CiHM Microfiche Series (Monographs) ICMH Collection de microfiches (monographies) Canadian institute for Historical Microreproductions / Institut canadien u iiicroreproductions historiques AAA Technical and Bib!' graphic Notes / Notes techniques et bibliographiques The Institute has attempted to obtain the best original copy available for filming. Features of this copy which may be bibiiographically unique, which may alter any of the images in the reproduction, or which may significantly change the usual method of filming are checked below. D D □ n D Coloured covers / Couverture de couleur □ Covers damaged / Couverture endommagee □ Covers restored and/or laminated / Couverture restauree et/ou peliiculee I Cover title missing /Le titre de couverture manque I I Coloured maps / Cartes geographiques en couleur Coloured ink (i.e. other than blue or black) / Encre de couleur (i.e. autre que bleue ou noire) I I Coloured plates and/or illustrations / Planches et/ou illustrations en couleur Bound with other material / Relie avec d'autres documents Only edition available / Seule edition disponible Tight binding may cause shadows or distortion along interior margin / La reliure serree peut causer ce I'ombre ou de la distorsion le long tie la marge interieure. Blank leaves added during restorations may appear within the text. Whenever possible, these have been omitted from filming / Use peut que certainespacss blanches ajoutees lors d'une restauraticn apparaissent dans le texte, mais, lorscLe cela 6ts:t possible, ces pages n'ont pas ete filmees. L'inrtitut a microfilme le meilleur exemplaire qu'il lui a ete possiule de se procurer. Les details de cet exem- plaire qui sont peut-ctre uniques du point de vue bibli- ographique, qui peuvent modifier une image reproduite, ou qui peuvent exiger une modification dans la metho- de normale de filmage sont indiques ci-dessous. Coloured pages / Pages de couleur I I Pages damaged/ Pages endommagees □ Pages restored and/or laminated / Pages restaurees et/ou pelliculees r~^ Pages discoloured, stained or foxed / I I Pages decolorees, tachetees ou piquees I Pages detached / Pages detachees I y Shovklhrough / Transparence D D D D Quality of print varies / Qualite inegale de I'impression Includes suppler ntary material / Comprend du materiel supplementaire Pages wholly or partially obscured by errata slips, tissues, etc., have been refilmed to ensure the best possible image / Les pages totalement ou partiellement obscurcies par un feuillet d'errata, une pelure, etc., ont ete filmees a nouveau de fafon a obtenir la meilleure image possible. Opposing pages with varying colouration or discolourations are filmed twice to ensure the best possible image / Les pages s'opposant ayant des colorations variables ou des decolorations sont filmees deux fois afin d'obtenir la meilleure image possible. Additional comments / Commenlaires supplementaires: Continuous pagination. This item is filmed at the redaction ratio checked below / Ce document est lilme au taux de reduction indique ci-desEcus 10x 14x 18x 22x 2bx 30x i 12x 16x 20x 24x 28x 32x The copy filmed here has been reproduced thanks to the generosity of: tcolc polytcchnique, Universite de Montreal, Bibl iotheque The images appearing here are the best quality possible considering the condition and legibility of the original copy and in keeping with the filming contract specifications. Original copies in printed paper covers are filmed beginning with the front cover and ending on the last page with a printed or illustrated impres- sion, or the back cover when appropriate. All other original copies are filmed beginning on the first page with a printed or illustrated impres- sion, and ending on the last page with a printed or illustrated impression. The last recorded frame on each microfiche shall contain the symbol — ^ (moaning "CON- TINUED"), or the symbol V (meaning "END"), V 'lichever applies. Maps, plates, charts, etc., may be filmed at different reduction ratios. Those too large to be entirely included in one exposure are filmed beginning in the upper left hand corner, left to right and top to bottom, as many frames as required. The following diagrams illustrate the method: L'exemplaire film6 fut reproduit grace i la g6ndrosit6 de: • Ecole poTytcchnique, Universite de Montreal, Bibl iotheque Les images suivantes ont 6x6 reproduites avec le plus grand soin. compte tenu de la condition et de la nenet* de l'exemplaire film*, et en conformit* avec les conditions du contrat de filmage. Les exemplaires originaux dont la couverture en papier est imprimAe sont filmis en commencant par le premier plat et en terminant soit par la dernidre page qui comporte une empreinte d'impression ou d'illustration, soit par le second plat, selon le cas. Tous les autres exemplaires originaux sont filmAs en commencant par la premiAre page qui comporte une empreinte d'impression ou d'illustration et en terminant par la derniAre page qui comporte une telle empreinte. Un des symboles suivants apparaitra sur la derniAre image de cheque microfiche, selon le cas: le symbole -^- signifie "A SUIVRE ", le symbole V signifie "FIN ". Les cartes, planches, tableaux, etc., peuvent etre filmAs A des taux de reduction diffArents. Lorsqua le document est trop grand pour etre reproduit en un seul clichA. il est film* d partir de I'angle supArieur gauche, de gauche i droite, et de haut en bas, en prenant le nombre d'images nAcessaire. Les diagrammes suivants illustrent la mAthode. 1 2 3 1 MICROCOPY RESCUTION TEST CHART ANSI ui.d ISO lES! CHART No 2 1.0 ' St 2 8 iTli I.I MM [IZ2 [2.0 1.8 !!!! 1 .-. ^ \.z5 '•4 il.6 ^ APPLIED IM^GE Inc PUBLICATIONS UK Ti:i-. DOMINION OBSERVATORY OTTAWA, (■ANAT)A Vol. IV. No. U) ORBIT OF TIIK SlMXTHOSCOIMC lUXAHV .TJ «- CVCXI BV J. 1). (■ANN(J.\, M.A. 32 d- (Vgni (a = 'J()'' 12'", 5= -f-47° 24', maej. ") 1"). typo (;.")) was annoiiiurd a binary in L. O. B. 4, p. 90, from four measures giving a raiif^e of HO irV(;Nl l):it.. I'.MIH, Oct. 3i)-jr> I'.MMI, Oct. ■> Xi I'.lll, Auk. 31 3'.t 2,41S,J1.-) J.-i .■>N'.' 33 L'.4I'.I._'SII 3U Juliiiii Diiv Vclocit -18-4 H-14ti -21) 3 ri.i ".C'DIKJ Hl'Mllluill + 00 + 104 + 9 3 TABLE IV OTTAWA OBSKltVATlONS OK 32o;(V(;NI 3714 3733 374.-) 3762. 3707 , tiUl. 1)122 ()12S (il37. 0138. t)140. 11103. lilOS. 0170 01H8. Cl<.)7. 0215. ()222 . 0227 , 0243. 0205. 0275 . 0300. 0300 0355. 0302 . 0308 . , 03S4 . . 0415 . 0425 . . 043S . . 0453 . 0503 . . 0511.. 8,952 1)00 -11 4 957 005 -12 902 ■ 580 -11-0 904 ■ 070 -14 7 905 ■ 5'.«) -13-8 0.300-820 -34 303-774 -22-7 3(H1-817 -20-9 310-834 -29-3 314-733 -28-4 317-789 -31-4 322 - 733 -23-9 323-049 -32-5 327 - 7!K) -39- 1 329-855 -41 331-753 -38- 1 335-722 -34-5 338-731 -40 341 738 -25-2 348-074 -24 2 350 070 -22-4 359-727 -40- 1 309-033 -41-9 370 593 -34-1 387-0t)0 -41-5 388-007 -34 5 390-590 -34 392-032 -29-5 397 032 -35-5 401-592 -20 8 404-581 -34-0 -107 551 -25-4 420-502 -34 3 427-539 -3-'.3 592-2 597 2 (')02 2 f.04-3 (i05-2 770-4 773-4 770-4 "SO -4 784-3 787-4 792 3 793-2 797-4 709-5 801-4 805-3 808-3 811-3 818-3 820-3 829-3 8;i9-2 ^40-2 857-3 858-3 800-2 802-2 807-2 871 -2 874-2 877-2 890-2 SQ7 . '> + 1 + 5-2 + 5-8 4- 2-6 + 3-4 - 9 + 2-3 + 4 G — 31 - 1-4 - 4-4 + 4 3 - 4-6 - 11 1 - 12 - 8-9 — 5 - 10 + 5-0 + 60 + 8-0 — 81 - 8-4 + 0-8 - 0-5 + 0-5 + + 4-7 ± 0-0 + 8-9 + 11 + 10-5 + 1-9 ^^OLi POLmCHtum BIBUOJHr:-r Oliltir Oh TIIK SI'l.(THnS( ()IM( IIINAKV .').'«' (XiM 153 TAlll.i: IV li'lTAWA ()HM,I{\ ATldNS dl' :l'9>( V(iM (■,i,iiii,i„,l PUtc IV, 1 1 liritiH lililJ t>71l tiH33 tiOJ'.t f.or.2 tmr.ii t'>(l72 iH»H:i 70iX) 7015 70f)l 70S4 70", 10 710J 7110 7120 7110 71t),5 71,S7 72 It) 7221 72">0 7'2<)0 7322 73 '.2 7360 73; 1 73:0 73! 15 7424 7434 7448 7451 7455. 7474 748S, 7492. 7555 . "«20. 7030 7003. 7679. 7690. 7701. 7712. 7719. 7730. Julian UiiV 2 420. Vilocitv 2,421, . 430 57 1 -.34 (1 too 520 -.35-7 104 535 -28-8 47s 470 -.38-4 511 44H -34 3 51)0 '.K)l -30-9 r)02 S50 -17-7 000 H(r2 + 0-5 021 81)2 -20 6 ()2l-8;)5 -22-4 02H ■ S.50 -10-8 037'.>v50 -10-2 044 H;iO - 1 1 5 «)5-802 -12-1 680 -OIH) - 18 0H7 • 7()<) - 7-8 «'i93 ■ 700 -18-4 008 844 -12 1 707 ■ 703 -13 2 720-737 - 5 4 733 ■ 7t)5 - 3 742 032 - .s-1 740 7(V) + 4 3 7.50 617 -112 7.58-027 - 12 770-403 - 7-0 779-514 - 71 780 -.597 - 5-8 794-494 - 2-0 801 471 - 5-1 807-602 - 2-0 814-495 -10-5 824 476 - 4 1 K33-464 -10 I 843 - 470 -100 8.52-4.53 - 6-4 800 -4.37 + 5-0 870-462 - 10 880-474 - 4-6 89 1-40)0 - 3-0 940-913 + 1-7 973 865 - 4-0 986-774 + 51 (X)3-0,88 + 3-9 015-692 + 70 028-751 + 9-1 030-7.55 + 0-9 044 837 - 4 050 S;}5 - 2 a58-686 - 5-3 rimi«p IHH) 2 930 1 934 1 918 1 9H1 1031) 5 1072 5 1(»79 5 1091 5 1004 4 IOCS 5 1107 4 1114 1 11.35 4 11,50 3 11.57 4 1103 4 1 108 4 7 4 20-3 33 4 42 4 49-3 SO -2 .58-2 70- 1 79- 1 86-2 94- 1 101 • 1 107 -2 1141 124-1 133 - 1 143 1 1.52 1 ICyOO 170- 1 1801 191 1 240-5 273-4 2.86-4 303-3 315-3 .328-4 330-3 344-4 3.50-4 358-3 lil'.xiillllll ■f 2 - + - 4 - 4 - H - + 10 + 3 •f 3 + 1 - + 8 + 2 - 3 + 3 + 5 + + 12 - 3 + 6 + + + 1 + 4 + 1 + 3 - 5 + - - 7 - 4 + 6 - - 5 - 4 - 3 -10 - 1 - 1 + 2 + 4 - 2 1 at n Hi.u \ii(i\s (ii rriiv imimimon t 8157. 8168. SIHO HI (Mi S2(M >*2t2 8215 8224 S2:tn K242 8248. 8261. 8270. 8271. 8277. 8284 ,S2<)<.> 8302 8327. 8353. 8402. T.\nr,F IV OTTAWA (>ll.-'l:H\.\II(iN-! dl .i.>w.( \(.M (,„„/„,/,,/ I'lM.' .lullHti l>;> V.ImmIV .(X,l S()l - 07ti 77s -i. 2 3 (liH) 7(');) -10 .■. lot) SKI - 4 122 ."I - 2 liC! .Wl - () IH'.I-.WJ -11 1 14»> "13(1 — / ■ .") 170 44H -Us ISS r>l() -I.") 212 434 - r. 1 314S.')5 - 7 1 342HfiH -17 7 3ti2H4:t - 17 3 37!»S2'.I -21 3',i4 sue, -10 4 30SH33 -1(1 s 407 ■S27 -IS 7 414 S31 -lH-7 42:) 700 -i:> 3 420-772 -11 7 43.'', . 777 -10 5 440 771 -20 2 447-774 -22 (1 4riOHt'iO -10-2 401 700 -32-S 47 1 732 -22-K 478.077 -23-4 4Hr)-0Ot -21 4 49.-) (ill -21 3 51.S..-,6i) -43-3 546 534 -45-2 503-434 - 37 - 1 I'h; 301 4 3'H) 3 4(Hi ■» 4J2 ■► 4.13 1 4 n, 1 170 iss 1 .■)12 Oil -1 OliJ 070 4 4 O'll (iOH I S 707 1 714 4 7'.'i 3 7.'0 1 73.1 4 740 1 717 1 7(iO .3 701 4 771 3 77S 3 7S5 2 705 2 818 2 810 1 893 lt.-l.|.j:il + I 8- 1 4 3 + 6 + 12 0' (- 91 - 19 - 15 + + + + — .■> 7 0-7 4 4 7-S 3-S 5 0-7 4 0-3 2-2 2-8 5 6 3-7 12 3 11 2 5-7 uuiUT uj iiii; .->n.rTiuj.s(.i)ri(. iji.\Ain oj * i u.m MI-.ASI lU.S (>1 .l.'»M ^(,M Kadiul \"olocity :<7I1 Vcl I \Vt f II .1 1 - J^) -l.'i :>-) - S 12 + ■»■'.() :i::i;t Vrl ! \Vt - 1-71) - 9 M -, ()7 - JN 11-4 1 m; f ij ! 1 - ^'H j J - :m:) I 1 - :. (H) I 1 - It I j ■2 or, II) IJ 12 l)-2,S 12 r. iirij Vrl, ' \Vl i t 7 S.'i - a 51 f 2 21 V(l \Vi 2 71 II i,s :i7i.7 V. 1 \\ I I. ir •I iij :; Is 017 II) 7il 012 0-2S - II li - 11 - - II II i:. o i:i U-2S i:is i.iii V, I U. .i7 :t7 .".i; .ii) :!7 i:> 10-77 ."lO iK) is '.Ml Is !h; :.! 70 i:, 20 -:i.i-.i2 -2<,i HI -:t!i:ir. -II ih; -411^ ! - II (U r II2',I - (II - 0-2S :!i I.IJJ \ . I U t 2s ss .;o .'ill .!.-. !l"l :i2 r.K :i:i 11) .i'l lii I :;:; i.-> "i ,::. i:! } 27 17 1 » 10 III i I - ;)2 s:; + II (HI -t o III - 2S 63516—2 i.v; I'l hill \ I in\- (ii I III iHiMi\|u\ u|i-i i(\ \ una Ml \>l 111 > III : «' ( ^ { ,\ I r«»i/ir.«i.j i"i vtc, l.-iI'Milli i:ij;i ii.'ij IMll Mi.'l lll'p JIKI t I'l.'i ii>i l:iHi Tip.". l.fjii iiTi'i l.ill v'l l.MII oil Jjs'.l STJ i.'i.'i 'iik; \V.,>;l,t.,| mean V. V, Curv, Vcli.iitv \.l -.is hi .III _'ii .ill Jl IHI ."..I 2i :!ii - ;!i :ti) + II) 7ll - on:', - I) js - ;ii) 9 \\i l."l .VI ."1 -.'» I'.l >i t: Mi )> .'.S III 7.1 1.1 Js Hi Mi II .'.J :is _'l ll.t ( 10 JT - omi js 29 3 \.l \\t :ii M) :iri :n _>.i Vl u ■JS tl (i.'i .III h.'i .1-' 70 :ni IHI u I'll) :i'.i II.' -:!;i 111 :i7 7'.i II 7.". I) IHI (I JS I.I III 2.S.4 \.| .17 '.HI i:i It) Hi 111 :i7 Hil ■Jil ii. Ill IJ '.I ;i7 not II JS \.l :):i Il.'l i:i ii'i III s7 :iii mi .Is ~ I IJ "" il.'l ;ij -:iJ 11! \\i 31 t ~ :ij-:i:i i s . .-17 + II (i.-> - JS j:! y l.lliS w I 111 ."I u 71 :;.'i 'I' I :,> :il ■J\i IKl ill III ii:i Jl - Ill 7il f s IJ + IMJ - II Js liJ 5 1. 17)1 \.| Ul 11 'IJ '.J 111 11 t.l Id 77 -|S si 11 71 " 111 .Vl ( 7 71 - II 117 - JS ;i'j ■ 1 nititii (.1 nil >i'i ( ii((i> ts -Ml IS .-,1 .)!l SI i - .M Stl Jl 1.-, i 1 1 L's ; In Ml i t.v.';t ir.j IIP s.-. .'ill .lit -.111 Sll 1 -.17 -27 :t.l iMl 1 .ill sii ; ■l.vil M,:, 17 :,'.! 1 111 ,l'i 1 IS lis i IS IM) .'■-' li'i ; 111 i;i i 17 .-.2 I lll.> -'(Kl :iJ r..' 1 •-".' HH I Itdl (HJ .'Ii 111 ; l.i'.l.-i «»H IS s„! ! J:i :t7 1 1 -fJS'.l S7-' 1 I ;is .17 J -:ii '.'I 1 - Id >\2 ' 1 ■UJS lOH - »s ;io 1 4 1 -Jil ss 1 -.11 IM) i Wi'inl"'''! iiit'.in - l^ r,\ - 11 IM) - Ill .-.-. - t.'> 41 - lilMIJ - js .",:t - ■.'.■. IS v. ) 7 :i'.l t 7ll.-> 1 Ii :t.' t .■) ■ 7."i 1- .-.17 i 1 77 t .1 :tr. V, - IS - ()-02 + 1) (K) - Oil - (1 IC) 11 f I) OJ Ciirv. - JH - O'iH - (I-'JS - 0-2.S - I'S - 1) .'S - 0-2H Itiulhil VcliMiiy - 4 1 IJ - :is I - :ii r, - 40 1) - i-)i! - H 2 - J'2 4 63516— 2J 158 I'llil.lCAI'IONS (Pl ■IIIK IK>.\!1NI(»N I IMSKKVATOKV MKASIKKS OK HJ 0- (VCM - Cm/ic^,,/ X t._'7.') ii:!(Mi ti:{(Mi i.;i.-).-| ti;iii2 ti3i;s (13.84 V.l 1 1 \Vt \ol. -lOSl \Vl 1 V.'l. \Vi. 1 V.-K W 1 V.-l. \Vl Vc-l. \Vl V.-l. \Vt. i.">7is(tt; -:!N-4;i \ - 2'.t • .">4 1 2 1 -:i:i-52 ! J -21) :jt) I -i,-)-3r. , -17-01 i 4."iP,l t>4ii -lis. 74 1 i -:i7ti7 ' 4 -27 OH \ -:i4 (il 1 -14-48 * •2(1-9(1 1 4 - 3-11 4 l."r_':ilt.VJ -44().". i i -:i-2 40 '. -:il-29 1 3 V27 Ol -2r-;i7 1 4 -31-29 i i.'io, sCi') -lli..').S 4 -24-4(1 1 ■J -23-58 I 4 411.') JOO -.■)l)(i() , ! , , -;i4-i7 4 -31 ;!S I 3 -i(;-,80 4 -15-97 I 4 104 Of.' -24-06 « i:i'.l."> 4iu -40 111 « -■j;! •-'■) 1 4 -14 :u 1 -2,s-:)3 1 4 -38-2') » 4 -19-27 4 4;i:ii r>74 -.")(■> 11 4 I i -44-OS -44 t;;! ■J 1 2 -:iOS() I I -Hi -07 -1.-. 42 1 i -2S-H0 -3!l-7.-) 1 4 1 4:uoT(i:i -43 ■1)2 2 -28-31 5 4;iJ<') ■ ovti -24-S;io 1 -11-1(1 1 -33-21 1 -29 (18 1 -22-8-t 4.'14 -:i<)ii;i ', -:!,s-:i7 1 -27-94 1 -25-98 ] -17 (»7 4-JV.» ■ ^72 — 'M\ ■ t)4 1 -31-87 * - 30 - 40 1 -28-()2 4-.'71 SSS -■)0 2'2 I 4 -34-51) -28-05 -20 70 I ■i 1 4'J !■>•'..;)») -39-40 1 -27-92 1 -31 91 1 4i:)i li."):! -1.5-91 ' -20-08 4 Wi'ighU'il iiiOiin - 411S - 40 94 - .■i2-9r> - :i()-r)9 - 29-32 - 29-18 - 23-58 V. + 1-44 - 0-70 - 91 - 4-51 - 4 - 7t) - 5 15 - 5 - 50 V, - 010 + 0(K) + 94 - 0-11 - 12 - 0-03 - O-OO Curv. - 0-2S - 28 - 0-2S - 0-2S - 0-28 - 0-28 - 0-28 lladiul Vflm'ity - 40 1 - 41-9 - 34-1 - 41-5 - 34-5 - 34(5 - 29-5 (HdUT OF TlIK SrE(TlH)«()I'U' HINAUV 32 9UVC!N1 159 MKASrUKS OK ■.i2 e'VW.S I— Contuni,, I X 0415 0425 6438 6453 6503 6511 65 U Vol. \VI Vol. \Vt Vol. \Vt Vol. \Vl V.-l. \Vl Vol. \Vt Vcl. W.. 4571 -SOfi 45('.)-t)4t") 4501-805 4415-200 -20-10 -22-10 -25-35 -20-08 -20-53 \ I 4 1 1 t -15-49 - 7-08 -12 20 -17-09 -22-41 1 4 1 4 1 4 I 4 -16-55 -22-58 -39-50 -20-61 -36 23 -27-35 -■10-50 -27-18 5 4 J 4 1 4 i 1 4 1 -11 64 -17-22 - 8-00 -17-74 I 1 4 5 1 4 -25-83 -21-02 -28-38 -21-08 4 4 1 -19-20 -29-64 -23-07 -16-92 -15-91 -H-53 -33-12 -15 13 -34 10 -28-91 -19-85 i \ 4 1 J i \ 4 I 1 I 4 1 -32 19 -21-05 4 4404-042 -20-75 ! -15-79 J 4305-401 -20-31 -23-28 -15-22 -24-51 J t 4 i 1 4 -29- 11 -29 t)0 -14 01 -30-45 -15-76 -24-40 1 i 1 i 5 4351 -074 4340 - 705 4320 - 070 -33-26 1 -22 00 -21-t)3 -22 50 1 I « -19-86 -23-63 -21-62 -26-09 - 9-56 4314-891 4204 514 4289-872 -30-01 -25-<»8 -35-23 -20-78 -32 70 \ 4 i -29-46 -21-03 -21-58 5 I i 1 4271-888 -20-85 -19-(H -12-85 i i I 4 421 5 -iX Hi -13-12 -27 69 1 4 1 4 -17-10 -24-17 5 J -34-10 1 4 -16 49 i 4101-053 WVighlOfi moan V, Curv. - 28-59 - fi-54 - Oil - 0-28 - 19- 19 - 7-29 - 0-08 - 0-28 - 26-39 - 7-83 - 0-08 - 0-28 - 16-76 - 8-35 - 0-03 - 0-28 - 23-50 - 10 30 - on - 0-28 - 20-62 - 11-25 - 0-11 - 0-28 - 21-16 - 12-38 - 0-16 - 0-28 Ilailial Velocity - 35-5 - 26-8 - 34-6 - 25-4 - 34 3 - 32 3 - 34 160 niU.KATIONS Ol Tin: UO.MIMON l)liSi;U\ ATOHV .Mi:ASriii;S ok '.Vle^ (.'W.^l—Cmitlnucl 4.-i.l'.Mit(i •4.'>J3(I.V2 4.')(ll StM 4 11.')- -'00 4iii« (ir.' 4:!'.1.">-401 4:?.',iri74 4:i40 70.') 4:i'Jti-07i) 43 14 Mil 4'2'.I4")14 •',2n0 ■ S72 4271 SS^* 4215 (tor, 4r2S10s 1101 or.:i Wriphtci! IllfiUl V, t 'urv. Hailiiil Vflditv i;r,i\n \v\. \Vl 20 ■ so 2."p 40 20- 70 ■l'.l-02 ■ 3-2S 23 ■ SO ■21 12 (m70 Vrl. \Vl ; 1 70 ■SI - 2 1 ■ SO 10 20 00 22-23 • 4' 17 17 44 -20 11 -11-2.-) 0012 V(l. \Vl -22 00 -32 15 j -1(1 -77 -2S-03 14 27 -21 04 -37 33 -2:t' 10 21 00 - :, ' ,">(') -21 00 -25 21 13 07 0!0 2S 35-7 - i:.-3:, - 13 00 - 21 - 2s - 25-70 - 12 IS - 010 - 2S 2S S - 3S.4 0711 \.-l. \Vt 2S-n2 -17-S5 31-01 2S13 -30 07 -15 74 i .10-34 -2S-23 -13-10 20 -or, 7 - OS 0-23 0-2S - 34-3 (■,S33 V<1 ; \Vt. -2S-20 -53-20 -35-20 -2S-02 -31-02 -27-74 -24-21 -35-12 -35-51 -41-83 -33 00 0020 v.-i, ; \vi 0052 VpI. \Vt. -23 10 -27-41 ss 34 -34-10 -25-70 -3417 -21-t',0 I -32-40 I -37-05 -23-3S i -10- -13- - 0- -11 - s- -20 -23 21 7S 54 53 04 74 00 - 33 -7S + 2 -OS + O-'O - 0-2S 30-0 -20-30 -10 21 -2S 14 -20-12 SO 45 34 - 2S-10 + 10-50 + 0-15 - 0-2S 17 7 9-01 - 10-ti2 + 11-30 + 0-10 - 0-28 + 0-5 ouiUT or Tin: si'Kcruoscoi'K' hinakv ■.i-e-cw.si 161 4:i7is(ir, 4.")ll>0t() 4:r.';! on-i 4.j(iiM)r) 441.') -JOt) 4104(11J 4;!.")i r,7i 4;UO-70') 4:vjri.(i7ii 4:ii4Mii 4i;i4 oM 4'2X'.t S72 4J7 1 SSS 4'.'i:.|.iiHi 4101 i;:.:! \V(MKhl(>il iiic'.m V, \., Ciirv. llmlial Velocity MKASflUIS OF ."iS «» C'YGNI— TonHnt/frf (i'.Mi;! Vcl : \Vl \ (1. Wl -17- -;ii- -.■i7 4:i :!:t -:!1 - 4',1 -:24 -:i4 -;u ISO m (14 41 :is <.»l 21 • r)8 ■:!ll."i -:iiis.> •21 •().') -47-72 -30 11(i -4.'i •(•>.") -;i7-:i(i -;io;ii -issi li'tSS Vcl. , Wt - 32 IVI -f 12 ^(i + OK) - n 2S - 20 I ; - :i4 4t) + 12 4:5 + oil - 0-2S 22 • 4 21 ."lO 11 S7 14 '.».■) lo 74 2.") 2S 2.". 41) 21 01 27 (12 34 •14 33-30 -24 (it) 70(Mi Vcl. Wt 701--I Vcl. Wt IS 27 10 SI 24 .■)0 30 r>4 21 01 17 71 Ki 40 \ -22-02 i -23-2!) - ■)-2H \ -10-72 2 - 22 2!) - -1-S3 J -32-5S « -41-01 'J -21-00 20 3S-02 7(M)1 V.l. Wt 70S4 V,-l. \ Wt. 2S 20 - 23-23 -f 12-00 •f 0-12 - 0-2S 10-S — 22-73 + 12-7(1 + o-o.-> - 0-2S - 10-2 -23- 12 -3ti ()0 - 23-07 + !2-(iS •f o-o.-> - 0-2S 11- 23 •17 -23 43 i 02 ...3 (10 11 -10 20 03 03 02 ■07 ■ 22 21 -07 -3S-SS 10- -23-(H) -14 34 - 23-41 + l\ r,i + 0-03 - 0-2S 12-1 - 11 32 -i- <)-6)i -I- 010 - 28 1-8 \t\2 n r.i.K \'ri(i\s m ■rm; ikiminkin (insi;uv\'i(iin Mi:\sriMs (ir ;!.•»- cvfiM c.i.u,,'!,,! X 711! Ill 7111--' 71111 7l."i 71 I'l 71lM 71S7 \\\. \\i 1 \ . 1 n I \rl \\i V.l \Vt \(1. \Vt 1 v.l, Wt Vil. 1 \V|. 1 r.7 1 ^'it! : ■-• ."il ir. III'. -:;:; 'X, 1 :il HI ; - il 17 1 - (i:i ; -ir.oi i r,pi i.i!i !.' :;',! I'l ^j ; ■ :; 1.' 1, -■-'1. l^ 1, - 7i:{ t J -11 72 ; J 1. ">_'.; ii."i_' - I'l 'i:. 'S> --• 1 1:1 1.17 - S.711 1 - o.s.-, 1 ■ f22-2l I. 4 1 .",1 1 1 . M ;."i -17 i;i -'7 7."i ', 1> 11^ ; -11 iJ-> -10 ;!i 1 , J .-,s 1 5 -f- IHl 1 ni."i -'III! - K, r,s .'.", 11 - 7 111 1. - || r.i; H OO.-i i : Hi ; + 9-n ! 1 nm 111.' ■Jl 17 -.;_' ii^i ', 17 :;.' i _. ' ■» '.Hi -IS. 'Jii 1 1 -m-4t) 1 ; t:;.-,i '.Ti -_'l '.iJ — '.V2 • .'I'N \ - :i'.i •>■) _ -:ii)',tti i ■ ):; ;ii Tii'i - '7 7it -ji; 111. IS Hi '. r 11 til.' -t- i:ii ! l.;ll s''! •1 IJ - - 'j! 1 ■ '^-' ■J7 '•'>■', ', - 2ii li.'i t- 0-70 -11 21 i + -loi ! i IJ'il .Ml i:, 11 Jii M 1, ■Jii ,VI -11 Hi - 210 i 'i (jsn s7J ■ I'l Jii - .N ;>ii 1 -is lis 1 1 IJl" '.iiir, - 17 'M - 27 ^2 \ 1 -Is liit -not 1 - 5-.SS 1 i WrlKhtr-l 111! :i;i — I1M17 - -.'."i 71 - lS.:is - 17 -90 - 5-72 J + 11-38 \ 5-2() + 8. 13 + 19-06 + 4 03 + 7-47 - 4-48 - (1-35 + 311 + 2-29 - 97 . , , • - 3-02 + 3-29 + 5-70 - (i-79 + (i-29 + 0-14 + 2-7(1 + (l-2(> + 11-06 + 9-02 - 2-32 + 3-42 \ \ « I 4 i I 4 t 4 I \ 1 I 1 i 1 3 \ + 361 + 13 22 + 5 .58 -15 12 + 5-45 - 0-5(1 + 4-38 + 2- 15 + 9-57 + 82(1 + 7(H) + 14 -2(1 i i i I 1 + 3-54 J 4523 052 4501-8115 4415-2(KI 41{)1042 4351 (171 1 1 . . + 11-94 1 + 12- 13 ! i 1 . + 2 (14 5 + loi 5 1 1 ■ - (1-88 '■ \ + 4-48 : i - 1 21 1 i 1 . , -IS -50 ' i + 5-(l(i i - 4-78 1 5 - 9-55 i + 11-19 4 5-52 4 1810 - (ill + 10 (18 + 14-22 + 5-82 + 9-12 + 7-r,8 + 18-18 4340-705 -10-8(1 1 -1-88 i + 18.22 1 + 10-93 i - 3 11 1 1 ! j 4314 891 4294-514 + 2 (1(1 I 4 4->89-872 4215 -IHMl + 12-22 1 i Weigh It'll mt'iin V, V,, C'lirv. + 8-55 - 3-88 - Oil - 0-28 - f.-79 - 4-08 - 0-02 - 0-28 + 4-90 - 5 - 73 - 09 - 0-2S + 2-83 - 9 • (12 + 0-05 - 0-28 + 2-(i(i - 9-45 - OOl - ■ 28 + 7 09 - 12 47 - 12 - 28 + 9-78 - 11 44 - 05 - ()-2S Haili:tl Vflorily + 4- 3 - 11 o - 1 o — t - — 7- 1 - 5- s — 2- 164 I'l lU.H ATliiNS (P| llli; DOMINItiN (IHSI.UN All >1!\ Mi;\si ui;s (i| :!■_'» cvcM r,,,,/,,-.,../ A" I ■ S'.Ml ■trii'iiit!', i.7.';i(i.vj t.")l)l Sli.") ■111:1 ■.'11(1 itiii iiij ■i:',ii(-7(t.") t:ui v.u rj'.M'.'iit IJS'.I ■ NT.' iji,'>',«)ii W X.i ( 'urv. H;i(li:i! Vl'loiitV 7:1:1 \V1 \\i 1 -IS .•ii Tt'i 7(1 Oil •S.') V.l \Vi + 7 IS - I! 'M - I) (It - L'S t 7 i-.s I ■^■ji >.i ; + t-7:i ; + -' 1 ■'■-' i - s Ml ; " 1 IS ; r:i."i (1- ' I s,s + 11 OS ^ : .' .'i7 - (» is - (I -js Vil. \\i 1 1 10 7 -S f 7 .Ml ^ S.1,J r '.114 -IJ .M t- :i-.ss i 10 11 7rji Vrl. \\l I- 2 7.1 - 1-' '.11 - n-io - o-'js 111- . 1; Hi 1- (i so + l."i 0'-' • 7 '.III .'7 ■J II i:i '.IS - .". :S7 111 is 7i:n \VI, ; \Vi 11 4S - 70s II !»l - :M0 •||s :!.' i:mis II 11 (l-JS - -11 - ' 00 f (1 72 + ■ ) ."ill ~ '.III 4- ;m7 - I'J-SS - II- IJ - 0-JS 10-1 \V1. \Vi m .-is 11 i.'i ~ 7 I'.i - 1.' .ss IJ .')7 1 iJ n.-.l Vrl. \Vl J ■ < .) IJ ■■.".! 1 1 n JS - ino +- 4-:fi) J + 1'.1-S0 j J + 7-r..i i 5 -f 11 -.Vi i i + 1(11 j 1 - 7 ■ 2'J I J r.'-.vi ! i + 2 04 . j -f2.S0 i 1 - 11 42 - Hi - (I-2S 6 4 (iHiiii (II iiii: >ri.( THoscorK iii\.\i!V .i.M-f \';ni I'i". Mi;Asri!r,s or it'jwc-.cM r■„^^-,r(,./ \ 7 l.'i.". 7174 71SS \.|. \\1 Vrl, \\l Vil. \Vi 4.-|7!V.»l + 20 -Hi i + 11S7 + 2- IS 4.')4'.M)l;i 4riOi Ml.") + 14 2.-. 1 - 4 Ik. t- s :ii 4ii:i-20(i r21 SO ;, -r '.• Ii:i -10 22 4104 1-.' + 11 20 ; 1 - 1 .')ii 43.-1 lf.74 + :io:} 1 ; + 2 00 - (1 44 ■ i 4:U() 70.". +:ioo.-. i 5 + 11 '.Mi - i:! 20 i 1 4;uis'.u + NCi'.i 1 ; + '.1(12 + ti 70 -; 4-MU .■.11 + 14 27 42S'.IS7'.* tll71 1 1- 1 :io 427 1 ■ SSS ■♦11 111 : 5 421. ■>■'.>()»■. + 10 14 i i 12 72 Weight nl inoiiii + 1.-. yi + s- '.•S + 2o:! V, - 10 44 - '.1- .'l.-. - 7o:i V, - 10 - 20 - 21 < 'urv. - 0-2S - 2s - !)-2S Hiiiliii' Vcliirily + •■> - 1 — 4 ti r i',i2 Vcl \Vi - :! 21 + ',» .".7 + ti .-.4 1- .s-.li + 2:i2 - 4-7S - 24 - 2S - :!0 \il u t -12 41 - 10 tiii + 2)1 - 20 + r,.2s - 1 21 - t 2S - 2 71 - 72 - li 7'.» i Mis - 4-20 + tiOO + 10 - ■ 2S + 1- \ .1 , W I :; :io ; - 4 '.1.-. i + 4'.i.-. ; -10 12 4ii ; - I'.l 12 o;! ; 11 2.-. (.2 i -t- .1 ^ s 20 :>'.' 1 - i:! 14 .-Q ; 10 I 10 :i2 ' 1 - i:i -2".t'.>ti - l.'.Ol + 1117 + 12 - 0-2S - 4() 7ii.il I \i4 \Vl. I 21 )S1 )..V,» I 0:i :is i!t:i V .Ml ! 11 )-SS ) ■ s,-> i i:i - ti '.I'.l + 12 2.^^ + 014 - I) 2H + ^l 166 I'l UUlATln.N.s oi TllK u<>MlNli>N ()|tSl;i{\ ATI )UV MKASIUKS Ol' ■.V2l)'('\('-S\ -C'oiliniinl X 7<'.c.:i 7C>7'.l 7(i'.lli 7701 i Vrl. ■ \Vt 7712 77l!» 77:w) V.I ' \Vi \M. \Vi V(l. \Vt Vil. \Vl Vcl, \Vi V.I. Ut. -l.-wl V>l'. t Jl i t :i 7c. \ t^ 2 :i() -lo:!l i -21 :i(; -.,..•.■, 1 4 -I'.l IS trii'.inii'i -11 1(7 1 - (1 ss 1 t-lll 2(> - IStiS 1 J -2!)-<»S 4- 1 :!4 4 - W M ».■!.':{ o.'ij t I (u ; - 2 IK) S +- 1 Hit + (■s2 ; - 4 1)9 - !l '.•") 1 - 7 12 l.'iOl Slio - .'i ■.'() i - S(H> i -i;i 47 - ;! :is ! J -:i4-44 — ■' 7') 1 -114(1 ttli'JIHI - •.•■•J7 ' J + 2. is! i 4- :u i -IK ;{4 -!2 ()2 i -10 (Wt 41(11(112 -17:« I + 7S1 1 i -12 2r, i - .-)-7(l -I(i-!I7 4 4:t:il 1171 -17(12 i -12 :!() l:il()-7(l.'i -.'t :!(! ! - 4 ti(i S ~ i;t22 ; - (i (HI i - 4-H<» -i:( (U) i -12 .14 4:tll S'tl -1C.-40 { - 4 !I2 i -11 12 ; - 12-01 i 5 + 1S 20 ', - 5-72 i -14.7(i 4_'!n Till + (1-44 1 - 4(1 1 -2ii-.>i ; -i:! i:. -10 (12 1 4 -:il()S } 4'JH',IS72 -11 (IS '■ \ tJl.">H(«'i - <'>2S ^ i + i:i-oi - :!(> I WciRlitoil nicaii - sso - -.•:!(• - 2:i() - (1 (it - (t S4 - 10 .">() - 12 ^S V, + 12 «() t- !2 4',t + ll'l:i + 10 -S2 + ost + S-!)4 -f 7-(>7 V^ + n-10 + IS + OK) -f no.-) - •()'.» - tt-m + 007 Curv. - 2S - 0-2S - ()-2S - 0-2S - ■ 2S - 0-2S - ()-2S Ka.lial Vrlority 4- 3!1 t- 71) + 01 4- 0-!) - 0-4 - 2 - .5-3 oiiHiT oi' Tin: si'KCTiioscoi'ic hinakv :!.•»' cvciM 167 MKASITII'.S ol' ;{2»>CV(;M r„iitiiu4iil 7740 77C.;i TTsl TMM) 7H12 7S21 TMa X Vcl. : \\t 1 1 V.l. 1 \Vl Vil, \Vt V.l. \Vl Vi-1. \Vt V.'l. Wt V.-l Wt. 4571 WHl -15 30 i + 7-40 S -14 50 1 - -'-74 ] J - W) + 5-00 1 4 - 37 4r)l<) ti4l> - «47 - 5 5S J + 15 97 + 10-09 t 4 -17 30 4r)i:{ (tM ^Ml Hf>r> 44ir) .!(X) 4 • 50 + 1 34 + 53 -(- 1-2S 1 1 -11 82 i i + 8 Ol - 97 1 + 11-35 -13 73 - 8-59 + 44 + 9 54 1 4 + 010 t + 15 IW + 10 (H 4404 1)4-.' 4:i5I 074 -•J7-7() -14 92 + 1-22 i - r» ()■' + 9-71 - 8-35 - 2-97 -23 40 i - 9-20 -14 03 1 4 -10-19 4;i4{) 7a5 - 7»1 + H-W 4 - 5 23 i + 1-03 i + 4-23 - 7-48 4;n4 H'ji - 51 -IH H3 1 J - O-M) + 2 ()0 i t- 3-22 - 5<* 1 4 - 1 97 4-2'.l4 r(14 42Hyh72 421o DO) -20-29 -10 H4 + 10 20 1 i 1 - 03 * i 1 + 9-39 + 7-41 1 • - 79 1 WeightiHl i mean - 12-75 - 1-59 - 11 48 — 2-22 + 5-54 - \\H - 2 20 V. + 0-5S + 4 20 + 1-33 - 2- 10 - 5-45 — 1 oo - 800 \\ - 10 - 10 - 0-12 -f 0-04 ± ()-(KI -H OOJ - 0-02 Curv. - 0-28 - 0-28 - 0-28 - 0-28 - 0-28 - *2S - 0-28 Radial Velocity - C 6 + 2 3 1 -"^ 5 - 4 6 - 0-2 - 9 - 11 1 ic.s II HI II MK.NS iH Till, 1M)M1M"N u|l,M.li\ \1"H^ Ml.ASl 1U.> ul .!.■!' (MiM <"'■("■""' \ . Ciirv, ;v,i Vel. ' W t l.".7l V"i ' i\ .':; i.M'i i.ir, i:,j,i (P.'..' , 17 Oil i.'iiil Mi,') ) II lll.-> JIHI llnl iilJ iii:il lu 1 ■ 1 7s in 10 7(1.'. 111 (Hi i:ui s'.'l . ;t 11 r.",ii .Ml rjvt ^7J iji:, 'M)ii Viloiity (iKiii I I'M I liliX "li' IUNAli> .;jfilS(,\l IC'.l Ml, \>l Ills I'l .'..'(/■« \ ( .M Cil'itn.n'U l.-)7l K'.Mi .ir,4<.» I', Hi 4r)i)i Hti:. 411.^ '.ilMt I ID I tit J 4:i4() Tii:. 4:U4 H'.ll 4J>.I4 .')14 4'2H»TJ 421.1 '.« Hi s I s'.l \V1 Wl ;i7 .'.0 .i::>-2 [ -I.-, SI - ir. :ii j:i 11) ■ M ■• 1 ■J 1 '.IS - :ts ■ji'i si '.Hi \ il W 1 >:iii \ .1 W 1 :il 10 ;r> i.'i -Ml J J -27 liJ >J12 !■'» ■!li ill ■»■> ;iii '.l".l :i(i '.HI :tl ss -:ii ;i.') Wriitlil'-'l Iiir:in - ;!;i Tti W + 12 .■p4 \j + (1 (!.■> Curv. - (1 2S Kiidial VeJoeity 21-9 - ;iii i:! + 11 2H - I) (i:( - 1) Js - l II III II 2s \ , I W I 20 i:J \ i-m 1 II :ii 1 J is :i'i I 27 10 I i is 7.'. s 20 lis i IS r,.". \ 1.-. 71 i i hi '.III ii r.:i O 0.1 11 2S 11 7 170 ri iii.K A riuNs 1)1 nil. iximinihn (iii>i it\ \i<>I(^ MI.A>IHIS i>y .1J»MV(,M C.^ln.nnl \ S-'tJ H-.'IH .VJIll sJTii ^J7I ^-77 SJHI Vtl. \\i V.l \\l V.l. \\t V.l \\l \cl Wl \,1 Wl V.l \Vt. 4.'i71 V"l I'.t .il 1 -■.T. Wi i 1 - J'.i :iii t 10 .11 1 :il 12 1 4 - Hi JH i Jll H'.t 1 4.'il'i i>li> - :i .17 t -jr. i.:j I 1 -:t2 '.12 i - 2:1 :iH i ;i2 IH) 1 1 Jl 'tJ 1 i 12 DO 1 4:i.M 0-)J -J* ;r.' ! -JO H.', i ■2H 4J i -jr. 12 ! 1 -:i2 M I 1 - li) 1.0 - 7 in 1 i 4.v»i H(ir, - 4 1 : 1 -:»; !»H ; j - 22 '.17 1 - 22 '.t 4 i -MM \ -21'. HI. -21 S4 1 441.'. JIM 1 17 o."> « -j>.i ti 1 4 -21 :.ti 1 IS .v.» i - i;i iM) - iii):t ' 1 4ll»4 04J -2:t .vs 1 -Hi 1.^. -21 r.s i 4;t4i) to:. -J7 IH 1 -Hi \'> t -1!) 41 ! 1 -11 'IH J -27 ly 1 J -211 111 - 17 :iH 1 4;ilt V.M -1,"> H'.t I 1 - I'l 7S h - 17 ',17 i i 21 10 1 1 -:i2 (M) 1 • -IHIO 5 -21 74 1 4«.u :>ii 24 12 1 -IS !tl 4JH<,t S7.> ' -22 •.»•.) 1 -21 r.u 1 4J1.'> '.HHl 1 1 -22 11 Wcinlii.-.! iiifiiri - Jl liH - 24 IIS - 24 I'll! - HI 2.'. - .'U 4.1 - 20 :i2 - i'.»-.-.o V. t r. .'■.0 + 4 .V. f :t OS f H2 + 07 - 2 OH - ;i r,7 Vj - !)'.» - () 10 - OP. - o;i - 17 - 12 - 10 (iirv - -.'H - JH - U 2t, - 2H - 2S - 2H - 28 Ka
  • il Velocity - lli-5 - 20 2 - 22 - 19 2 - 32 8 - 22 8 - 2;i 4 dHHII n| I III, sl'l.i ri{i>s< (UK niNMM I.' «■( N(.\l 171 Ml'vsini:s OF .i2ii'rvr,\t r,„„f,ui„i a ■ ,\ :,."> 0,1 -21 .VJ ' 1 -2S so i 411.'. •-'mi -\:\ r,'.k i - !l (Hi J -t7 I.'. -:u o:. I -2:1 O.'i 1 4401 lltJ 2') ».'> 1 t -l,V20 « -as -32 -;o ."is i 2:i 7ii 1 Ciin 71):. -11 2(1 1 -21) HH ! - :t7 r,n -.V) (12 1 i -:il :,s ; 1 4:tii vti -•in.-,, 1 -22 :i(i J Jli 2.') i 2.". I."i i :is (K) i 4J1I4 :.ii IS is 1 1 -:iii 10 S 2s 00 4 4JS'.I H7J 2:. IH 1 1 21 12 i 4J7I >>>vS 20 7s 4 1 4.>i:. '.HHi 1 1 1 .V.I i ; WiMRhli'.! itit .111 - Hi ();i - 17 00 - :i.i 2ti :ii SI - 21; ■">- \ , - :. (H) - (i 07 - 10 (i7 - 12 07 - ID r. ^ , - 04 - ()0 - (Ml - 11 - it'i Curv - 2H - 2S - 2S - 2S - JS - Hailiiil VcldlitV - 21 4 - 21 3 - 4.{ 3 - 4.-, 2 — ii( ■ I 172 n Hi-KATioNs «)i- Tin; IKjMINION OHSKHVATORY The platos were grouped into twolve uoriiiiil places found in Table \ TAHI.K V Nn. Juli.Hii D.'iv 1. 2. 3. 4. 5. 6 7 8 9 10 11 12 , 120 ,121 2,210. 2.421, 510 r,v.i ■ 495 ■ IV2'.1 7 Hi SOI SH2 007 a7t) \m 272 44:i S,-i5 (i5S 17S .55 212 rii! 7!)5' ,Sti7 •Mi t 10!»<) Hi IIMI 1H2 :i07 ;i7ii 4(iti ii:)5 742 Velorilv Woinht 708 OIS 78S 20'.) 2:i7 ',•17 lill 108 .5(12 274 •711 •,S22 -30 1 -35 4 -33 6 -13 1 - 7 H - 5 9 - 1 4 1- 3 7 - 3 4 -10 1 -14 9 -20 1 Ucsidiial -IR +f)-2 -2 1 +0-8 + 1-3 ±00 -2 1 -1-9 -1-7 +4-5 + 15 4-1-6 A curve runuing througli the normal places has some similarity to that which would be given hy the blending of the lines of the primary star by those of a secoiulary star, but the deviation from the elliptic form takes place unsymmetrically in such a way as to bo liardly thus accoimtable. .\No. there seems to be no widening of the lino.s at any place in the orbit and it seems as though the irregularities in the curve are due to actual variations in the motion of the light-giving boely. It was therefore attempted to run an elliptical curve, as closely as ])ossible, through the normal places and apply a secondary correction to this by introducing a circular curve of one-third the period. A least-squa ?s solution was carried through, which resulted in slight corrections to the elements and a reduction of the value of ^^pvr from 7.') to 60. The preliminarv and final values of the elements are given below. Probable errors were computed and are appended to the final values. V.lvnu'ut I'rcliiiuiiiiry Filial p 1170 (lavs 1170iiiivs e 0-2 280° 182 +0 053 2Sl'-05 ±4°-.'. X 16 km 2.42(t.700'25,J.I) -14-iikm 6 km 2,420,515 J.D I(i<14km. ±0-93 km. T 7 2,420 700'39 J.B. ±18-7 (i. -14 -35 km. i.0 65km. 5SI) km. +0-90 km. T,. 2,420,515-821 J.D. ±12-4 d. 2n3.2.'i().0(K) km. nil' sin' i 0-5.'< O .'m. i m)' 3 T33M QOOblSai T OUBIT Ol' THE Sl'WTKOSCOlMC lUNAHV ^2 6' CW.Sl 173 To explain the curves one woukl have to cons-ler the system us consisting of a light-giving body revolving about another body in a circular orbit in 31)0 days and these two about a third in an elliptic orl)it in 117U days dig. 2). F,g 2 In fig. 1 the single circles represent the Ottawa normal jjlaces, the double circles Kustner's observations, and the triple circles the Lick observations. Dominion Ob.scrvatory Ottawa February, 1918. 1 5 JUil, .^39 /^t-* 174 I'lULKATloNS OK THE DOMINION' OHSKKVAIORV + 10 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 Fifl 1— Radial Velocity Curvo of 32 9^ Cygni