CIHM ICMH Microfiche Collection de Series microfiches (Monographs) (monographies) Canadian Institute for Historical Microreproductions / Institut canadien de microreproductions historiques I Technical and Bibliographic Notes / Notes techniques et bibliographiques The Institute has attempted to obtain the best original copy available ;or filming. 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Les cartes, planches, tableaux, etc.. peuvent etre film6s A des taux de reduction diff^rents. Lorsque la document est trop grand pour etre reproduit en un seul cliche, il est film* ^ partir de I'angle supirieur gauche, de gauche d droite, et de haut en bas, en prenant le nombre dimagos nicessaire. Les diagrammes suivants illustrent la mdthode. 1 2 3 1 DEPARTMENT OF THE INTERIOR CANADA llf.N. \V. J. HocBK, Mimtltr. W. \V. Cobt, C.M.G., Depotf Minulfr. PUBLICATIONS OF THE Dominion Observatory OTTAWA -C^^^-^^''' W. F. Kino, C.M.G., LL.D., Dm. ^^**v-,^ ■/or. V^^v. Vol. 1, No. 14 Orbit of i3 Coronae Borealis J. R. CANNON, M. A. D) CAl MT i*03 ?C)1-IU OTTAWA GOVEBNMENT PRINTING BUREAD 1911 m\l POLYTECHNIOUE BIBLIOTHFOl'F ♦ DEPARTMENT OF THE INTERIOR CANADA Hon. \\ . I. liciMlf, Wi.,i,/,T. \V \\ t.'olir, CM C, /Jr;.urir Wmi.lfr PUBLICATIONS Dominion Observatory 1/ i OT1 AWA W. F. Kim;. CM.C . l.I. IV. I> r,;ln Vol. I, No. 14 Orbit of (3 Coronae Borealis i^ t^) BT J. i;. CANNON, M. A. 1 » T r A W .A ilOVliKNMENT PniNTINi. UlHEAl' 19! I .:i2l;t ((l;l;ri ni ,> coHoVT !',(ii;i;.\l. UV J. U. ( ANNON, M.A. Thi- -tar li:i> lin'ii uinlrr dh-cn :ii loii InTr .luniiv' ili" >rar.- KHO-l-'. It \\a^ 111-' aniKiiinrcd a- a liinarv Wv Mr Mumv in I. "I! W . \('i2. from finlii riira-iiiT~ 'j.\\'uiis. a r:uiy;c I'nmi Ul i" '■>'■'• km. Tlic nli-'T\aii')iis luTf .-liow a raiiur nf appioximatcly llic -amr nia'iiiii ndr. TIm' frrur- of nica-iirciucni \\r\r, lio\vr\cr, cnii^idcrcd -n lar'j:r that ii wa~ doiiliird wliciiicr any orhil (•diild \>r driciiiiinrd. Inr a liiiH iiiicnunctcr nicaMiics were • iiadc, 1)111 ilir iiiiccrtaintN ol' tlir w avi--li'iiL;i h^ of llic litttrr lines In! to tlir aliaiidoiiniciit of this inrtliod. A solar -laiidard wa- then u-cd in [nca-iiriii'j; a frw platfs on the Zci~s ( ■oiiiparaior, !)iit tlic line- in tlir -nn iiiid ill tlir star were so diflVivnt that the n-ult- wen" very unrdialilc. 1 iiialU. a wide >i)rclnini of the >tar it^i'lf wa- obtained and u-ed a- tiio >tandard in the nieasiireiiu'iit i>f all the plates and these measures were taken a- fairly reliable. 'l"he standard ii-ed wa^ plate nuiiii.er \'V.\H The veloeity nf the standard ua- ileterniined \>\ niieroineter leea-urenient and al>o li> inea-nriiiii on the /ri— Comparator against a solar -tandnrd. The mean. Isti km., ua- accepted a> the velocity of the plate. If this varie- to anv extent from the true value, it makes no ditlercnce to the form of till' orliit. Init onlx alter- the position of the-, line. One hiindreii and lifty three i>lates were taken ami mea-iired. hut even with lhi> larue nuinher of ohservai '(ins the results did not al unee promi-^e the lindint; of any period of o-ciH;Mioii. However, plottiniz; the observations eon.-ecutively >:iive an indication of a period of about forty days. When furth(-r work liad been done it was found that lO'.t days fitted the obi-ervations as a whole, perhaps, better than any other. This consecutive l)l()ttiiiK of observations further showed that the nuiMinuin in the various o.-eillations did not reach the same velocity, but varied to the extent of :<;<. I'l HI.K \lhiN- nt llIK nnMlsms DBHrHVATOKY. iitmiit \ ^ kill . ami -Imwrd :il.-n t|,;ii a citIiiiii miIiii- ni tlic inuMinimi was rrpiatnl i!i aliii.if !'.\!'!\f piikm!- :)V ('.Ml v .ln>- 'I'lii- <''''nH'.| fi. iiwii<-'ii<' a tlirrc IkmIv -y-iciM, the lioily \\ liiih nivo tlir >|ifclrniii nicasiiicd icvoUiii^ ittioiit aiidiliir ill to U (lays, iiml iIh' Ivvi> "itii a tliiid. roniiiiiic a pnioil ol prrturliation i\\ I'.Mi S days. A ^iiic (iii\r \\a- a--imi((l Iht t'n' luni; (iscil'aliiiii ami llii' \alui'> j;i\cii ii\ it ajiplicd to tlir \cli)citif> (il)taiiii'(l frmn tlif clilTrrrnt plalc-. In (ndiT In urt a ciirM' I'cr llif ^liort |)('rii)d and Id ii-f all lln' cili>iT\ aimn- in ilic ilctcrminal iim I'l' ihi- ciirNc, a^taIldurd nia\iniuiM ua- adoptid at His kni , and tin \ari(iii- piTinds icduccil to ihi> -tandard l)\ addini: oi- miIh fart iii^; a>- llir la-f niii;lit lnv 'I'Ilc ^inc (•nr\c mentioned alioM' \\a> taken with an amplitude ot' is km . it< iip- curve cfo-sin^ the zero lim' at .liilian Day J. UN. .SHI- I ami it- iiKiximiiin Ix'iiiK f"> - km., aii'l it- niinimum. 1 li km. The \arioii< values >;i\('ii hy thi> were reail olT and aildid to the velocity ^iveii liy each p'ate. 'I'iiis \'er\ tnueh iiiiproMil the stale of alTair.s and when the oliser\ alions were l)l()tted with the-e e(]rreei ion- the form of the ciirxc wa> elearlv seen, although if must lie admitted that -oine of the residuals were rallier lardc. 'I'he observations are >ii\('ii in 'I'alile I. \'. in cases wliere iwo plate.-, weri' taken on the same dav. i> the mean of tiie \elocities obtained lor the two. iiKHil or ji I'oKONilC BOKKALIH. TAUI.i; I. nli.-l l;\ \ilii.N» ut II COKoN.I. HOllEALUJ. riut. i 1 3221 3302 3303 SMI C c c H 1" (' 3414 / C: :U21 f ;i.">u.i ;i:.li 3839 /{ 40W \ IDJS : tlXi.'. 4076 40S4 'I 40BS / 4007 (127 lll'i U."A) , 4100 \ 4101 / 4166 \ 4167 I 4184 41«2 ] 4103 J 4199 4209 1 4210 I 4224 4243 ] 4244 J 4261 1 4262 J 4268 ' 4269 , 1' ( ' II C c c P' v< 1" I' c; c P' I" I' 1' H H P" P' V' 1' P 1' P' I" II II H P P C C I'.HII toll 'j:! lrh.-j:l . Miir. U Miir !• Aliril 11 .. \liril I-'... April J:. April ■j;., Muy 4. . .luiic 18.... .Imic2y.... ,Jiil\ li Auk. 2«.... Sept. 9 Sept. 9 . mil KrI), -27 IVl), ■J7..,. Mar. 6 ... Mar. 7 ... Mar. 8.... .Mur. 8 . . . M;ir. HI Mar. 11) .. Mar. 28 .. Mar. -."^ . . .\pril2. April 2 lApril ;i |.\pnl:i. April 10.. .\l.ril 11.. April 11.. M>ril 17 \pril 18. s .1 Jiilijtn P" I'hlUH' 14 4U 50 3fi 24 36 :» 24 40 38 39 30 35 30 fi3 49 61 76 46 63 29 30 35 35 :io :i2 25 30 30 35 35 .\pril 18 I 34 .\l.ril 20 Aprils,-!. April 23 . I.\prir25. ;April 2.5 April 26... '.\prir20. 31 30 40 50 30 30 UH,72'i 'J3 28-M - 24 6 740 Stf 1 60 . 1 - 22-8 TT3-80 3461 1 - 30-0 774-85 35-56 - 25-3 789-80 961 - 27-9 796n was - 29-6^ 84108 19-79 - 21 8 852 73 31-(>4 - 25-7 859-70 38 61 - 27-4 913-58 10-69 - 21 5 924-52 21-63 - 17-5 !1,0'.C) .^7 ■2'.i:is - 22 1 102-89 36-40 - ■22 •« 103 90 37-41 - 30 2 1(M s;! 38-:M - 25-8 imi ill in l.-i - 23 2 112 m .'. .'..") - 17 li 124- 1)0 17 -ll - 22-4 12i( 8'J ■'■2M - 20-5 1.(11 s4 137 110 138 St U4-7H U,-iS8 117- 79 l.".0-77 ;:i It) 30 .-.1 31 ■ !.■, 37-37 38 49 in to 2 48 152-83 I 4-54 I l,-)3-82 I 5-53 27 Oj 15 6 3 3-5 3 3 ;> 30 - 10 - 11 -23-9 -29-1 + 01 - 8-5 - 1-1 -281 - 8-7 11 -16-7+ 2 4 ti:5219 2\ :?7s ITllI.K' \ 1 |i>NS itt llli: l)o\n\lii\ i)|l-.|;ii\ \ |nl'\ . 1 ili>l.l!\ A 111 INS 111 ,i I'dl'.oN.K lie iKi: \1.1S— Coiidnuii/. Hiiite Dit, .lili:tii Hay I'll:,. V.-l i\ 1 Corn -fi inn \il. \Vt fi)r lir.l '.";, O-C 1«h1v * 4276 4-277 42<17 4'J9>( l:u:t ■014 4;.' 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Auk. 14. \iiK 14 4.'. ^7 :!() :iii .ill .•.» 17 114 :;(! 40 :iO :i:t .14 :iO ;iii :iO ;iO :tii :iii 4.', 4.". :iil 49 :i:i ill 111 3.'i :iil 2'.t .1(1 :il 3.-| :t.-| :to ;iO .i.'i 3."j 3.'i ' :12 I 4.-. i <•' j :iO ! 44 I.".-. 71 1112 Tii i7r>Mi 17^■M1 1S2()G 1 Mi 7li 1>7 70 1 N9 ■ 72 190 72 I'lT 114 201 72 Jils il:! 210 112 211 r..-, 210 111 217 .-.s ■:is 117 221 0;i 224 .-.9 230..-,« 232 02 2;io..-.7 23S..-)7 239 ■ 56 212 OK 203 .■).■! 7 l.'i 1 1 17 2.^ .■) 1 :iO..-ii ;i4 :i7 38-47 39-47 II .-.:) 1 .-1:1 s 4.-. 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OliH I - 21-5, 3 7 I 1 1 4 I..1 .-. . .-.(1 10.7 + 0-2 1-4 -12-5 + 8-1 1 :i -22-8 - 3-8 s IS 9 IT 3:i 40 1.-, 21 II 1 II 19 ;i I ;i -10. 3 + 2-5 12 -'22-2 - 3-4 1 J i.i 1 II II .1 N -20-4 + 3 4 mm 1 Kv d ( iiii'iNi: uuhkams. 379 OBSKI!\ \ II' iN^ III rf (iiU'iNl r.iMil MIS fuKluiiuJ. I'li.ti- IMi.' S Conci'Ilun ' .l„l,.-, Di.v I'hasc ,:'; Wt f"r:tr.l y,^ '■•-<.' .< '^' l.oilv 1 1912 4898 \' (■ M:.r l» 4890 J (■ Mm is t'lll r Mar 22 t'MJ 1' .Mur. 22 I'll'l 1'^ M;ir 2."i, I'lJII 1'^ .M:il 2,-> . ('r.'7 ( ' Mai 29 ),|_N (■ Miir 2'.l 4i);ii 1' Mar :)1 4932 ' 1' Mir :u 4>)37 (■ Aiinl :i 4938 1 (• April 3 497.0 1 11 A.pril U 4951 f 11 April 11 49r>0 - c April 12 l'.i',7 (■ \pnl 12 imil r April 111 4U«9 I'l April I'.i 4973 I' April 211 4974 ' !• April 211 49SO ^ (• April 2:1 4981 (• April 2:i 49H4 II \p,,l 2.-. 4985 ' n Aj.ril 2,-. 49S8 1' Ai.nl 27 4990 1' April 29 4991 ' I" April 29 49',>6 (' April 30 49117 (■ A|iril ;in .iCKH II Mav 2 rMY^ 11 Mav 2 5007 V Mav 3 5008 ' 1" Ma\ 3 SOU , 1" Ma\ 111 .5012 1 I" Mav 10 5016 11 Mav 11 5018 \ P' May 15. 5019 J pi May 15. 502.1 p Mav 23 .5027 H May 31 5028 ■ H-P 1 Mav 31 5032 P' .luiM' 5 5035 H .luiii' l> 5036 11 .Iiint' ti. 5041 ; HI 1 .luiii' 7 5042 ' P' .Iimr 7 3,-, 1 ll'l IMI Mi .'.•37 - iss 2-7 1 ■.-. + ; JO - -15-8 + .;.:i 3."i 4-.1 h2 9-33 - 30 8 2-7 T i - -27-8 - 90 25 1 35 3.". 4S7-S3 12 34 - 23 4 2-5 1 2 •+- .'•9 i- -20-5J- 1-4 33 ."lO (91 8.'. 10 36 - 20 6 17 3-2 :. + 2-8 - -17-8!+ 1-8 3.-. 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HI .■.72 7:i 10-44 - IC, '.' 2-ii r.tnij 11 •lime 21..,. IH .17.'. r.T 19-3H ^ IS !> ■ < .i(Hil ( ' .hint' 21. . . . (iN o7S«!» 1 22-3'.» 1 - I'l c. 2 (1 oOti'J ll-C June 2.*). . . - n r,7n-70 1 23-41 1 - 22 1 12 8071 ^ r June 2(1. :!ii .-.siMiO 24-31 - 21 .'. 1 II 5072 . .•|()Mi p Juii.'Jf,,, , .liih 2 II m .-,,sr..(>B j 30-37 - 21 f 1 7 .■,(l^7 ."(t'tl II li.K- ■' 10 1 II .lui'v ;; .".0 "iN'tj" 31-3.S - 20 ■_ ■J (i .'ll'l.' 1'. ,Iulv :i ;;s - - .'.Ill 1' .lulvlT.. :iii (1(11 .'iS 4-:!i.< - 11 2 2 .".11 -J r .lu'v 17. .. lid 12 .MJl II .Itilv 2:( .•).-. ! i;n7 ('. 1 liMJ 11 2 ( .".1-JJ 11 .l.ilv2:i 36 1 15 ('(irri-i'tion; fdriinl i hoilv ! Vel. (V) o-c + 0-9 -20 I - 1 1 + 0-8 -18-8 + 0-7 -t- 0-7 1-10-2+ 3-4 + 0-0 1-18-3+ 1-9 4. 0-0 1-19 0+ 1-8 + 0-5 -21 9 - 0-9 + 0-5 -21-0+ 0-2 + 0-3 ;-21-3 + 1-5 + 0-3 -19 9+ 3 2 - 1 -14-5 + 5-0 - 0-3 -It 4 - 15 •p. I'lj-tki'-i. H H.irper. I*' IVirki-r. ( Canm.n. OHHIT OK ^i COHON.K, HOHKAl.lN 3Sl MlASl lll.S 111 ,1 (OKON.V Hdlil'AI.J^ .(■<>m,.:ir:ilor M. :,~iir.-^, Slir Miiluliir.i CCid l;,.i.M.u HI \2 II ;f'2'-'i> V.'l. \\i ■a:-2\ I -vw- ■27 W \ ■2;t sr, ; 17 VI I i 9 -4;! n 5:) ■ OS is r>o :SN2 ithi.ka I IMS- .-ii 7« Haduil \i'|n,ilv ioi:i n ;>:! Id is 1,{1 \rl v. 1 ! \.l W lioS 1 .",r, :; lid 1 1 IJ is lid - Is lid Hi '.'I 17 '■ II \- Is l,d Id tid 1 1 ir: iil IM |- :;i IJ- IS S-l.s '.I ■ ss .;:,iij .>.-,! 1 \ , 1 W ! \ 1 \\i Hi -711 ; rjsii ; . IJ sii ; ij sii ;, 111 .".I 17 :;s Is 1,11 .. Id dd IS 1,:; ■jii is IMI ■J 7 4 OHBIT OK d CDU'lN.K BOKEALIS. ■.iisi liejiiim 1(1 U IJ i:t It i:. mean V. \4 Sliinii.'ini Itadiiil Wloritv MKASrUllS (il a COliiiN.V. HdUr.M.l!^— '-'"n'l"'"-''- (CoinparaKir M.:isurcs. Star St alidaril 4300). Vtl, \V: iOJS I HiVjn V,l. \Vt + Jl) 111) 17 :i:! I'.i :t',i 1 1 ■ 7.'> 13 ^i^, V.'l Wi + 14« i + 1'''71 I ■JJOJ 1 i l^ r^ 1 17 77 i:, i)s U :il + 16 61 - V.h.V2 - IS 60 + 17:i7 is Jl l.VSl ■I'i IS -60 It. I l.l + 16 i:! - i.-> SI ■JO - ISI'iO V.l. \Vt :;J 12 IsDl ■117 IS 60 KIJN !06.'i V.l, W ; 1 1 1.; ; Jll 12 1 2tM»'. I'.i 21 2*^ ■ 7-i 211 '.HI 2;! 17 - 21 til) + IS 01 + (17 - IS -60 Vil. \Vt V,.l, \Vt. 22 1 l.'i'OO 20 16 21 14 27 ():i 28 •77' 2S-86 2H17 2S .-,1 2SI»0 2 17.". - 17-65 i 27 -87 1 - :si 4:i 5 - 20 M + m ■-<<.> ■07 - 18-60 - 27 -'.I.") + l6^:ifi I 00 - 18 60 22 '.1 - ;io-2 ■AS\ IMltl.K AlldNS OK IIIK DciMIMUN (II1>KU\ Al ( )U\ . MF.ASl'RES OK ff CORON.f. ROUrAI.IS— + -07 - isiio Jlj '.' \,l, \\t 2;i-7ii l,"i is 2:jil'.i IS -72 21-32 22- 11 20 -Go 20-17 ir.-(>"i ■0 . 10 OS 11 - is 1,0 20 1 OHBir (IK ii I itUiiN.K ItiiUKAMS. ^^s-, Mi:.\srUKS nl d CuHiiNM, HhUIMIS -r,.ni,iiiiHt. ^L'oniparutiir Miusur.',-, Si:ir Si;iii.l:ir.l !:«0i. VclDrity (i;iJlM-:i: MSf) I'l HI.KMlONti OF THE Di).MlMl»N OBbEHV AT<)K\ . Ml \-rHi:S OF » COROX.-t; HoKI MlS-roH/miKd. (Comparalcir Miiisiirrs, Star Sliindard 4:130). KoRion IT'., ll'i'i IJii'i IJii-i- 12III 1221 4237 \rl Wl i 1 \il, Wl 1 V.l- Wl i Vil. Wl 1 \.l, \\t V,l U 1 5 s 't 111 11 12 \ - 17 Oti i S7:i 1 10 !Ki \ '.I'll 5 10 112 ;. S 111 \ i.i?.-, ; - 15IM1 ;. - 1207 ; 12 Ml ; '.1 2!> , '.115 ll;iil 1 12 ;!ii ; - l:i 2'.i \ - 17 or, \ 1 1 :„; 1 1 1 im : 1 1 1 1 ;. 12 III \ lit 51 J - 12-57 i - 7-.il S 12 M. 1 12-21 ! 12-OS 1 - 14-37 1 1 - 17 Ti' ; i:; 111 ;. 12 :;il \ 1.; \\\ , 11 II •. 7 :,i \ \\\.\ \ - 10 33 1, - 7-61 5 . . . } :• 2.-. 1 in 1!.' ; 2-l).s J - 13-78 • H '.14 I III 02 i 7 H» } 1 1 i:. 12-73 ; - H ■ 20 ;, s.:;ii • - 11 (11 1 Weiirhtp 1 ni(';in \ . \, Standard ~ 12 i"l ■ 1, 1.', 1 Ci - 1> 1,11 - 1 1 :.'. 1 II : III - Is t'.o - 14 15 + 3-73 - 15 - IS- CO 11 14 + 3-73 - -!5 IS 1,11 11 r.il + 3-73 -15 - |S.|',II - 2ii 7 - 7 :U + 3 -Oti 04 ~ Is. 1,11 - '1 .VI + 2-37 00 IS (Ml Radial \'c!f)oity - 215 - 2i'i II — -"'5 20 ■ 2 - 22 ■ '.» - 25 S '(."hf'ck mcasurfnu'nt. ilHUll Ui' li CUUUN.E ij<>iii;.\ias. ;i.s7 \!i;.\siiu;s (II rf (HKiiN.i Hdiir.Ai.ls— r,-i,(i-.-.../ (Compuratiir MruMiri-.", Sl:ir Stnndiinl \'.VM< Region IJl.i tJII iJiil l.'iij IJii'i l.'lis -IJ7il 1 i 1 1 \".l \\i \.| \\i S.-l \Vi V.'l ' \\< \.| \\i \.l \\t \. 1 U( 5 III j:t ■ 1 - 8-79: I 1 11 11 ', • 1 i.'.i ■ HI 70 ; I - 7 is J s 1. 17 ; ^■lu ; - I 17 ) M 1.-, ss ; 1.". :ij '. :. ','.; ', 12-86 ! • -|(, 1 :t «9 I - 71)0 i III ■1 'ii '.1 i:. '. 'I'll ' S (N 1 ■ 1 lil . r.-w S ^ •-' 10 ;. 1 1 ill III ' li Ti'r ; 10 ■•: ' 1.' h:i ', . :; rj ;. 1 s7 \ IJ ill III li :;i ; 7 :!1 11 01 ; - I', .-ii ; -' :>o ; 1 1 11 Mi '. i:. .,.i ' s OS 'i J'l '. ■J 1 1 1 '.i;i ; - 1 lil J 1.) U 01 i i - 11 01 ; 1 - 7 IKI i Ill 1.0 ; T ..liO ; Wniihlr.l ItliMM II :,.-, 11 11 S O.'i 11 HI - 71 - :i lii - ;i-92 V, ' J 1 IJ t 'J II-' • Mill 1 :;ii II '.i:. - '.I.", !- 2.H \ , mi IHI ■ i:i l.i IHI 11 01 St!il\il^iril IS 1,11 - Is lill - IS lio - Is. 1,0 1 ^ 1 ,1 1 Is 1,0 IS 1,0 K.l.lKll Viloiily - 2s-i - 2S0 - 2-)J - 28-5 - 10 'J - 11 :> 22 ■ 2 388 IM lii.K \llu\> nl iilK l)n\ll\iii\ (ilt,-.|-.l(\.\|iiK\ . MKASUHES OF C'OROX.t; B()KEAI.ia-C«,./i«i»,i. (tVinipBrator Mrasiu-e*, Star Stanilai.1 \v.',(\' Him..,, u:: (JS'l IJ'.Kt IJ^i7 r.",is 4.11.! l.ill Vtl. W t \ M \\ t Vol. \Vt Vel \V( - 1 :(1 i ■ -■ "I 1 • (1 .-,1 \ 1 III \ X sii ; + 0-74 i - :{-7 5 V.I \Vi \ . 1 W I 1 V.I \\t. 5 - S13 ; 1. (1, • 1 Is ; 1. l.'i : ii 7s 1 'I'l ; .; .'•. 1 ^ "1 ) : 131 J - ;!.'.ii ; ^ '.' (Ki ; • II sli 1 -' ij^i '. :; i:i ; ; 1 Nl ; - 1-Mi ; - 2-51 i ■ 1.; 7s \ II .".s ; .', .■.'! 1 1 .;i \ '.1 II.-. 1 7M ; .-.■ii'.i ; + .'■.■S4 i i ■ ' -':i ' *t lu M IJ 1 t l.'i + 1-68 - 2-37 r 4-68 - 1 -« +- 2.;ii + 117 1 i 4 4 i 1 til \ 7M); J -' "•>, \ .-. ii;"i' f w ) Weixhtod nipan V, Slali.lui.l - U-5'J r U-2,S 4 .(11 - Is i;i) '■ .•.•«7 — 1-77 ■d.' Is i;ii - .'Ii 1 r 1 -1 - 1 77 - IIJ - Is 1,11 II II.' - J 17 ll.'l - Is (ill II 111 - -'17 - 117 - IS lill l> '.HI Hi - Is (ill • :i 11 Ii '.III • Hi - is lill Viloiity - I'.i 1 - 20 S - 21 2 - ls.7 - 22-2 niilin ny ii I iilji .N K HciHi. \l.l>. 389 Ml A>l l!l> 111 .< (iilinN.l. \vi\A .\\.\> ConliHutd. iL'oiii|Nii ii.ir \l.;u(urcti, Star Stuudurd 4^1301. l.iH i.;i7 I.IJI 1 ijj 1 . ;i 1 ;,i.'. 4.t3y \.l. \\l \ .1 u t 1 \ . 1 W 1 1 \.l \\\ ( \ ■ 1 W ( ! \.l Wi 5 + 4a3 I 1 I 1 1-' i(. ; j 1 I 1 .".'1 ; li-40 i 8:fs i 1 s'. ;, 1. '17 1 1 (HI ; 1 I.I i 1 'II ; 1(1 iij 14 - is mi ■JJ s + 1 i 3-02J 5 1 ^ 1 '.7 1 11 III 11 \1 671 4 .il 11 l),j 1) ;i(i • silt 1 - 3-91 i - a it J - (1 :(1 J (1 711 ; t -' (ill ; - J-6U ) 5 03, \ y 69! J 52 i i; 7.1 1 1. Ill - Illiai.U\ AlUUV. MKASl'RES OF U COROX 1 in. id MlS—fonttntud. • Comparttor MrniiurM. Siar Sim. lani 4:t:iOV Hf-CHtTl 1 ;tii 1 :ri 1 :)>> 4;i.vi 4:i >. tw J 10 77 1 1 >;, ; II .11 IW ".IJ i Jl ss J 1 1 1 17 f. 7ti i 11 1"> 1 10 'JJ J 11 i« i 115 4:t i -■4 7.'. 1 1-' 'i 7( 1 » SO J 13011 ) It HI J 14-71 1 14 31 i 11 ., _.,, f .■.H,'. ( 10 S7 ) , , . .\. . . 10 ae ! 4- 1-' 7.4 1 l'.> 51 J i:. +- i'M 1 f '-, 71 1 1 + 898! ) ! + 12-841 ; - IJ 39 J Wci^hti-l IllffUl - .'. .')(• -^ 7 --11 r '1 71 ■ 111 7,7 1117 . 17 .-..; . .'1 41 \ , 10 :il - 10 sy - 10 M) - 11 is l:; IIS lit IIS 1 1 St \ , 1.-, ■09 ■10 - (I'l IHI IMI I'.i rJlKn.ianl - IS tK) - IS .-,11 - 1 s r.i 1 - - !\ i.ii Is 1,11 IsHd IS 1,(1 Madial Velocity - Zi-r, - Jl s I'l '1 - I't ;i 17 :, - 14 1 \: 2 c HI 111 I CPI .i IIMN 1, liiillC \l.l-- 391 Ml.\>l lU-S <>1 H (nlKiN 1 I'.i.HIM !>. -ConlinutJ. iCompiiriitor Mriiiiiriii, Sliir SIikkIhi'iI 4330). 4:t7(i i:iT,'. 4:)7ii 1.17' 1 ;sii l.is.l list 1 1 ) 1 V. 1 \\i V.l W 1 V. 1 U 1 V.l \\l \r\ \Vl \. 1 W ! \ . 1 W 1 I r, 1 + M« J 1 i + 24-93! 1 I I'.i lis i f 111 1(1 f -M -':, ; ♦ 1!1 IM { + 5-64 4 4 i 11 1.-, IIS 1 1:. 1111 ' 13 •-•! i 13 73 i 14h7 i It) IV4 5 14 H7 1 IJ i:. 7.' ; 1 1 :.i ; 1» 52 I I 20 22 1 13 01 i 1 1 1.") + i:i-7b J 13-',M ! + 17 51 ; 1 t It S'l 1 17 l'> • 1 .' .'i ,' ir. "s 1 ■ 111 I'll + 14-31 i i !*-7.'> ) Wpighlcil iiii'jiii ^ 111 Ts , II. ,",s . 1 1 .'w ■ 11''; . 1:. I.M . 17 '1.' r 11 7ll v.. MM l". 7 J 1". 7 J 1'. 11 |l. 11 - It) at) - lii 311 \j ■Jl 1 111 III III ii;. (f.i 11 St^.ri.liir.l - is 111! Is l.ll Is 1,11 Is l.ll Is 111) Is l.ll IS i;ii Harlial Velocity - 1(1 :i 17 s ■Jll 1 I'l s I'l 1 - 17 1 - 23-3 392 IT ULUAIIONS (II- 1111. DOMIMUS c iB-Lia \ 1 1 M: V. MEASrUKH Ol' a COUONi: HOKKM.IS— ron(iiiu«i. (Comparator Mi-asurcs, Stiir t^lanJafd 1330). V.l \vt V.l \Vi I i(v: Vcl. \Vt. Wnjlhted mean + 22 mi V. - 17 :Sl \'i (Kt Standarii - 18-60 Kaiiuil Velocity - i.i y HI -so i7:ii •w.i IS til) ir. 1 + i'j-2;i 17-2:! i:. 01 15 :i:i 12 Tn 111 17 IT 1^ ■tH) IStJO 1.". ''^ 17 t- oil 1 tiO ■JO 1 f 12-46 21-."):! Ill Ci ■JO '1, IS '.lii Ul:>2 22 ()2 Vcl. Wt, + 23-35 12 3(1 Hi IN II) i:t 11) 42 + 13 'J I 14()(i Vel. ! W I. 17 1., 1.7 Is 1)0 I s 2 I.. 17 20 t> + 23 (W \ 27-00 i ■Jl s-' 1 -N 00 ; 2.S SI j 23. 52 1 f 23-23 : 2.-, 42 Is II 11 is (id ^ 111 )HH1T 1)1- ii COIiON.K liOHKALlS. ■M6 liiUluli 10 11 u It 15 Mi;Asnii-.s (II- J rnniiN.i: H(ii;i;\i.is CHitiiiiu'i. (C'iMn|';ir:il'ir M.-isur;'.-., St:ii Slandiinl lH:iOi. 4107 Vil. Wt nil \il \\i 111 OH i \:, '.I'.i ; JO 14 i 'J*! o> -i 24 43 i ■J'.i ,rj i:i 71 .'1 Ml I'.i 17 ••04 lit-3'2 V.l JO 0(1 ' ■j:i .s!'-5 j:i ■t] i •2i) 03 3 IH 5S 1 mean V. .Sliin'lur.l Ra;14 11 - iSOO I'.I IS IS-.'jS IS 00 - ;si + -.rjoa - 19-31 - IS 00 ir> 3 4 13J V.l \\I t Js liu ; •27 -oe' 1 ■j.i-N.'i' ; ■jci 00 ! + '2^-73 + 27-03 - 19-52 ± -00 - 18- jO HI Vcl Wt 14;;4 Wt 11 i:; S .")0 13 -'.t7 13 -J.-, l.j 11(1 11 SO ii-,-r.4 IJ .14 1 130 V,-l. Wt. 17-00 + 2o-9S •20 05 -r 14(14 - r.i SO 00 - 18 60 - 24 5 22-121 23 81 10 -00 I'.i 02 10 ■(■>',> 2. (40 21 -vl 22 S2 24 (K) 22-76 10-32 + 24-25 r ■20-07 - lll-Ml -07 - lS-60 +- •22-06 - 10 -211 -OU - IS 60 - 18-5 15-0 ;ii;K\ A I < )in . l!,'i;-,ol! 10 11 \2 It 1.") Mr.\srUi;S hF h ('(iIKiN.I: 1U)1;|:\I I-^ -Ton/inufd. i'_oinpar:iti.r Measuri-s, SUir Slumiiu-d 4330). V.l W 1 Wright C..1 ini-an V. Staiiil:inl Ua.ll:,l Vclocilv + I'.l 0-J I'.i -M 1.". II'.' IS s."i 17 r,s V2 :,\ - Hi 7;i V.L \\t V,l \\t + Hi .'i(i - JO 117 ■JO 117 14 Ml 15 sr. JO I'.N Jl IKI IS JO 1 s 1 J 17 -.M I'.i II'' JO 07 f- 22 01 i JO U 1 I'.I '.I J ; 2J .Hi i J1H7 i t 17-7N i jn ^'' Jii Jl II l> 1,11 V.l W ^ Jii',10 ; I'l .V' : I',' III I 2."i ''ii ji-7:, JO-tl •f 17 7s \ . 1 W 1 20 '.'."' Hi 77 22 OS 1."' si Ill 02 20 US - Jl J7 Jl JO 21 - 1" U - Is {,11 Is 17 7 - 17 i;t 1.-. ■23 ■ 4S IS s.-) 10 0."' 10 u ; 1 SI', Is U - IS 11 Is 1,11 JO 1 \ . ! W I S- 111 1 11 (i:i 1 11 14 i 17 0.J . IS. 41 t 4 - 12 4(1 + 13 3W _ lUi is Oil olililT iiF ii COHON.I-: H'lUKAI.l^^. ;}'j.j U.'i:i"n .Ml.ASrUKS nl ,1 CdlMN.K lit )HF..\l.l?^r,»i(iriw//. (Coiupavritni M.-,isurcs, Slur Sl:iriaaril i:i;>" V.l. Wi I'Ml II) U IJ 11 1.') WiM'^hli.l inrtin Vj StiinilMr.l U:l.ll:.l Velocity ni IS :iO \r| W I'HJ Vrl W - 2:f a;; \ ■3i JT 1 -•: It; 1 ■J 1 t:. [ ■ji; o:; ; iMi'.i V, 1 W I + la ;;'! IS I'.tt :;ii:;ii \ I'l'.tT i ij .:. in; Is t.ll 20() i ;>i ■:;t 1-' ■:il '.il n; ;ij IJ IS U \(1 Wl V,l, W I It ■2:>i 11-11 u as is 1,11 to m; 1.") -JO iti ij 17 sj llllW 4W2H \\t. n-.i HI '.It; 1 s.;il ; sua ! u) ai I iir.s ; la i;i 10 1 1 01 Is r,o 10 71 10 1 t is liO - I'J- 396 ITIU.H MinNS OF TIIK DOMlNinN (iBSERVATOK V. MKA>rRl> nl- ,-i (OUnNM. HClli: \!.lS-<'07.(in.«rf. K**gioii .i";;i Vcl. Wt V l'.i:iJ 10 II !-■ 1 1 l.'i \V,-idit«-.l Standard IS l.-i 1 ^ ■ "'J is 'i;; .>(i 111 Vol w 1 16-55 IS- 52 1 s ■ ',';■. I.-, 71 I!:iai:a Vrl.Tity - isy:) + 09 - 1800 - 17-70 + 9'W) 4- 05 - IS fiO 17 97 ; 17-80 1 111 tw ; ID 111 1 .'0 ■-': ir, jf, 17-60 S-5(> 00 IS -no I'i.'ii W-l \N I \V1 Wt \VI Wt 11 ;ii 13-79 11-87 - 14-32 ■f S-50 04 - is tiO ;i-9. _ 1 ■ r».i 17 10 15-5-.> i;t 47 rj 57 1 l.-,-7f, 114 1> I'.O 1(1 {t2 It ;sj 11 9ti 15 ■ji 19 97 11 ;;2 5-S9 (17 IS illl 27 1 495(i \-c.l Wt. 12 SO 1 {:< 29 i 50 -4- 00 IS no 23 (ilUtll I'l .:i idliiiN.K HOUF.AI.IS 397 Itl'tfUMI II !_' II l.'i (Coiiipanilnr Mcisuri's, Si:ir Stim.luv.l VaUl. V,l. Wt IVi.l I 1'." \.l \\i 1 1 JJ v.i w 7 I',' I 1 1 VI ',1 : 11 'JJ . I- '■' I WeiKlitcil V. v., St^ui.l.'U'l Knaml V,l...ii\ - 10 -.iS + r>ti.') - is lid ;:i 11 7 1-' 1 ir. ■ ii; 1^.|■,1) Vrl Wl III III I 111 77 : II 71 111.". 1 ."i t;.-, l."17 It 111 \.l \\t Vil. Wl 1.3 70 :; i:> (HI IS I'.O ■js 1 - K!-7S t- 2S1 i- -IHl |v i,n ll^'lli 111 '.II 111 til 15 ■().■> Uf)8 - 14-4K + -J-sl + (14 - IS r,o ;)0--J \ .1. \\ t 3-.".s J + 7) 12 ± - 10 I) - 11.34 + 1.75 - 02 - IS. fill 23 2 114 IS 11(1 - l!t 398 ,., lU.H vriON-S OI- THE DUMIMU.N OBSEHV A lolt V. MKASl-HKS or CdKllN.l- 111 .Kl, M.lS-rohluiuf./. (Comparator M<:i.siir.», Star Stanaard 4330). Ucgion IHM Vil. Wi 111 1 I \Vi-i|£htcil mean v. Slamiar.l ■J • 7'.> .■)4 1-87 4 «) 5-57 \ . 1 \\i \ ■ l» (HI - II Nl ) ^ so - (1 .M « • I) 00 i - lO . UO 1 * + 3 Kailial Wloi-ily 112 1 O.-! ■04 IS- mi 0-74 003 17 li 1 or. ■IK) Is I'lO 3-'.10 I'l'M Vrl Wll V.l WI is 1 3 b3 O-SS ■O'.t IS r,ii 7 mi sc. ;t-s') o-,'« 1 ;>•_> 111 -".I :- . ir. Ill r SO.-. + 431 - 73 f 20 \A. \Vt. J Sll S.3'.' II ;iii + 3 !ii; - II :;i IK - IS till .-| 31 II :u IS. CO + 4.;i2 - II 71 11 _ IS IJI .■,■_". I II 71 \.i IS. (ill 13. 7 1.- 1 oitmr iiK d cdUoN.ii liuutALis. 399 r.i'tMiii III 1 1 ij 1 1 iiir:ili \ . MTA-i IMS 111 .1 C'liiiiNV r,iii!i:\i.i> (.,„/,,..„.; -(■.ilM|):ir!ili>r .M.vi-un>. Star Sliinil;inl l:i;;0 Vrl. W V.I W 1 1 :i'i III Is l.ll \l W III 7i. , IJ 117 ;■ ■ S'll II .M ', .'. '.fj \ 1 111 1 'i "J J 1. 71 ; i:.ii 1 11 u> 1 ''J i J I'- I 1- J 1". I S7 II 'i:; V.I \vt V.l \Vi Vi'l Wl I 111 - J 'II - .'i mi - 'J ;ij - J liii 2 IVJ I 17 I .;'i iiii Is 1,11 171 Is fill II Jll 117 is l.ll ■J 7 1 117 IS l.ll 7 is i ;i • 'is ; ■J- IS i ;mj V ■J :iii ; •.t(17 1 If. :mi1 1 I'.l :; i;; 11 Ji :, :ii) .",17 H:i,ii;.l VelfH-iiy 1.-. II Jll 1 l;i iiin I'l HilrMIdN-- OF IIIK DnMIM.iN (iIt>l.HV \|( HI V . Ri'jjion 9 111 Mi;.\Sll!l> "1 -i I'i'lidN.l. Ilnlil \l.lS--('mi W) H-71 1-2 •)<» l:i (X! (i 01 14 tW i:i 93 + 11 -i'l - 10 M It? - IHtiO 2o SS i US" 1 13 46 i 10 51 { + 11-20 ! + i.-> o:i - UOli + !)■: - l^ iiU 15 2 t'l 5ti 12 52 4 31 .-i:i. 401 MI.V-I ll!;S nV ,) ClilldN 1. ll(li!l.\l.l.~ Cnnliniiril. (Coiiii>;iiaii)r Mi'.c^iiifs, Slur M:iim1.iii1 i'.VM). I!.Hi"i. .Ml.iil V. V, Sian.laiM Vplofity in 17 77 H 11 U IJ 1(1 111 U l.ttiB 15 + 11 15 1 1 117 IJ .'.II 17 1 \.\ W I 1 1 1.; ; 1.; I ;i ,; i|,"i 7 111 11 I "i ■,il 7s 24 \il Wt v.! Wt 41 1 r 7 1 • -•7 M '.1 I'l ."ii. ;. \:,i<" , 1 ', t )• ' 10 i:i U i ^ U V. Ml r7 II 1 1 7:. i ii, ■.-, U i:. Ill . 117 1 11 i:. .'(I '.Ml ; r i:. tt ; Wcinhtiil nifan ■ 17 :i^ 1', -'■ • ll. V. I- 17 11. in 17 V, I'.i 11 Stundanl - I s t'.o 1^ .-,11 1^ Uiuiiul Velocity - Hi !» - IX '.t 1 \ . 1 w ^ l^ :i7 ij :;ii 11 ii'i \ -I u + 21 25 I 17 :a 1 1 1 ,'i <'<)IW)NK 1«)KK.\I.IS— ruiirliK/nr iComiJiirator Mi'ttiiiirnt, Slur Sliimliird I:i;i0 l!.-liin,, \.\ w •'» t- 11 17 ; H 111 11 I'. ."' II i:. W.iula..! IIU'UII ■ 11 ■• 1 V. 1^ M v., i:, Sl:ui.lir>i IS 1.11 H:i.ilMl V.ln,ll> -- •' 71 .'I mi l\ --l 17 ilj \ . I \V I II ...I VJ 17 i;t .v; ;. s(i III III \ , I \s JO :\ Is ji. II. Is i.n •j;t r.ii •JI 'N. Is llj I'l ,;j ^ I'l si IIS Is 1,11 V.-l \Vt JO tw •j() J.") JS OH \.l \\1 + 24 27 S Jf. 17 ; :«) 71 1 ■JJ iw ; J I '.Mi ' -'- ;,i Vi.| Wt Is 11 •J7 (M ■Jl .')» j4-ja •J2;«i jt JJ Jl M + 25-27 •11 I'l 17 - Is W) i:!- 104 PI Hl.ICATION.H OK rilK I..t\llM"S < UISKIIVATOHY. Tlu- ohsorvation. w.-n- aiv..l..l ml., unnuvu nn.ups an.l ihr n..a.. phases an.l velocities foiuputcd. (See Table II ' T.vm.i'. II NllHMAl. I'l.A.lX Jiiliiin !>!>> I'haiw Viloiiiy W ('ikIiI KiTUliiaKKV 3 4 5 e » to u Vi 13 t4 •.•,4J9,l.">ti 7S IMS t>7 ■:\<.i " ■J71 r.» I<.tl 77 llli Ul ;!Mt .JO 2';! 14 •J 13 US 2!».^ 77 :i47K4 •.» tt4 30S7 33 tVS 30 -.W 3H'71 23 •JlW r,Zi S tW 10 h7 IJS'i 1.1 -44 21 03 •J4H3 23 JO 22 40 22 30 2.'>20 •2J (Kl 21 ■20 22 00 iH'.m l» '.« • 20 ISO ■ I'.t tMI - JO SH) - 20-40 - JO IM) 2 2 O I It 1 .1 2 1 2 2 .1 2 2 .'i 2 2 2 (t 1 - OMi + M ^ l-.Vi - 33 - im + 2 110 - I 10 + II 30 10 - i:ih - 0.". - 'J2 - :'.3 -r Otis Tho^ f„u.i.'.'n .M.nnaU ^^ru■ \^n^u■,\ nu.l a .•urv.. ,lH.n,n,:..i uraphu.iUv ,,,•,,, ,i„,,i ,,,„,„ ,,,.y -a.i-ta.M.Mih. -rin^ wa> a^ tar a~ ihe uork uas ,.,,,i..,l a~ .1 ^^a~ i-' .•onMil.T...! that tl,.. .vsults a.nv..l at u.iv M.lhrun.ly ,l,.,l,.i,, ,.. autlHU-iz.. a.. aM,.-„p. a. ..val.T .■xarl,K-» in .!..• linal valiU'^ -.1 the eleiiH-nt- .,1 ihr mvxr. Vu-K -Ih' a.vura.-v ..I th- ,„.a~u.v>, .■..nsul..nM^^ ,1,.. .mail in.al ran.... < 1- 'a!..n as very threat. >v.uuA. tl... sine ,.„,,,. .,r ,1„. tl.inl IhhIv v,„h win.!, ,!„■ hri«l.t hn.ly an.l its .-.MnpanHm ,■„,,„ ,!,.■ L.ni: p.n.HJ ,,M..llatinn .■ann..! 1,.. .•..n-i.l.^.v.l ^.■rv u. 11 .l.^hn..! -■. ,l,u .l,l,..ud. .1,.^. >n..aM..r> an.l tl,.. nn^r .u.t, i.v tl,.. tlnf.l l,...ly seen, ,„ ,,, ,i„. he.st .so far ..htainal.l... it u..uKl lak.. many >n.„v ..LsiTvalions ,„.l v..ry eloso measurint; t.. ..nal-l.. nur ... as.sert ilermit..ly that tin- .- .!,.• I III., .ondiliou of atTairs e.sistinK in the system. ullHir«)K (i n'UnSV, ItiillKM.I- 40S 'I'll.. ..IcMH-iii- -if ill'' '■'"■vc lire: /' Id '.I (lays r - -4 J - 240° r = 2.418.7:W-29 J. O. K = :i- It) ktii •y = -'.M '-'s km ,, ,i,, / = l.iidd.iKin km. Km.l 1 ill! i 1 r I 1 j 1 : i i 1 1 t 1 ~|-4 te — 1 i - — 1 — — II — >-r© y4-= 1*^ 1 ■-< >^ / 20 zizfi — 1 xy] ' ■^ ^ > o — 1 . TT -A—\ ^ f~ 1 i 1 S' 1 ■ » &- 1 ! " N$' ^ J — f- o >N 1 94 —1 ~ 1— — \ >- ^ r — cj _ M — -, 1 J ! . — — T— — 1 — _ i _i^. 91 1 1 ! 1 L— __^^ i 1 i — 1 — 1 — 1 1 ( — — ! ! ! 1 1 1 1 { { ' .Li- LJ ) n .J 4 8 2 16 ?o 14 ?8 J Velocity Ciirvr »! ii ('"n.iiM- H.ir.':ilis. -1-h,. pn-lKihl. .'rn.r -f an a^.■ra^.■ uhMTvatmn wa> .-ompu-Ml ... hr 2(i km and '<( an av.Ta^ic normal i.lacr n.(,.i km. Dominion Ob.-^civato" Ottawa, Sci)trmhcr. l'.>12.