of threads.| equality Level. | Azimuth. collj- Rate. et ae R.A. otrechiait: u 3 Z of pivots. mation. Fane: O14 ‘ 1883. him. s. o a $i S. S. S. hem. 9. hem. 3. re Apr. 30 | 20 Come . E. | 7 | 13 33 24.539 |-+0. 301 |+0.066 |-++ 0.061 |4 1.040 |—0. 132 | 25.875 | 12 23 53.169 |—I 9 32.706 |— 0.038 y Virginis . 7 | 13 45 17.954 |+0. 245 |+0.067 |+ 0.211 [+ v. 967 |—o. 108 | 19. 336 | 12 35 46.680 32.656 |— 0. 088 8 Draconis... . 7 | 14 © 22.271 |+0.559 |-+0. 182 |— 0. 622 |+4 2.385 |—o. 084 | 24.691 | 12 50 51.996 [32-695]} . . 43 Come..... 7 | 14 15 58.720 |+0. 322 |+0.125 |+ 0.007 |+ 1.100 |—-0. 048 | 60. 226 | 13 6 27. 409 32. 817 |4. 0.073 a Virginis ...|E.| 7 | 14 28 36.020 |+0. 221 |+0.096 |+ 0.274 |+ 0.983 |—0.024 | 37.570 | 13 19 4.789 |—1 9 32.781 |4- 0.037 Groom. 2029. . % | 14 44 2.279 |—0. 669 |+0. 801 |— 0.648 |— 3.217 | 0.000 | 58.546 | 13 34 25.905 |—1 9[32. 641] i 11 Bootis . 7 | 15 5 28.669 |—o. 320 |+-0. 420 |+ 0,008 |— 1.135 |+0.048 | 27.690 | 13 55 54. 861 32. 829 |+ 0.085 « Virginis. .. . 7 | 15 16 15.690 |—0. 223 |-+o. 305 + 0.191 |— 1.018 |t0.072 | 15.017 | 14 6 42.428 32. 589 |— 0.155 4 Virginis. ... 7 | 15 22 23.396 |—o. 215 |+0. 301 |+ 0. 206 |—- 1.029 |+0. 084 | 22.743 | 14 12 49.959 32. 784 |+ 0.040 @ Virginis. . . .|W.| 7 | 15 31 46.869 |—o. 242 |+0. 350 |+ 0.154 |— 1.003 |+0. 096 | 46.224 | 14 22 13.438 |—1 9 32.786 |4 0.042 NORMAL EQUATIONS. Assuming @/ =-+ Saat + da’ circle E. o=— 0.040 + I. 316 da’ + 0.308 dc + 0. 897 d¢ ) whence da? = + eos a/? —+.0,340-+4 da “« W. + 0.055 — + 1.980 da’/ —- 0. 669 dc + 1. 485 df da// —= —0. O41 ¢ =+1.006+ de ce) ++ 0. 220 + 0. 308 da’ — 0. 669 da’’ 4 12. 392 dc + 0. 187 d¢ dc =—O0.021 AT =— 1" om 328.748 + Ae — 0.033 + 0, 897 da’ + 1.485 da’? + 0. 187 dc + 8. 460 d¢ dt =- 0,008 a/ = + 08.421 (circle east); a/” = + 08.299 (circle west); c= 08.985 (++ with circle E.). Chronometer No. 1295, at 144 40™ chron. time, 14 g™ 32°.744 + 08.020, fast; losing 0.120 per hour, IN MEXICO AND CENTRAL AND SOUTH AMERICA. 133 Transits of stars observed at the Public Square, Galveston, by Lieut. John A. Norris, with transit No. 1504, to determine the correction of sidereal chronometer Negus 1295. wi . oO 8 Flexure Aberra- Seeende sg Transit over | and in- : tion and i Chronometer Date. Name of star. s | % |mean of threads.| equality Level. | Azimuth. colli- Rate. - ae R.A, eden U. 2 3S of pivots. mation. rena: O14 1883. ae S. S. if $s, S. si him. Ss. hom. 8. S. Apr. 30 | 7 Bootis, pr E.| 7 | 15 44 47.387 |-++0. 289 |Lo. 220 |+ 0.093 |-+ 1.087 |—o. 108 | 48.968 | 14 35 16.421 |—1 9 32.547 |+ 0.045 e Bootis. .... 7) 15 49 26.187 |-+0. 319 |-+-0. 227 |+ 0.014 |-++ 1.173 0.096 | 27.824 | 14 39 55. 386 32. 438 |— 0.064 y Bootis. .... 7 | 16 8 59.561 |+0. 318 |+0. 160 |+ 0.015 |+ 1.171 |—o. 060 | 61.165 | 14 59 28. 622 32.543 |+ 0.041 48 Cephei, S. P ‘ 7 | 1615 6.379 |—o. 368 |-0. 159 |+ 1.809 |— 4.731 |—o.048 | 2.8821 15 5 30.390 [32. 492] tT! Serpentis . E.| 7 | 16 29 55.503 |+0. 286 |+0.074 |+ 0. 100 |4- 1.081 |—0. 012 | 57.032 | 15 20 24.564 |—I 9 32.468 |— 0.034 y Coron. Bor. . W. 7 | 16 47 25.924 |—0. 316 |+0. 465 |+ 0.010 |~ 1. 204 |-+0. 024 | 24.903 | 15 37 52.444 |—I 9 32.459 |— 0.043 12 H. Draconis . . 7 | 16 54 30.693 |0. 518 |-+0. 787 — 0. 251 |— 2. 367 |-+-0.036 | 28. 380 | 15 44 55.935 [32. 445] e Coron. Bor... 7 | 17 2 20.739 |—o. 318 |+-0. 500 |4 0.008 |— 1. 209 |40.048 | 19.768 | 15 52 47. 323 32.445 |— 0.057 o Coron. Bor “il 2 7 | 17 19 53.963 |—o. 340 |-+-0. 576 |— 0.021 |— 1. 300 |-10. 084 | 52.962 | 16 10 20. 338 32. 624 |4+ 0.122 é Ophiuchi. . . .| W.| 7 | 17 21 43.996 |—o. 236 |+0. 402 |+ 0.115 | 1.079 |4+0. 096 | 43.294 | 16 12 10. 804 |---1 9 32.490 |— 0.012 NORMAL EQUATIONS. Ss. ve Assuming «@’ —-+0.425-+ da’ circle E. 0 = — 0,004 + 1.877 da’ — 1.279dc-+ 0.942 0¢ | whence da’ —=—0o0. 010 a// =+0.1694 da’? W. — 0.024 + 0. 833 da’’ + 0. 378 dc + 0. 130 d¢ da’ = + 0. 037 e¢ z=+1.075+4 dc ee TKS + 0, 204 — 1. 279 da’ + 0. 378 da’’ +- 13.271 de — 1. 291 df dc =—0.017 AT =— 1» g™ 328.500 4+ dt — 0, 021 + 0. 942 da’ + 0.130 da/’ — 1.291 bc + 8.435 d¢ of = 0.000 : a’ = -+ 08,415 (circle east); a’ = + 08,206 (circle west); ¢ = 18.058 (+ with circle E.). Chronometer No. 1295, at 16" 36™ chron. time, 14 g™ 329,502 +- 08.015 fast, losing 08.120 per hour, May 1 |226 Cephei,S.P . .| E. 7 | If 39 46.200 |—0, 294 —0. 087 |-++ 1.821 |— 3.964 |—0. 096 | 43.580 | 10 30 13.102 |—1 9[30. 478] 42 Leonis Minoris . 7 | 11 48 52.664 |+0. 331 |+0.081 |— 0.019 |-+ 1.151 |—0. 084 | 54.124 | 10 39 23.641 ~ 30. 483 |— 0.035 X Leonis. . “9 | 12 8 30.241 |+0. 266 |+0. 032 |4 0.172 |-+ 0.994 |-0.048 | 31.657 | 10 59 1. 167 30. 490 |— 0.028 p Leonis.... .] . 7 | 12 10 27.633 |+0. 253 |+-0.027 |+ 0.210 |+ 0.985 |-0.036 | 29.072 |] 11 0 58.460 30. 612 |+ 0.094 o Leonis.....|E.| 7 | 12 24 37.623 |+0. 263 |+0.006 |+ 0.182 |4+ 0.991 |—o. 012 | 39.053 | 11 15 8.577 |—1 9 30.476 |— 0.042 « Leonis..... 7 | 12 27 23.429 |—0. 274 |+0. 293 |4+ 0.010 |— 1.039 | 0.000 | 22.419 | 11 17 51.830 |—1I 9 30. 589 |-++ 0.071 v Leonis..... 7 | 12 40 31.387 |—-0. 246 |+v. 278 |-+ 0.016 |— 1.020 |+-0. 024 | 30. 439 | I1 30 §9. 983 30. 456 |— 0.062 y Cephei,S.P. . 7 | 12 43 §8.543 |+0. 352 |-—0. 403 |4- 0.136 |+ 4.527 |4+0.024 | 63.179 | 23 34 32. 644 {30.535]| - - x Virginis. . . .] . 7113 4 26.603 |—o. 264 |+0. 328 |-4+ 0.012 |— 1.028 |4-0.072 | 25.723 | 11 54 55.166 30. 557 |+ 0.039 n Virginis. . . .| W.| 7 | 13 23 29.176 |—o. 247 |. 328 |4 0.016 |-- 1.020 |+0. 108 | 28. 361 | 12 13 57.876 |—1 9 30.485 j— 0 037 NORMAL EQUATIONS. $. S. Assuming af —-+0.459 + da’ circle E. ( o= —0,009 + 2. 260 Ja’ — 0,670d¢+4+ 1.6196, ) whence da’ = +- 0.009 gil = --o. o11 + da’ «© W. | — 0, 040 + 2. 485 0a’’ + oO. 148 Oc + 2,090 J¢ da// = + vu. O21 ¢ =-+0.997 + de © OE, — 0.059 — 0, 670 da’ + 0, 148 da/’ + 12. 267 bc 4+ 0. 120 dy dc =-+0.005 AT =—t1! 9m 308.512-4 d¢ —o,o11 + 1.619 da’ + 2.090 da’’ + 0, 120dc + 8, 214 dt J dt —=— 0.006 a’ = + 0.468 (circle east); a’ = + 08.032 (circle west); ¢ = 18,002 (+ with circle E.). Chronometer No, 1295, at 12" 31™ chron, time, 14 9™ 30%.518 ++ o%.014, fast; losing 08.120 per hour. 134 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at the Public Square, Galveston, by Lieut. John A. Norris, with transit No. 1504, to determine the correction of sidereal chronometer Negus 1295. if é ; Flexure oe Seconds Date. Name of star. 2 : Rene eee ee Level. | Azimuth. eo Rate. 2 corr. R. A. ee v Sig of pivots. mation. ae OA 1883. Ah. ms. S. S. Ss. Ss. f ve he Mm. >». h. m 5. Ss. May 1 | 24 Come (seq.) . E. | 7 | 13 38 46.961 |-+0. 295 |+0. 106 |+ 0.067 |4+ 1.109 |—o. 132 | 48.406 | 12 29 18.242 |—I 9 30.164 |— 0.014 31 Coron. Bor. . 7 | 13 55 31.221 |+0. 321 |-+0. 091 |+ 0.008 |+ 1.190 |—o. 096 | 32.735 | 12 46 2.612 30. 123 |— 0.055 e Virginis. ... 7\ 14 § 52.617 |+0. 275 |+0.064 |4- 0. 110 |+ 1.071 |—o. 072 54. 065 12 56 23.878 30. 187 |+ 0, 009 a Virginis. .. . 7\ 14 28 33.476 |+0. 221 |+0.026 |+ 0.231 | 1.067 |—0. 024 | 34.997 | 13 19 4.789 30. 208 |+ 0,030 Groom., 2001. .| E. | 7 | 14 32 39. 364 |+0. 700 |+-0. 067 |— 0.836 |+ 3.588 |—o. 024 | 42.859 | 13 23 12.630 |—1 9[30. 229] Groom., 2029. . 71 14 43 59.864 |—o. 669 |-+0. 605 |— 0. 340 |— 3.481 | 0.000 | 55.979 | 13 34 25.890 |—1 9[30. 089] as yn Bootis.... . 7 | 14 58 40. 841 |—v. 295 |+-0. 331 |+ 0.030 |— 1.148 |+0.036 | 39.795 | 13 49° 9.564 130. 231 |-+ 0.053 d Bootis . 7 | 15 14 37.763 |—-0. 313 |+0. 426 |+ o.o11 |— 1.203 |+0.060 | 36.744] 14 5 6.515 30. 229 |+ 0.051 « Virginis. ... 7 | 15 16 13. 396 |—0. 223 |+0. 309 |+ 0.100 |— 1.101 |40.072 | 12.553 | 14 6 42.436 30.117 |— 0.061 a4 Virginis. 2. .| W.| 7 | 15 22 20.957 |—o. 215 |--o. 311 |4+- 0.108 |— 1.113 |-+0. 084 | 20. 132 | 14 12 49.968 |—1 9 30.164 |— 0.014 NORMAL EQUATIONS. Assuming af =-+ = 328 + da’ circle E. [ o=— 0.033 + 1. 433 da’ — 0,065 dc + 0, 802 d¢ } whence da? = + ‘ 026 a// —=+0,156-+ da’? « W. | + 0. O11 +.1.755 da’ — 0.402 dc + 1. 203 dt da// = + 0. Oo1 ¢ =+1.043+0¢ “ E, — 0, 296 — 0. 065 da’ — 0. 402 da// + 12.571 dc — 0. 009 dt dc =-+0.024 AT =— 15 g™ 308.174 + dt. [ + 0.001 + 0. 802 da’ + 1. 203 da’’ — 0.009 dc + 8, 334 dt df =-—0.002 a’ = + 08.354 (circle east); a’ = + 0%.157 (circle west); ¢= 1°.067 (+ with circle E.). Chronometer No. 1295, at 145 38™ chron. time, 14 9™ 308.178 + 08.010, fast; losing 0.120 per hour. May 2 | 42 Leonis Minois .| E. | 7 | 11 48 50.264 |+0. 331 |+o. ror |— 0.012 |4 1.088 /—o0. 180 | 51.592 | 10 39 23.625 |—-1I 9 27.967 |— 0. 046 a Ursze Majoris. . 7 | 12 § 58.321 |+0.§12 |+0. 165 |— 0. 338 |4+ 2.006 |—o. 144 | 60.522 | 10 56 32. 469 [28.053]| .. « Leonis. 7 | 12 27 18.579 |to. 274 |+0. 095 |4+ 0.091 |+ 0.948 |—0. 096 | 19.981 | 11 17 51.816 28.075 |+ 0.062 B Leonis. 3 Les 7 | 12 52 34.471 |v. 284 |+u. 106 |4- 0.072 |+ 0.963 |—0. 048 | 35.848 | 11 43° 7.915 27.933 |— 0.080 p Virgins... .! E.| 7 | 12 54 5.237 |+0. 253 |+0.095 |+ 0.130 |+ 0.931 —0.048 | 6.598 | 11 44 38.550 |—1 9 28.048 |-++ 0.035 4 Draconis (H.) 7 | 13 16 19.571 |—0. 913 |-+2.248 |— 0.715 |— 4.750 | 0.000 | 14.441 | 12 6 46.552 |—1 9[27.889]) . - | y Virginis. . 7 | 13 45 15.317 |—0. 245 |+0. 337 |+ 0.097 |— 0.966 |+0. 060 | 14.600 | 12 35 46.677 27.923 |— 0.090 e Virginis. ... 7 | 14 5 52.639 |—o. 275 |-L0. 382 |+ 0.060 |— 0.986 |+0. 096 | 51.916 ] 12 56 23.876 28. 040 |+ 0.027 43 Come... .. 7 | 14 15 56.354 |—0..322 |+0.450 ;+ 0.003 |— 1.099 |0. 120 | 55.506 | 13 6 27. 401 28. 105 |+ 0. 092 ¢ Virgins. . .|W.| 7 | 14 38 15.403 |—0. 247 |-+0. 347 |+ 0.094 |— 0. 966 |-+0.156 | 14.787 | 13 28 46.772 |—1 9 28.015 + 0.002 NORMAL EQUATIONS. Assuming @ =-+ " 315 + da’ circle E. o=-+0.019 + 0. 816 da’ + 0.088 dc + 0.563 d¢ | whence da? = — e 028 a//—+0.214+ Ja’ « W. + 0. 027 + 1.686 da’? + 0.133 de + 1.020 dt L da// —= — 0. 021 ¢ =+0.932+6¢ “ E. — 0, 200 + 0. 088 da’ + 0. 133 da’’ + 12. 400 de + 0. 438 d¢ 6c =+0.016 AT =— 1" g™ 288.020 + de. L — 0. 024 + 0. §63 da’ + 1.020 da’’ + 0. 438 dc + 8. 434 dt | dt =-+ 0.007 a’ = + 08.287 (circle east); a7 = + 0°.193 (circle west) ; ¢== 08.948 (++ with circle E.). Chronometer No. 1295, at 134 21™ chron. time, 14 9™ 28.013 + 08.016, fast; losing 0%.120 per hour. IN MEXICO AND CENTRAL AND SOUTH AMERICA. 135 Transits of stars observed at the Naval Observatory, Washington, by Lieut. John A. Norris, with transit No. 1502, to determine the correction of sidereal chronometer Negus 1254. 3 $ Flexure Aberra- Gacanae s Transit over | and in- iM tion and Chronometer Date. Name of star. 3 | & |mean of threads.| equality Level. | Azimuth. colli- Rate. corr, R.A. Correction: uw 2 é of pivots. mation. Fansit: 5} 24 1884. hem. 5. S. vy Ss. Si o Ss. him. >». hem. Ss. Ss June 4} a Virginis . . .|W.| 7 | 12 47 59. 123-|-0. 356 |-+0. 121 | 1.027 |+ 0,142 |—0.057 | 60,000 | 13 19 7. 521 |-+o 31 7.521 |4+- 0.118 B. A. C. 4536 . 7 | 12 §8 31.629 |—o. 681 |--o. 220 |+ 0.032 |-+ 0.177 |—0. 046 | 31. 331 | 13 29 38. 993 7.662 |— 0,023 Groom. 2029 . . 7 | 13° 3 21.036 |—1. 448 |+-0. 457 |-— 2.317 |+ 0.449 |—0. 042 | 18. 135 | 13 34 25. 606 [7-471] 7 Bootis..... 7 | 13 18 4.096 |—0. 535 |+0.156 |-+ 0.478 |+ 0.148 |—0.026 | 4.317 | 13 49 II. 993 7.676 |— 0.037 @ Bootis..... 7 | 13 34 1.103 |—0. 597 |--0. 154 |+ 0.337 |+ 0.155 |—0.010 | 1.142] 14 5 8.843 |+0 31 7.701 |— 0.062 p Bootis.....| E.| 7 | 13 55 43.997 |+-0. 620 |-o. 031 |-+ 0.179 |— 0. 200 |-|-0.012 | 44.577 | 14 26 52.221 |+0 31 7.644 |-— 0.005 e Bootis.. .. 7 | 14 8 49. 406 |+-0. 594 |-0. 065 j-+ 0. 244']— 0.194 |+0.026 | 50.011 | 14 39 57.711 7.700 j— 0, 061 B Bootis..... 7 | 14 26 28.960 |+0. 71r |—o. 137 |— 0.050 |— 0. 227 |-+0. 045 | 29. 302 | 14 57 36.982 7.680 |— 0.041 3 Serpentis 7 | 14 38 19.826 |+0. 450 |—o. -11 |+ 0.611 |— 0.173 |-+0.056 | 20.659 | 15 9 28.184 7.525 |+ 0.114 y? Ursz Minoris. .| E. 7 | 14 49 51.929 |+1.474 |—0. 444 |— 1.990 |— 0. 564 |+-0. 069 | 50.474 | 15 20 57.927 |+o 31 [7. 453] NORMAL EQUATIONS. a. a. Assuming @/ —=-+1.250+ da’ circle W. { o=—o. 095 + 1. 333 da’ — 0.489 dc + 1.102 d¢ | whence Ja’ — + 0.078 a/=+1.1764+ da’ “« EF, + 0.070 + 0.830 da’/’ + 0. 124 dc + 0. 645 dt da// = — 0,073 ¢ =—0.146+4 dc “ E. | ++ 0. 176 — 0. 489 Sa’ + 0. 124 da// + 13. 622 dc + 0. 052 d¢ | dc =—0.010 AT =-+ 0° 31™ 78,644 4+ dt l ++ 0, 060 + 1. 102 da’ + 0. 645 da’’ + 0.052 de+ 8.314 0 J df =—0.012 a’ = + 18.328 (circle west); a’ = + 18.103 (circle east); c= 0%.1§6 (— with circle E.). Chronometer No. 1254, at 13 43™.5 chron. time, o4 31™ 78.639 + 08.018, slow; losing 0°.062 per hour. June15|@ Bootis.. . . .|W.) 7 | 13 33 47.874 |—0. 580 |--0. 425 |+ 0.291 |+ 0.316 |—0. 042 | 47.434 | 14 5 8.740 |+0 31 21. 306 |— 0.002 5 Ursz Minoris. . 7 | 13 56 32.000 |—1.795 |—1.128 |— 2.917 |+ 1.196 |--0.028 | 27.328 | 14 27 48. 604 [21.276]} .. é Bootis 7 | 14 8 36.843 |—0. 594 |—0. 367 |-+ 0. 253 |-+ 0. 321 |—0. 020 | 36.436 | 14 39 57.647 21.211 |-+ 0.093 B Bootis. . . 7 | 14 26 16.486 |—o. 711 |—o. 482 |— 0,052 |+ 0.377 |—0. 008 | 15.610 | 14 57 36. 883 21. 273 |+ 0.031 6 Bootis.....}|W.| 7] 14 39 31.281 |—0. 644 |—0. 499 |+ 0.123 |+ 0.343 | 0.000 | 30.604 | 15 I0 52.014 |+-0 31 21.410 |— 0. 106 vt Bootis.. . . .| E.| 7 | 14 55 27.360 |+0.715 |—o. 821 |— 0.039 |- 0.422 |+0.o11 | 26.804 | 15 26 48.183 |-+0 31 21.379 |— 0.075 v2 Bootis . 7 | 14 56 19.454 |+-0. 716 |—o. 822 |— 0.040 |— 0. 422 |++0. 011 | 18.897 | 15 27 40. 233 21. 336 |— 0.032 « Serpentis . 7 | 15 12 12.727 |+0. 532 |—0. 639 |-++ 0. 262 |— 0. 334 |+0. 021 | 12.569 | 15 43 33.801 21. 232 |+ 0.072 y Serpentis . 7 | 15 19 47. 280 |+0. 516 |—o. 635 |-+ 0. 288 |-— 0. 330 |+-0. 026 | 47. 145 15 51 8.434 21. 289 |+ 0.015 Groom. 2320. .| E. | 7 | 15 34 43-943 |+1.260 |—1. 611 |— 0.935 ]— 0. 851 |4-0.036 | 41.842 | 16 6 3.030 |+o 31[21. 188] NORMAL EQUATIONS. Ss. J. Assuming a’ =-+.1.173-- da’ circle W. [ o=-+o0.011 4+ 0. 825 da’ + 0.552 dc + 0. 262 dt | whence Ja’ = — 0.026 al’ —=+0.749 + 60/7 “ E, -++ 0. 029 -+ 0. 722 da’/ — 0. 195 de + 0. 342 0 da’// = — 0.035 ¢ w—0.320+d0¢ “ E — 0, 283 + 0. 552 da’ — 0. 195 da’’ + 15. 091 de + 0. 192 dt | dc =-+0.019 AT =-+ 04 31™ 21%.300 + df -+ 0, 012 + 0, 262 da’ + 0. 342 da// + 0. 192 de + 8. 352 0¢ J df = 0.000 a’ = + 18,147 (circle west); @’’ = -+ 08.714 (circle east); ¢ = 08.301 (— with circle E.).: Chronometer No. 1254, at 144 13™ chron. time, ob 31™ 218.304 ++ 08.015, slow; losing 08.039 per hour. 136 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at the Naval Observatory, Washington, by Lieut. John A. Norris, with transit No. 1502, to determine the correction of sidereal chronometer Negus 1254. g S Flexure Aberra- Seconels a Transit over | and in- . tion and Chronometer Date. Name of star. é S mean of threads,| equality Level. | Azimuth. coll; Rate. e oT R.A. eareeclion: u Sis of pivots. mation. tape 5|4 1884. Bi tbe Be = je cs eS a e A. he de a Se June 16} 7 Bootis . W.| 7 | 13 10 25.057 |—o. 529 |—o. 236 |4+ 0.451 |-+ 0. 232 0.043 | 24.932 | 13 41 47.157 |+0 31 22.225 |— 0.018 Tt Virginis 7 | 13 24 24.537 |—0. 431 |—o. 180 |+ 0.724 |+ 0.221 |—0.034 | 24.837 | 13 55 47-042 22, 205 |-+ 0.002 a Bootis.. . 7 | 13 39 2.404 |—0. 541 |—0. 221 |+4 0.420 |+ 0.235 |—0.024 | 2.273 | 14 10 24.499 22. 226 |j— 0.019 33 Bootis. . ... 7 | 14 3 12.116 |—0.755 |—o. 351 |— 0.178 |+ 0.312 |—0. 009 | 11.135 | 14 34 33. 309 22.174 |+ 0.033 47 Cephei (H.)S.P.| W.| 7-| 14 19 15.579 |+-1. 312 |-+0. 763 |+ 5.564 |— 1.154 |+0.002 | 22.066 | 14 50 44.226 |+0 31[22. 160] 3 Serpentis... .| E.| 7 | 14 38 5.509 |40. 450 |—o. 362 | 0.561 |— 0.254 |+0.014 | 5.918 | 15 9 28.164 |+0 31 22.246 |— 0.039 y? Urs Minoris. . 7 | 14 49 37.743 |+1.474 |—I. 326 |— 1.826 |\— 0, 830 |+0.021 | 35.256 | 15 20 57.500 [22. 244] a Coronz Borealis 7 | 14 58 26.926 |+0. 591 |—0. 572 |-++ 0.232 |— 0. 284 |+0.027 | 26.920 | 15 29 49. 160 22. 240 |— 0. 033 y Coron Borealis 7 | 15 6 32.741 |+0. 588 |—o0. 607 |4 0. 240 |— 0. 283 |+0.032 | 32.711 | 15 37 54. 861 22.150 j++ 0.057 « Serpentis... .| E.| 7 | 15 12 11.507 |+0. 532 |-o 573 [+ 0.371 |— 0. 267 |+0.036 | 11.606 | 15 43 33-799 |+0 31 22.193 |+ 0.014 NORMAL EQUATIONS. de Ss. Assuming a’ =-+ 1.195 + da’ circle W. | 0 = — 0.026 + 2.176 da’ + 0.579 dc + 1.506 dt | whence da’ =-+ 0.011 a//=+1.003+4+ da “ E, —0.O11 + 0. 996 da’? + 0.654 dc -+ 1. 140 of | da// = + 0. 009 ¢ =—0. 244+ de te BS | — 0.107 + 0.579 da’ + 0. 654 da’’ + 13. 301 dc + 0. 597 Of [ dc =-+ 0.007 AY =+ 0! 31™ 228.210 4 d¢ L —v. O11 + 1.506 da’ + 1.140 da’’ + 0.597 dc + 8. 209 d¢ J é¢ =—0.002 a’ = + 18.206 (circle west); a/” = + 18.012 (circle east) ; ¢ = 0%.237 (— with circle E.). Chronometer No. 1254, at 14" 16™.5 chron. time, ob 31™ 225.207 + 08.008, slow; losing 08.039 per hour. June 17] 5 Urs Minoris. .| W.| 7 | 13 56 29.764 |—1.795 |—0. 220 |— 3.410 |+ 1.016 |—o. 042 | 25. 313 | 14 27 48.469 |+0 31[23.156]] . e Bootis. 7 | 14 8 34.600 |—o. 594 |—0. 076 |+ 0.296 |+ 0. 273 |—v. 034 | 34.465 | 14 39 57.629 23. 164 |+ 0.018 B Bootis.. . 7 | 14 26 14.270 |—0. 711 |—0. 107 |— 0.060 |+- 0. 320 |—0. 022 | 13.690 | 14 57 36. 861 23.171 |+ 0.011 #! Bootis. .. 2.) . 7 | 14 48 46.254 |—o. 681 |—0. 145 |-+ 0.032 |4 0. 306 |—-0.007 | 45.759 | 15 20 8.899 23. 140 |-+ 0.042 vl Bootis . W.| 7 | 14:55 25.546 |—0. 715 |—0. 170 |— 0.072 |+ 0.322 |—0. 002 | 24.909 | 15 26 48.166 |+0 31 23.257 |— 0.075 B Serpentis... .| E.| 7] 15 9 29.193 |+0.514 |—0. 292 |4+ 0.431 |— 0. 285 |+0.007 | 29. 568 | 15 40 52.714 |+0 31 23.146 |4 0.036 e Serpentis. . 7 | 15 13 41.181 |-+-0. 447 |—o. 261 |4+ 0.595 |— 0.275 |-}0.010 | 41.697 | 15 45 4.921 23.224 |— 0.042 e Coronz Borealis 7 | 15 21 26. 380 |+0. 592 |—0. 361 |+ 0.240 |— 0. 308 |+0.015 | 26.558 | 15 52 49. 783 23.225 |I— 0.043 Groom., 2320. : 7 | 15 34 41.471 |+1. 260 |—o. 824 |— 1.385 |— 0.735 |+0.024 | 39.811 | 16 6 2.984 [23-173]} ..- w Herculis. . . E. | 7 | 15 48 43.043 |+0.505 |-—o. 356 |4 0.454 i 0. 283 |+0. 033 | 43.396 | 16 20 6.529 | +0 31 23.133 |+ 0.049 NORMAL EQUATIONS. oe Se Assuming a’ = + 1.331 + da’ circle W. { o=-+ 0.008 + 0. 753 da’ + 1.004 dc — 0. 129 6¢ whence Ja’ — + 0.010 a//=+1.090+ da’ * E. + 0. 043 + 1.136 da’ + 0.828 dc + 1. 306 dt da’? — — 0. 032 ¢ =—0. 2444 dc OG: + 0. 227 ++ 1.004 da’ + 0. 828 da’’ + 14. 466 dc — 0. 647 d¢ dc =—0.014 LAT = + 0b 31™ 238.178 + ot + 0. 001 — 0. 129 da’ + 1. 306 da’/ — 0. 647 bc 4- 8. 352 6¢ 6¢ =+ 0,004 a/ = + 1.341 (circle west); 2/7 = - 1%.058 (circle east); c= 08.258 (— with circle E.). Chronometer No. 1254, at 144 59™.0 chron. time, ob 31™ 238.182 - 0%.011, slow; losing o%.o40 per hour. IN MEXICO AND CENTRAL AND SOUTH AMERICA. 137 Transits of stars observed at the Naval Observatory, Washington, by Lieut. John A. Norris, with transit No. 1502, to determine the correction of sidereal chronometer Negus 1254. g S " Flexure Aberra- Sxeohas . ransit over | and in- F tion and me Chronometer Date. Name of star. | & |mean of threads.) equality Level. | Azimuth. | “oon. Rate, . corr. R.A correction: Dv Big of pivots.| ~ mation. ransit. O14 1884. hem. ys. Ss. ss s Ss. S. o hem. 5. hem. 9». Se June 20] 7 Bootis. . . . . W.| 7 | 13 17 45.210 |—o. 535 |-+0. 008 |+ 0.492 |+ 0.120 |—0. 064 | 45.231 | 13 49 11.848 |--o 31 26.617 |4+ 0.054 ‘ d Bootis 7 | 13 33 42.164 |—o. 580 |--0.051 |+ 0.347 |+ 0. 126 |—0. 048 | 42,060 | 14 § 8.692 26. 632 |+ 0.039 y Bootis. .... 7 | 13 56 0.270 |—o. 690 |-++0. 109 |+ 0.001 |+ 0.146 |—0. 026 | 59.810 | 14 27 26. 485 26.675 |— 0. 004 e Bootis. . , 7 | 14 8 30.894 |—o. 594 |-0. 112 |4 0. 302 -- 0, 129 |—0. 013 | 30.830 | 14 39 57.598 26. 768 |— 0.097 B Urse Minoris. .| W.| 7 | 14 19 42.150 |—1. 648 |-+-0. 352 |— 3.012 |+ 0.430 |-o. oo1 | 38.271 | 14 51 4.914 |+0 31[26. 643] w Bootis. . 2. . E. | 7 | 14 48 41.750 |-Lo. 681 |—o0. 078 |-+ 0.021 |— 0.185 |-Lo. 028 | 42.217 | 15 20 8.875 |+-0 31 26.654 |+ 0.017 B Coronz Borealis. 7 | 14 51 38.071 |+0. 610 |—o. 087 |-+ 0. 163 |— 0. 168 |+0.031 | 38.620 | 15 23 5.254 26. 634 |+ 0.037 @ Bootis. 7115 2 15.064 |+0. 710 |—o. 174 |— 0.036 |— 0.193 |+-0. 042 | 15.413 | 15 33 42.082 26. 669 |-+ 0.002 B Serpentis... .| . 7115 9 25.387 |+0.514 |—o. 161 |+ 0.354 |— 0.152 |+0.049 | 25.991 | 15 40 52. 708 26.717 |— 0.046 ¢ Urse Minoris. .| E.| 7 | 15 16 51.514 |-+2.028 |—o0. 814 |— 2.682 |— 0.711 |+0.057 | 49. 392 | 15 48 16.107 |-+-0 31[26. 715] = NORMAL EQUATIONS. $s S. Assuming a@/ —-+ 1. 322+ da’ circle W. 0 = — uv. 037 + 0. 880 da’ + 0.176 6c + 0.547 df ) whence da’ = -+ 0.045 a/? —+.0.878+ da’? “ E, + 0. 004 ++ 0. 974 da’? — 0. 602 dc 4+ 0. 326 dt da// = — 0. 008 ¢ ==— 0,121 +4 de «OW. + 0.119 +0. 176 da’ — 0, 602 da’’ + 14. 794 dc + 0. 097 df dc =—0.009 AT =-+ 0b 31™ 268.674 + dt + 0.007 + 0. 547 da’ + 0. 326 da’” — 0.097 dc + 8. 212 dt | df = — 0.003 a’ = + 15.367 (circle west); 2/7 = + 0°.870 (circle east); ¢ = 0%.130 (— with circle E.). Chronometer No. 1254, at 148 21™.0 chron. time, o® 31™ 268.671 + 0*.012, slow; losing 08.061 per hour. June 23 | 33 Bootis. . . . - W.| 7/14 3. 2.179 |—0.755 | 0.000 |— 0. 208 |4- 0.405 }—0.068 | 1.553 | 14 34 33. 196 |+-0 31 31.643 |— 0.013 8 Urse Minoris. . 7 | 14 19 36.650 |—1. 648 |-+0. 199 |— 3.095 |+ 1.083 |—0. 049 | 33-140 | 14 51 4.734 [31.594]} .. 6 Bootis. . . 7 | 14 39 20.447 |—0. 644 |0. 106 |-+ 0.150 |-+ 0. 345 |—0.027 | 20.377 | I5 IO 51.944 31.567 |+ 0.063 vi Bootis, .... . 7 | 14 55 16.853 |-0.715 |+0.011 |— 0.076 |+ 0. 382 |—0. 009 | 16. 446 | 15 26 48. 109 31. 663 |\— 0. 033 vt Bootis. . . . . W.| 7 | 14 56 8.909 |—0. 716 |+0. 011 |— 0.079 |+ 0.382 |—0.008 | 8.499 | 15 27 40.154 |-+0 31 31.655 |— 0.025 B Serpentis... .| E.| 7] 15 9 20.509 |+0.514 |—0. 200 |-++ 0.451 |— 0. 331 |40.007 | 20.950 | 15 40 52.699 |+-0 31 31.749 |— 0. 119 Groom. 2320. . 7 | 15 34 32.486 |+1. 260 |—o. 290 |— 1.450 |— 0. 856 |-++0. 035 | 31.185 | 16 6 2.825 [31.640]} . y Herculis. .. . 7 | 15 45 18. 799 |--0. 538 |—0. 089 |+ 0. 391 |— 0. 338 |+0.047 | 19. 348 | 16 16 50.918 31.570 |+ 0,060 B Herculis. ...|] . 7 | 15 53 44.674 |+0. 554 |—0. 064 |+ 0. 352 |— 0. 344 |-+0. 056 45.228 | 16 25 16.774 31.546 |-+ 0. 084 ¢ Herculis. . . .| E.| 7 | 16 5 25.463 |40. 628 |—o, 028 |-++ 0. 161 |— 0.375 |-+0.069 | 25.918 | 16 36 57.562 j+0 31 31.644 |— 0.014 S. Assuming a7 =-+ 1.394-+ da’ circle a//==+1.163-+4+ da” * —o. 295 + dc 66 AT =-+ oh 31™ 318.622 + df a/ = + 18,405 (circle west); a// == -+- 18.108 (circle east) ; ¢ == 0%.303 (— with circle E.). Chronometer No. 1254, at 15" 3™.4 chron. time, oF 31™ 318.630 + 08.016, slow; losing 08.067 per hour. 11959 p L——18 c = W. a L NORMAL EQUATIONS. o=-+0,007 + 0. 675 da’ + 0. 043 -+ 1.315 dc —o. 440 d¢ + 0. 831 Ja// + 0. 453 de + 0. 904 d¢ + 0.145 + 1.315 da’ + 0. 453 Ja/’ 4 15. 352 dc — 0. 762 d¢ — 0.012 — 0. 440 da’ + 0. 904 da/’ — 0, 762 de + 8. 375 o¢ os whence da’ =-+ 0,011 da// = — 0.055 dc =—0,008 of ==-+ 0.007 138 TELEGRAPHIC DETERMINATION OF LONGITUDES Transits of stars observed at the Naval Observatory, Washington, by Lieut, John A. Norris, with transit No. 1502, to determine the correction of sidereal chronometer Negus 1254. : i sess ess $ Flexure Aberra- Seconds a Transit over | and in- skewed tion and ° ; Chronometer Date: Namie: of Sis. 3 5 mean of threads.) equality Meeel: SAS oti, Rate: e ee ee correction. me 2 | 5 of pivots. mation. ranett: O12 1884. he mes. y S. bes S. S. S. he mt. 8. hem. 5. s. June 28 | 33 Bootis. . . . .| W.| 7] 14 2 55.694 |—o 755 |—o, 282 |— 0.183 |+ 0.361 |—0. 053 | 54.782 | 14 34 33.110 |-+0 31 38. 328 |-++ 0.093 47 Cephei (H.)S. P. 7 | 14 19 0.936 |+1. 312 |+0. 561 |4- 5.703 }— 1.336 |—0.042 | 7.134 | 14 50 45.530 [38.396]} ..- yw Bootis . 7 | 14 27 52.716 |—o. 593 |—o. 271 |4- 0.277 |+ 0. 288 |—o0. 035 | 52.382 | 14 59 30.798 38. 416 |+ 0.005 be Bootis. . . well 7 | 14 48 31.081 |—o. 681 |—o. 357 + 0,030 |+ 0. 324 |—0. 021 | 30.376 | 15 20 8.780 38. 404 |-+ 0.017 vt Bootis . . .| W.] 7 | 14 55 10. 364 |—0. 715 |-- 0. 391 |— 0.067 [+ 0,340 |—0.015 | 9.516 | 15 26 48.050 |-++-0 31 38.534 |— 0. 113 o Cor.Bor.(mean) .| E. | 7 | 15 38 44.324 |+0. 647 |~o. 521 |+ 0.077 |— 0. 348 |-+0.015 | 44.194 | 16 10 22.570 |+0 31 38.376 |-+ 0.045 19 Urs Minoris. . 7 | 15 42 35.521 |+1.792 |—1. 462 |— 1.972 |— 1.205 |+0. 018 | 32.692 | 16 14 II. 105 [38.413]} .- B Hereulis. ... 7 | 1§ 53 38.317 j+0. 554 |-0. 471 |4 0. 247 |— 0.310 |+0. 026 | 38. 363 | 16 25 16.760 38. 397 |+ 0.024 ¢ Herculis. . 7 | 16 5 19.133 |--0. 628 |—0. 557 |+ 0.113 |— 0.339 |4-0. 034 | 19.012 | 16 36 57.548 38. 536 |J— 0. 115 e Hereulis. . . .| E. | 7 | 16 24 15.619 |0.622 |—o. 590 |+ 0.124 |— 0. 336 |-+-0.048 | 15.487 | 16 55 53.862 |-+0 31 38.375 |4+ 0.046 NORMAL EQUATIONS. Ss. Se Assuming a’ =-+ 1. 198+ da’ circle W. [ o=— 0.023 + 1. 609 da’ + 1.732 dc +0. 378 d¢ | whence da’ = -+ 0.038 a’/=+0.799+ da’? « E, | -++ 0. 010 + 0. 857 Sa’/’ — 0. 337 dc +. 0. 445 dt da// == —- 0. 021 ¢ =—0.250-+ dc oO, | +0. 277 + 1.732 da’ — 0. 337 da/’ +. 15. 869 dc + 0. 329 dt dc =— 0.022 AT =-+ of 31™ 388.420 + dt L — 0. 002 + 0. 378 da’ +0. 445 da’? + 0. 329 dc + 8. 181 d¢ dt =- 0.001 a’ = + 18.236 (circle west); a” = + 08.778 (circle east); ¢— 08.272 (— with circle E.). Chronometer No. 1254, at 15" 17™ chron. time, ob 31™ 388,421 + 08,018, slow; losing 08.043 per hour. Transits of stars observed at the Naval Observatory, Washington, by Lieut. Charles Laird, with transit No. 1502, to determine the correction of sidereal chronometer Wegus 1254. 3 a Flexure Aberra- Dat N. f st — Transit over | and in- Level? | etal tion and Rate aint RA Chronometer ates SEDER yee 3 | & |mean of threads.| equality Noe “| colli- : are 2. correction. re 3 3 of pivots. ' mation. . O14 1884. hem. s. Ss. es 3 a Se Si him. Ss. Wis tts, 38% o June 20/ 11 Bootis. . . W.}| 7 | 13 24 30.454 |—0. 598 | 0.000 |+ 0 242 |-+ 0.061 |—0.073 | 30.086 | 13 55 56.965 |+0 31 26.879 |+ 0.073 4 Urs Minoris. . 7 | 13 37 57-950 |—2. 021 |-+-o. 218 |— 3.450 |+ 0.262 |—0.059 | 52.900 | 14 9 19.846 [26.946]| .. 33 Bootis . 714 3 6.974 |—0. 648 |+0.149 |— 0.167 |+ 0.076 |—0.032 | 6.352 | 14 34 33. 247 26. 895 |-+ 0.057 aw Bootis . 7 | 14 28 4.099 |—0. 594 |+-0. 105 |+ 0.252 |+ 0.061 |-0.008 | 3.915 | 14 59 30. 871 26.956 |— 0.004 6 Bootis. 7 | 14 39 25.317 |—v. 045 |+-0. 060 J+ 0.122 |-+ 0,065 |-+0. 004 | 24.923 | 15 10 51.972 |+0 31 27.049 |— 0.097 vi Bootis. .. .| E. 7 | 14 55 20.961 |-+4-0.715 |—0. 359 |—~ 0.058 |— 0.114 |+4-0.020 | 21.165 | 15 26 48.139 |+0 31 26.974 |— 0.022 v2 Bootis . 7 | 14 56 12.851 |4-v. 716 |—o. 332 |— 0.061 |— 0.114 |-++0.021 | 13.081 | 15 27 40.173 27.092 |— 0. 140 y- Coronze Borealis. 7 | 15 6 27.503 |-4+0.589 |—o. 256 |4+ 0.121 |— 0.096 |-+-0. 031 | 27.892 | 15 37 54.838 26.946 |+ 0. 006 « Serpentis . 7 | 15 12 6.307 |-+vu. 532 |—v, 222 |-+ 0.397 |— 0.091 |-++0.037 | 6.960 | 15 43 33. 786 26. 826 |+ 0.126 Groom. 2320 . .| E. 7 | 15 34 36.907 |41. 260 |—-o. 452 |— 1.417 |— 0.231 |40. 060 | 36.127 | 16 6 2.909 |+o 31[26. 782] NORMAL EQUATIONS. Ss. de Assuming a” =-+ 1.117 + da’ circle W. [ 0= + 0.007 + 0. 900 da’ + 0. 802 de + 0. 148 d¢ whence Ja’ == + 0.009 a’? —41.1564+ da” “ E. + 0. 033 + 0. 573 da’? — 0.493 dc + 0.059 d¢ da// = — 0.074 ¢ =—0.050-+ dec ce ee +- 0, 264 + 0. 802 da’ — 0. 493 Sa’’ +. 15.577 dc + 0. 218 bf d¢ ==—0.020 AT = + 08 31™ 268.950 + dr l -+ 0, 028 + 0. 148 da’ + 0.059 da’’ + 0. 218 dc + 8. 326.54 J df =—0,003 a/ = + 18.126 (circle west); a’ = + 18,082 (circle east); ¢ = 08.070 (— with circle E.), Chronometer No. 1254, at 14 35™.6 chron. time, 05 31™ 268,952 + 08.021, slow; losing o*.061 per hour. IN MEXICO AND CENTRAL AND SOUTH AMERIGA. 139 Transits of stars observed at the Nava! Observatory, Washington, by Lieut. Charles Laird, with transit No. 1 502, to delermine the correction of sidereal chronometer Negus 1254. ‘ 3} & Flexure Aberra- eanGuts : 5 Transit over | and in- : tion and Chronometer qo s ep Date. Neiae ct sar, gy | ca |mean of threads.| equality evel: | Avamathy, colli- als, : ne Se correction. He 2 2 of pivots. mation. pals Ge} ° OA 1884. Tis M8 a Se Ss S$: Ss. $ a hem S. 5. June23 |e Bootis.. .. .| W.| 7 | 14 8 25.619 |—0. 595 |—0. 043 |-++ 0. 204 |-++ 0. 296 |—0. 072 | 25.409 | 14 39 57.565 |+0 31 32.156 |— 0.027 B Bootis . 7 | 14 26 5.177 |—v. 711 |-+0,067 |— 0,041 |+ 0. 346 |—0.052 | 4.786 | 14 57 36.720 31.934 |+ 0.195 y? Urs Minoris. . 7 | 14 29 27.343 —1.474 |+0. 181 |— 1.661 |+ 0.859 |—0. 027 | 25.221 | 15 20 57. 194 [31-973] « Coronz Borealis . 7 | 14 58 17.179 |—0. 592 |-+-0.053 |— 0. 211 |-+ 0.294 |—0. 017 | 16.706 | 15 29 49. 118 32. 412 |— 0. 283 ¢@ Bootis . 7 | 15 2 10.329 |—v. 710 |+0.051 |— 0.039 |+ 0.346 |—0.012 | 9.965 | 15 33 42.062 |4+0 31 32.097 |+4 0.032 « Serpentis... .) E. | 7 | 15 12 1.357 |-+v.532 |~0.095 |-+ 0.145 |— 0.310 |—o.001 | 1.628 | 15 43 33.773 |+0 31 32.145 |— 0.016 . a Coron. Bor. (7) . 7 | 15 38 50.457 |4-0.648 |—o. 184 |+ 0.040 |— 0.355 |-0.029 | 50.635 | 16 10 22, 603 31.968 |+ 0. 161 yn Ursze Minoris . 7 | 15 49 25.886 |+1.776 |—o. 591 |— 0.988 |— 1.217 |+0. 040 | 24.906 | 16 20 57. 260 [32. 354] . a Herculis . 7. | 1§ 58 52.307 |+-0.730 |—o. 271 |— 0.036 |— 0.400 |-Lo. 051 | 52.381 | 16 30 24.442 32.061 |+ 0.068 « Ophiuchi . E. | 7 | 16 20 41.154 |+0.476 |—o. 211 |4 0.196 |— 0. 298 |+v.076 | 41.393 | 16 52 13.654 |--o 31 32.261 |-- 0.132 NORMAL EQUATIONS. s. de Assuming a@/ = -+ 0.939 + da’ circle W. [| 0o=— 0.002 + 0. 658 da’ + 1.127 0c— 0.401 df | whence da’ = —-0. 018 a//==+0.593+ da’? “ E. ++ 0. 209 + 1.094 Ja’// — 0.259 0c + 0.596 d¢ da// = — 0, 198 ¢ =— 0. 298 4+ dc Ee. — 0. 329 + 1. 127 da’ — 0, 259 da’? + 15. 203 dc — 0. 355 O¢ dc =-+0.020 AT =-+ 0b 31™ 328.107 + de. — 0. 062 —o. 4oI da’ + 0.596 da’ — 0.355 dc+ 8. 281 d¢ of =-+ 0.022 a/ = + 08.921 (circle west); a// = + 08.395 (circle east); c= 08.278 (— with circle E.). Chronometer No. 1254, at 15" 13™.2 chron. time, o¥ 31™ 32%.129 + 08.037, slow; losing 08.067 per hour. June28 | 5 Ursee Minoris . W.! 7 | 13:56 12.543 |—1.796 |—0. 567 |— 2.707 |-+ 1.326 |—0.064 | 8.733 | 14 27 47.670 |+0 31[38. 937] e Bootis. . 7 | 14 8 19.231 |—0.595 |—0. 234 |+ 0.236 j|+ 0.356 |—0.055 | 18.939 | 14 39 57.510 38.571 |+ 0. 204 8 Bootis . 7 | 14 25 58.796 |—o. 711 |—0. 365 |—- 0.048 |+ 0.418 |—0. 041 | 58.049 | 14 57 36.720 38. 671 |-+ 0. 104 6 Bootis . 7 | 14 39 13. 681 |—o. 645 |—0. 387 |+ 0.115 |+ 0.380 |—0. 031 | 13.113 | 15 10 51.890 38.777 |— 0.002 f Coronz Borealis . 17 | 14 51 26.669 |—0. 610 |—o. 416 |-+ 0. 199 [4 0. 363 |—0. 022 | 26.183 | 15 23 §.180 |-+0 31 38.997 |— 0. 222 Groom. 2320 i. 7 | 15 34 25.793 |4+1. 260 |—-1. 138 |— 0. 878 |-— 0.934 |-+0.011 | 24.114 | 16 6 2.670 |+o 31[38.556]) . wo Herculis. . 7 | 15 48 27.801 |--o. 505 |--0. 461 |-+ 0. 287 |-—- 0.359 |+0.022 | 27.795 | 16 20 6.537 38. 742 |+ 0.033 o Herculis . 7 | 15 58 45.860 |-+0. 730 |—o. 676 |— 0. 060 | — 0. 473 |+0.030 | 45.411 | 16 30 24. 407 38. 996 |— 0. 221 « Ophiuchi. . 7 | 16 20 34.904 |+0. 476 |--0. 450 |-+ 0. 333 |— 9.353 |-+0.046 | 34.956 | 16 52 13. 660 38. 704 |+ 0.071 d Herculis. . .| E.| 7 | 16 25 43.700 |-+0.645 |—o. 611 |-+ 0.072 |-- 0.419 |-+u.051 | 43.438 | 16 57 22. 180 |+0 31 38.742 |4 0.033 NORMAL EQUATIONS. Assuming a/ ee circle W. [ o=— 0.025 + 0. 732 da” + 0.940 dc-+ 0, 223 d¢ | whence da’ =-+ 0. 125 a//=+0.8484 da% « FE, -+-+ 0.157 + 0. 870 da’’ + 0.097 de + 0. 624 dt da// = — 0. 178 ¢ =—o0. 260+ dc we UE, + 0. 953 ++ 0. 940 da’ + 0.097 da’? + 14.659 dc + 0.051 dt dc =—0.072 AT =-+ 08 31™ 388.763 + d¢. + 0,027 -+ 0. 223 da’ + 0, 624 Sa// +> 0.051 dc 8. 342 dF dt =-+ 0.007 a/ = + 14,064 (circle west); @// = +-08.670 (circle east); ¢ = 08.332 (— with circle E.). Chronometer No. 1254, at 155 19™.8 chron. time, 0% 31™ 388.775 + 05.036, slow; losing o*.046 per hour. OW. o, 142 TELEGRAPHIC DETERMINATION OF LONGITUDES RESULTS: The first three of the following tables were furnished by Dr. B. A. Gould, for the measurement between Cordoba and Valparaiso. They give the Cordoba clock corrections, and the comparison of the Cordoba and Valparaiso time-pieces by signals sent from Valparaiso to Cordoba. The results of the foregoing observations are then given as follows: The fourth, fifth, sixth, and seventh tables show the clock corrections deduced from observations made by Lieut. Commander C. H Davis, Lieut. J. A. Norris, Lieut. Charles Laird, and Miles Rock, esq., first at~ the epoch of reduction on the nights on which signals were exchanged, and then, by applying the given hourly rate, at the epoch of the comparison of chronometers. The seventh table gives the differences of longitude deduced from the exchange of time signals between the various stations on each night on which signals were exchanged and observations made. The data for this table are furnished by the preceding tables of clock corrections and comparisons of chronometers. In this table the last column shows the wave and armature time (@ = 4 A’—A’”). In the measurements between stations where the comparison was effected automatically, this quantity may be regarded as the true value of the wave and armature time; that is, the time required for the electric impulse to pass through the line and overcome the inertia of the receiving instruments. But in the measurements in which the compari- son of chronometers was made by mirror signals the personal equation of the observer in noting mirror signals is involved in the quantity @; @ is also greater between stations where communication was made through a number of intermediate stations. For example, in the exchange of signals between Valparaiso and Lima connection was made through at Coquimbo, Caldeira, Antofagasta, Iquique, Arica, and Mollendo. Finally the resulting latitudes and longitudes of the various stations, reduced to the adopted land-marks at each station, are given. Data furnished by Dr. B. A, Could, Director of the Cordoba Observatory, for the measurement between Valparaiso and Cordoba. Cordoba clock in the circuit. Date. Cordoba clock. At Cordoba sidereal time. 1883. Re Wt $3 he mS. November 27 . 3 4 30.0 +10. 008 3. 4 40.008 November 29 2 8 42.0 +11. 398 2 8 53.398 November 30 2 16 16.0 +11. 885 2 16 27.885 December 7 2 35 26.0 +14. 473 2 35 40.473 December II . . - 2 53 55.0 +15. 116 2 54 10.116 December 17 . 3 13 «18.0 +18. 000 3. 13 36.000 December 22 2 8 40.0 +18. 236 2 8 58.236 IN MEXICD AND CENTRAL AND SOUTH AMERICA. Data furnished by Dr. B.A. Gould, Director of the Cordoba Observatory, for the measurement between Valparaiso and Cordoba —Continued. Valparaiso chronometer on the line, < Valparaiso Ep Cordoba sidereal Date. chronometer! 2 Cordoba clock. At titae: 3 ‘ a 1883. A. om. S. he mes, $i; A, mS. November 29 . . . 56 32.0 34 2 14 43.712 -+-11. 399 2 14 55.111 58 41.0 26 2 16 52.713 --11. 400 2°07 Acti3 Io oO Il 2 19 TI.7I5 -L11. 400 2 19 23.115 November 30 . I 3 IL0o 37 2 21 22.428 +11. 887 2 21 34.315 I 5 44 2 23 17.440 +11. 888 2 23 29.328 I 7 44 2 25 11.437 +11. 888 2 25 23.325 December 7 . I 23 42.0 43 2 41 52.604 +14. 471 2 42 7.075 I 26 33.0 43 2 44 43.618 +14. 470 2 44 58.088 I 27 59.0 28 46 9. 622 +14. 470 46 24.092 December ir. . . I 40 14.0 40 2 58 25.935 +15. 118 2 58 41.053 I 43 35.0 47 3. IT 46.941 -+-15. 120 3. 2 = «2.061 December 17 2 8 7.0 39 3 26 19.818 -{18. 000 3. 26 37.818 2 10 5.0 13 3 28 17.822 --18. 000 3 28 35.822 December 22 I 57 55.0 29 3 16 10.597 +18. 234 3 16 28.831 1 58 53.0 | 33 3 17 8.599 +18. 234 3.17 26.833 2 0 27.0 12 3 18 42.592 +18. 233 3 19 0,825 2 1 34.0 26 3 18 49.600 +18. 233 3 20 7.833 Cordoba clock corrections. Date. Clock time. At 1883. he Mm. 3 November 27 . . I 53.0 + 9.948 3 53-0 - 10. 050 November 29 . I 8.0 +11. 380 2 56.0 +11. 410 November 30 . . . I 32.0 +11. 870 2 57.0 4-11. 900 December 7... - I 32.0 +14. 493 3 18.0 -+14. 460 December 11 .. . I 32.0 +15. 062 3 24.0 +15. 135 December 17 . - I 53.0 +17. 997 3 41.0 +18. 000 December 22. . .- I 53.0 +18. 257 3 49.0 +-18. 225 143 144 - TELEGRAPHIC DETERMINATION OF LONGITUDES Final chronometer corrections from observations made by Lieut. Commander C. H. Davis. Place. Date. ae eee oy at so Hoiny-; “Epoch mt at cath | of reduction. Sete ROHS aa comparison. 1883. hw mss. ho Mm. 5S. a he mM. he mS. Vera Cruz . .| Mar. 31 | 1470] 14 12.0 |-6 20 8.205 |+-0.085 | 16 8.0 |—6 20 8,041 Apr. I/ 1470] 14 7.0/6 20 6,232 |+ .078] 15 37.0 |—6 20 6,115 Apr. 2| 1470] 14 23.0|—6 20 4.450 |+ .074| 15 46.0|—6 20 4.348 Apr. 6] 1470] 15 11.0 |—6 I9 57.039 |+ .077] 16 13.0 |—6 I9 56.959 Apr. 9| 1470 | 14 38.0 |-6 19 51.596 |+ .075 | 16 16.0 |—6 19 51.474 Apr. 11] 1470 | 18 20.0 |-6 I9 47.792 |+ .071 | 16 59.0 |—6 19 47.888 Valparaiso. .| Nov. 5 | 1254 | 23 9.2 |+o0 48 35.933 |— .002 noe Sue Nov. 6] 1254 | 23 54.6 |t+o0 48 35.737 |-— .013]} 2 52.6 |+o0 48 35. 698 Nov. 7] 1254] 0 10.6 |-+o 48 35.356 |-— .o16 Nov. 8| 1254 | 23 11.6 |+0 48 35.044 |— .oIO Nov. 10] 1254 | © 40.8 |+o 48 34.918 |— .005 { socaay the Se Nov. 13] 1254 | 0 2.9 |+o0 48 34.290 |+ .008| 2 54.8 |+o 48 34.313 Nov. 14] 1254 | 0 52.8 |+o 48 34.536 |+ .008 | 2 56.2 |to 48 34.552 Nov. 16] 1254 | © 25.3 |+0 48 34.559 |+ .004]; 3 9.1 |+0 48 34.570 Nov. 17] 1254] 1 20.9 |+o 48 34.780 |+ .o15 | 3 14.4 |+0 48 34.808 Dec. 7] 1254] I 14.1 |+o0 48 38.680 |+ .o21 1 21.0 |+o0 48 38.682 Dec. 11] 1254 | I 35.2 |+0 48 40.740 |+ .024] I 39.0 |+0 48 40.742 Dec. 17] 1254] 3 16.3 |+0 48 44.667 |+ .o15 I 39.0 |+o0 48 44.643 Dec. 17 | 1254 ras a ibd, 2 2 2.0}+0 48 44.648 Dec. 18 | 1254 | 2 42.8 |+0 48 45.098 |+ .024] 1 44.8 |4o0 48 45.075 Dec. 20] 1254 | 2 44.5 |+0 48 46.609 |+ .026{ 1 23.3 |+o0 48 46.574 Dec. 22| 1254} 3 4.8 |+0 48 47.422 |+ .018| 1 54.0 |4+u 48 47.401 Dec. 24] 1254 | 3 10.6 |+0 48 48.636 |-+ .032] I 55.3 |t0 48 48.5096 Dec. 26| 1254 | 3 12.3 |+0 48 50.480 |+ .044| 2 2.4 |+0 48 50.429 1884. Arica. . . .| Jan. 21] 1254 3.15.9 |+0 54 32.756 |-+ .063 6 15.0 |+0 54 32.944 Jan. 23| 1254 | 4 3.9 |+0 54 35.895 |4+ .065 iia 5: Se Feb. 2] 1254 | 6 17.4 |+0 54 54.993 |+ .113| 6 54.1 |+0 54 55.062 Feb. 4| 1254 | 3 48.9 )+0 55 0.714 |-+ .134/ 7 4.3 |+0 55 1.150 Feb. 4} 1470 | 10 54.8 |—4 33 4.749 |— .020] 12 50.3 |-4 33 4-788 Paita . . . .| Mar. 3) 1254] 7 25.4 |+0 12 41.812 |+ .089| 7 27.4 |to 12 41.815 Mar. 9| 1254 | 6 40.0 |4+0 12 54.548 |+ .089| 6 53.1 |to 12 54.568 Mar. 13| 1254 | 6 18.8 |+0 13 3.033 |4+ .082| 7 10.7 |to0 13 3.104 Mar. 14| 1254 | 5 34.8 |+0 13 4.930 |4+ .080/ 7 12.4 |t+0 13 5.060 IN MEXICO AND CENTRAL AND SOUTH AMERICA, 145 Final chronometer corrections from observations made by Lieut, J. A. Norris, | if | Chro- Place. Date. | nome- Epeel “a at es | Hoan ? Epoch at at aah : ter. PoE DGH Of seduction, | TBs “SOMpansamy oy comparison. weep ee 1883. We ite bs Nhs, ’ Wb talib 8D AS MBS 68 | Galveston Mar. 31 j-8298 | 55 OSL. ore 36. 566 |-0.079 far 3.0 —I 10 36.714 Apr. 1 1295 13 0.0 I 10 34.698 {4 .075 | 10 33.0 —i 10 34.882 Apr. 2 1295 i 9 35.0 I 10 33.216 +} .074 110 42.0 =-1 10 33. 133 Apr 6) 1295 | II 0.0 ;—1I 10 24,823 Lp 090 II 9.0 —1 10 24.809 , Apr. 9 1295 | 10 10.0 }--1 10 18.613 ; |- .089 II 12,0 —I 10 18. 521 Apr. 11 | 1295 | 12 45.0 |—I 10 13.992 + .095 ' II 54.0 —I 10 14.073 Arica . Nov. 5); 1295 | 22 23.6 |+o 31 10.973 | + . 024 | | Nov. 9 | 1295 | 22 0.3 |+0 31 13.070 + .024 27 9.9 8 B31 «13. 194, | Nov. 10 | 1295 co 51.9 |+0 31 13.651 |+ .024 | ' Nov. 13 | 1295 22 28.9 +0 31 15.380 + .020 27 17.3 +0 31 15.475 | Nov 14 | 1295 | 22 40.7 oa O 31 15.888 '+ .022 27 18.7 +0 31 15.990 Naw ie: 1295 22 10.4 +0 31 17.006 /+ .021 27 31.6 +0 31 17.118 | Nov. 17| 1295 | 22 9.8 +O 31 17.502 |+ .022 27. 36.9 +O 31 17.622 | Nov. 18! 1295 | 22 34.6 +0 31 18.074 [4+ .025 , | Lima _ Dec. 16, 1295 © 46.6 +0 4 35.511 |+ .046 ! : Dec. 17| 1295 I 19.1 .f-0 4 36.673 |+ .047; 2 1.6 +0 4 36.706 Dec. 18| 1295 | 0 49.7);+0 4 37-783 |+ 2 2 73-0 4 37.846 | Dec. 20 | 1295 2 19.4 |+0 4 40, 380 |+ .053 1 45.8 he “4. 40. 359 Dec. 21) 1295 I 13.2 |+0 4 41.594 |4+ .053 és Dec. 24 1295 | 1 41.5 |+0 4 45.638 |4+ .053 | a8 te 4 45.670 Dec. 26' 1295 | 1 47.7 |+0 4 47.920 '+ .O41 2 24.9 +0 4 47.945 { 1884. Paita . ., Jan. 25| 1295 | 5 IL.gi—v 10 54.817 ‘+ .080 : Jan. 26/ 1295 | 3 53.0.-0 10 53.480 |+ .052 ! Feb. 1/ 1295 | 4 50,0;—0 10 46. 016 + .058 | ; Feb. 2! 1295 | 4 39.1 \--0 10 44. 693 cre . 056 7 16.6 +0 1D 44.546 : Feb. 3| 1295 | 5 5.8 io 10 43. 305 1+} . 063 | Feb. 4/| 1295 | 4 30.6 .—0 I0 41.560 + 085 | 7 26.8 \—O 10 41, 310 ‘Web. 4° 1684} 11 23.5 [—5 35 26.162 F 048 | 13 9.5 5 35 26.247 Panama Mar. 3/1295 6 4.6 |-0 3 38.398 4+ .069, 7 50.1 --0 3 38.293 | Mar. 9 | 1295 6 33.1 '—0 3 30.099 4 -0§6 7 15.9 —v 3° 30.059 , Mar. 13. 1295 | 6 39.0 '-O 3. 24.029 ++ 067 7 33-5 -9 3. 23.968 | Mar. 14 1295 | 6 15.3 L3G 3 22.480 + . 063 2 35.3 =O. 3.22. 396.: Mar. 22; 1295 | 6 49.5 [0 3. «11.924 [+ .055 | 8 43.9. -0 3 11.819 : Mar 23 | 1295 | 6 54.8 i 3 10.583 |4+ .060 | 8 9.6 —v 3. 10,508 | aes 24 | 1295 6 54.8 o 3. 9.093 Le 059 | 8 31.3 -4 3. 8.498 11959 p L——19 146 TELEGRAPHIC DETERMINATION OF LONGITUDES Final chronometer corrections from observations made by Lieut. Charles Laird. | Chro-} 4, : Aé ' Ae Pace, | Date (name etn, | gLBEES, | Tine omarion) yp Ach | 1884. hem. ho me Ss. Q A, om. A, om. 5. La Libertad . | Mar. 22) 1470 | 19 43.4 I 48 17.262 |+0.066 | 13 49.8 |—5 48 17.651 Mar. 23; 1470' 17 58.2 ps 48 16.591 |+ .007 | 13 15.6 |—5 48 16.624 Mar. 24| 1470 | 18 27.0 —5 48 16.207 |+ .070] 13 37-2 |—5 48 16.545 Mar. 25 | 1470 | 13 38.9 -s 48 14.240 |+ .106 | 16 32.3 |—5 48 13.934. Mar. 27 | 1470 | 15 28.6 (os 48 12.562] 0.000] 16 8.2 |--5 48 12.562 Final chronometer corrections from observations made by Miles Rock, esq. | Chro- At At Place. Date. |nome-| Epoch e at epoch Hoary. | Soe oF at epoch i reduction. : rate. |comparison. : ter. of reduction. of comparison. | | | | 1884. he Mm. he om. a hk. om hem Ss. ' Guatemala. . | Mar. 25] 1527 | 8 51.4 j—O 59 21.301 |—0. 064 | 11 28.7 |—o 59 21.468 Mar. 25 | 1527 | 13. 17.7 |—O 59 21.583 |— .064 Mar. 27| 1527 | 8 35.2 |—oO 59 25.002 |— .129 Mar. 27 | 1527 | 13. 15.2 |—o 59 25.604 |— .129 me EAED moe 20) ae IN MEXICO AND CENTRAL AND SOUTH AMERIUA. Differences of longitude deduced from exchange of time signals. | uM na = > o 8 ui | 2/83 E5 Eastern and Western, Stations. Date. 6 “ 5 Ate and Afyw Ate — Atw oe T’ and T” A’ and A’’ | (A74+A’’)| © : 3 a : ° Eig 13° BL gies z oe |Z Z Ah. ms. hem se hem. Ss. mM 3 Mm. 9. Ss. Galveston. . 2. 2... 2. N.| E. 9 | —1 10 36.714 15| 5 4 6,862 5 24.465 83, Mar. ; 24.342 | .123 VeraCruz.. 2... rs Sore 314 D.| W.| 10 | —6 20 8.041 eae ar} § 4 7.108 5 24.219 Sanu Galveston. . 2. ‘ N.| E 12 | —I 10 34. 882 22; 5 4 6.575 5 24.658 » Apr. 1.2 5 24.524] .134 Vera Griz ee ew, a } 1883 14 D.| W. Io | —6 20 6.115 Pe eens 26| 5 4 6.844 5 24. 389 Galveston... 1... ..4. N. | E. Ir | —I 10 33.133 21) 5 4 6.654 5 24. 561 ss I, 21 5 24.428 | .134 Vera Cruz. 4 ee Be } 1883, oe 2{ D. | W. 9 | —6 20 4.348 5 93 5 261 5 4 6.921 5 24.294 gorda ee ‘ N. | E. 12 | —1 10 24. 80 oO 4 7.51 5 24. 635 Galveston \ 1885, on of ee | gee iee | 5 515 5 24.512 | .122 Wierd Cruze a Gon ae 6) 4 D.| W. 9 | —6 19 56.959 43! 5 4 7.760 5 24. 390 a oo N. | E. —I 10 18.521 48 | 5 4 8.306 5 24. 647 Galveston + 1885, ee of 9 5 5 9 32.953 5 24.518 | .128 Vera Cruz. . i D. | W. Io | —6 I9 51.474 51] 5 4 8.563 5 24.390 7 Galveston. 2. 2 2 2. \ 1883 jhe nf N. | E. 12 | —I 10 14.073 bg acid 43 | 5-4 8.996 5 24. 819 5 24.700 | .120 Vera Cruz... .. : pane? D. | W. 8 | —6 19 47. 888 46} 5 4 9.235 5 24.580 5 24.504 | .127 i 22 33. 14. 760 : AIGA Hey cas os ey he ES \ 1883 — i3{ Ne] Bf) PO Bt 35-478) pee | 2) eee 597 | 5 14.7 @ ghee | Lend Valparaiso ........ i D. | W. 1o | +0 48 34.313 74 | 0 22 32.590 5 13.753 i - 338 14. 776 wie Paty nee [1%] 8/1288] oy ae] ] SEE] SATE se] os Valparaiso : A ‘ 10 0 48 34.552 4 : i ; O 22 31.272 14. 820 eee ae eee \ 1883, Nov. 16 { Wee) 88 nee Se Sma aia ie ee) | oe | ee 5 14.324] -496 Valparaiso .. . 1... , , D.| W.}| 11 | +0 48 34.570 73| © 22 31.280 5 13.828 Arica... . : pase N. | E. 12 | +0 31 17.622 oc an ae 75 | © 22 31.904 5 14.718 ve eee Valparaiso .... 1... } eee a D.| WwW.) ar | +o 48 34. 808 | 73] 0 22 30.993 5 13.807 : 5 14.278 | .491 | 6. eee Tea One \ 1883 Dec 7{ Pele ee en 48 24. 210 : i: = = a = 14? | 29 46.272 | 130 , . - I Valparaiso... 1. ws D.| W. 14} +0 48 38. 682 1 18 10.611 | 29 46.40 Cordoba... ...... 982. ; G. | E. +o o 15.118 9 eae ose 1 18 11.658 | 29 46.034 saab aye \ a 186 Valparaiso... .- 1... js ee { D.| w.| 13] +0 48 40. 742 ' 1 18 11.938 | 29 46.314 18 12. 6. CP Oe Oe eae \ 1883 Dec 174 poles bunnies | 0 48 26, 648 : . ie ah ” 7 bs 29 46.038 | .134 3 , ; i 29 46.172 Valparaiso... . 1... D. | W. 13] +0 48 44. 648 HHS: 122920 6. 18 : Cordoba .......-.--. G. | E. +o 0 18.235 | 6 48 29.166 I Me la 29 46.306 | .126 Valparaiso } 1883, REE: 22{ D.| W.| 13 | 4-0 48 47. 401 1 18 15.597 | 29 46.431 29 46.198 | .132 | 21 37.838 Valparaiso .....-.. ‘D. | E. 13 | +0 48 44. 643 | 0 44 7.937 fo) ee eee Sie28 21 37.064 | .774 Lima } 1883, Dee Me N.| w.| 13 | +0 4 36.706 56 | © 22 31.647 | 21 36.290 Sins cae Seehiey ts cca Tae ONG : | . 6 Valparaiso... 1 1 ss Dy] Be) 98) PORE AIE ye aay) 12) OF OE SEE) an a6 boy | 988 Li \ 1883, Dec. 18 { n.| w 13 | +o 4 37.846 73 | © 22 31.110 | 21 36.119 Ma. . 2. «6 s+ © ©» a : : i . 676 Valparaiso... .-- 5: D.| E.| 14 | +0 48 46.574 ee 72 | 0 22 28.548 | 21 37.676 | Seas | ae Li \ 1883, Dec. 20{ N.| W 6| +0 4 40.350 70 | 0 22 30.159 | 21 36.065 IMA 2s on A 28 dhs Se US : . ‘ 61 | © 22 25.262 | 21 37.664 Valente goed asa Dey B.| ft | PO ABA G0C oy a0, 5 21 36.789 | .875 i \ 1883, Dec. 24 N.| W 12| +0 4 45.670 | 61 | © 22 27.012 | 21 35.914 Ma. . 2. 6 © © © we we ee . . : | 2 24.8 58 Valparaiso. 1, -- +=: D.| E.| 11 | +0 48 50.429 gape) Tb OOPS | AE aR?) oe genre | cere i } 1883, Dec. 26{ n. | w 6| +0 4 47.945 73, | 0 22 26.532 | 21 35.952 HMALe eS Grier ee WO Re : : 21 36,880 | .812 —_———— So | 148 TELEGRAPHIC DETERMINATION OF LONGITUDES Differences of longitude deduced from exchange of time signals—Contimued, - = SSE Sg eee : [geese 5 oS 84 Eastern and Western Stations. Date, = [ees 5 Mp and A/a. Ae — Abo oe T’ and T/% AZand a’ |B (A’ +A’) oo feu Bo cere | ' iS : ele la ! - my =