MHM C!HM Microfiche Series (Monographs) ICMH Collection de microfiches (monographies) Canadian Institute for Historical Microreoroductions / Institut canadien de microreproductions historiques 1999 Technical a The Institute has attemi copy available for filmini may be bibliographically the images in the r( significantly change the checked below. czf Coloured covers / Couverture de coul Covers damaged / Couverture endomr □ Covers restored am Couverture restaure Cover title missing / I I Coloured maps / Ca j I Coloured ink (i.e. ot Encre de couleur (i.i Coloured plates and Planches et/ou illusf Bound with other ma ilelie avec d'autres ( D D D / Only edition availabi Seule edition dispon Tight binding may cai interior margin / La I'ombre ou de la di: Interieure. Blank leaves added c within the text. Wheni omiled from filming / blanches ajoutee; apparaissent dans le possible, ces pages r Additional comments Commentaires suppk This item is lilmed at the reducti Ce document est (ilme au taux d lOX 14x 12x Technical and Bibliographic Notes The Institule has attempted to obtain the best original copy available for filming. Features of this copy which may be bibliographically unique, which may alter any of the images in the reproduction, or which may significantly change the usual method of filming are checked below. CZf Coloured covers / Couverture de couleur □ Covers damaged / Couverture endomm.agee □ Covers restored and/or laminated / Couverture restauree et/'ou pelliculee I I Cover title missing / Le litre de couverture manque I I Coloured maps / Carles geographiques en couleur □ Coloured ink (i.e. other than blue or black) / Encr3 de couleur (i.e. autre que bleue ou noire I I Coloured plates and/or iliusfrations / I — I Planches et/ou illustrations en couleur □ Bound with other material / ilelie avec d'aulres documents D Only edition available/ Seule edition disponible Tight binding may cause shadows ordistcnicn alcrg interior margin / La reliure serree peut causer de I'ombre ou de la distorsion le long de la marce interieure. Blank leaves added during restorations may appear within the text. Whenever possible, these have been om:ied from filming / llsepeut que ceriaines pages blanches ajoutees lors d'une restauratlon apparaissent dans le texte, mais, lorsque ce!a e:£!t possible, ces pages n'ont pas ete filmees. / Additional comments / Commentaires supplementaires: Continuous pagination. 'ques et bibliographiques lUt T '■ ''me le meilleur exemplaire qu'il lui a P' e procurer. Les details de cet exem- pt''' - peut-etre uniques du point de vue bibli- Ojjrc^.iique, qu' peuvent modifier une image reproduite, ou qui peuvent exiger une modification dans la metho- de normale de filmage sont indiques ci-dessous. I j Coloured pages / Pages de couleur I I Pages damaged / Pages endommagees D Pages restored and/or laminated / Pages restaurees et/ou pelliculees Pages discoloured, stained or foxed / Pages decolorees, tachetees ou piquees I I Pages detached/ Pages detachees I y/j Showthrough / Transpar D uence D D Quality of print varies / Qualite inegale de I'lmpression Includes supplementary 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 fa^on a obtenir la meilleure im.ige 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. This item is tilmed at the reduction ratio checked belcw / Ce document est (ilme au taux de reduction indique ci-cesscus. lOx 14x 18x 12x 16x 20x 22x 26x 30x 1 1 1 24x 28x 32x The copy filmed here has been reproduced thank: to the generosity of; Ecole polytcchnique, Univcrsite de Montreal, flibl 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 pagu 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 — ♦• (meaning "CO,V- TINUED"). or the symbol V (meaning "END"), whichever applies. Maps, plates, charts, etc., may be filmed at differ Mt reduction ratios. Those too large to be entire / included in one exposure are filmed beginning in the upper left hand corner, left to right and top to bottom, as rrany frames as required. The following diagrams illustrate the method: L'exemplaire ii\m6 fut reproduit grace ^ la g6n6rosit6 de. Ecole polytechniquc, Univcrsite de Montreal, Bibl iothOque Les images suivantes ont 6t6 reproduites avec le plus grand som, compte tenu de la condition at de la nenexi de lexemplaire film6, et en conformity avec les conditions du contrat de filmage. Les exemplaires originaux dont la couverture en papier est imprimAe sont film^s on commencant par le prer^ier plat et on terminant soit par la dornidro page qui comporte une empreinte d'lmpression ou d'illustration. soit par le second pirt, salon le cas. Tous los autres exemplaires o.igineux sont filmis en commengant par la promidr oage qui compoae une empreinte aim 3- ' ou d'illustration et on terminant par la darnidre page qui comporte una telle empreinte. Un des symboles suivants apparaitra sur la derniAre imago de chaquo microfiche, selon le cas: le symbole —^ signifie "A SUIVRE", le symbola V signifie "FIN". Les cartes, planches, tableaux, etc.. peuvent etre filmis i des taux de reduction diff6rents. Lorsqua la document est trop grand pour etre reproduit en un soul cliche, il est film6 i partir de I'anglo sup6riour gauche, de gauche d droite, et da haut en bas. on pronant le nombre d'images n^cessairo. Les diagrammos suivants illustront la mithode. 1 M(CSOCOPY HESOIUIION lESI CHART 1.0 IfKS i I.I 2.5 22 1.8 1.25 IIIIII.4 1.6 /APPLIED irvMGE Inc ,ti Mo --. ."•••■■ ■ ■, Nm (or. i6 - %9W - Fo> DEPARTMENT OF THE INTERIOR CANADA Hon. W, J. UlMBr, M.m,ttr. W. W. CuHT, ('.M.C, llrpyly Slimnler. »*2i'- PUBLICATIONS Dominion Observatory OTTAWA W. F. Kino, C.M.G., LL.D., Director. Vol. II, No. 2 The Spectroscopic Binary ff Tauri J. S. PLASKETT, D. Sc. d OTTAWA GOVKBNUBNT PaiNTINli BcBEAD 1915 CAl MT U03 P02-02 DKI'AUTMF.NT OF TIIK INTKRrOR ( \NAI)\ ll(.N. W. J. Illif Ul, l/irn.ri" \^ . \\ . CttUr, (.S\.i .., lUpitlt Vini.lfr. V / PURI.ICAIIONS Dominion Observatory OTTAWA \V. K. KiNii, f M.G., 1,I..|)., Dimiiir Vol. II, No. 2 The Spectroscopic Binary 6' Tauri i. S. PLASKETT, D. Sc. < ) r r A w A tioVEHNMENT HRrNlINiJ BrHtAU 1915 70334-— 1 Ill -I'l ( I !;< 1-1 "i'i( r,i\ \\:\ " i \i i; ll> I > I'l \~KI I I U.S... TIlC sl:ir " Tnilli ■,. l'' ■."."" '1. (5 ! I •'. .".'.I'. Ui;l'^llil lldr .'Mi. -|i(-.-tr:il typi' A.'il \\:i' :ililii'i|licii| M- .■! -jMCl |ii~<'ii|)i{' liiii:il\ li\ \|nn|r in lln j.ii-k (>li-crv!itnn r.illlcllli. \lali\ .lilllaii il:i\. |)|ia~i' ami ir-njiial lln' I\mi lallii' luiirj ulilailMiJ Imln llir 'hliirllts lllKilK ai'iTplrcl ' all' i'i\rn al llic 1 k'i,' liiiiiliii '<\ i In- lal''iiil iina-iliv 1m|ii\\ 'I'lir .-lar wa- |ilaci'i| liinlia' i il i-ii \ al inn lure mi I )( ii ihIhi- II I'.Mi'.t, ami lirlwrni llial dale alnl Mildi, I'.M'J. lir, |i|alr- uriv iililailirii, Ol these plalc-^, ■">'_' wrii' -ilirinl anil hiia~iiiiil. lln iina-ilii- ni ilir plalr- well' i|i~cii-~c(| ami a | ii cliliillia i \ nii'll i il il ailHi I ami | ml .|i In 1 1 in llir .luiiiiial 111' llii' iJiival A ■Iriiimliiiral Miriilx nl I aiiaila \l. |ia"i' _':;i. ,liily- Aiiiiii-I. I'.IlL'. A -iiiiiinai) dl' llii- wuik Will hr v:i\in lairr liill. a- il ua~ I'fll (ji-iialilc III liaxr liiillirr iili-rr\ al imi-. Hi iiinii' |ilaii- w'Vr olilaimil ami inra-iiiTil inakiii;; a Inial niipN plalr- mi w liirli ilir picMiil iliiciiniiial imi is l):tM(l. Tlic s|iiTtriiiii i~ III' lypf A.") cmiiainiiiij: iiiinicrmi- imtallic line-. Iml illilm lillialcl> all llic-r liiic~ arr \uilr ami ililTil-r inakinij, liic ima-iiicinrnl- inm-f nr Ic-^ iinccilain. 'riii> i^ ~lin\Mi li\- llir | r am-rrninil miin |iii-riii hclwccii liilTci'i'iii line- mi llic -anif plair ami l>\ the rmiipaiai i\-rl\ liiuli pniiialilc crior iili km prr .-ci'mid n|' a -iimlr plair iliri\ri| rrmn llir plalc rr-iiiuaU I'rmii iIh' liiial mliit. I'mir ililTnriii lii-pri-inn- wi'iv iiiril ill ilic hippc III' liclliiiii iiimv sali~l'acliiry iiira-inv- wiili ilii> ivpc of -| iiaiin. Iiul no "lie --iKiutMl \('r\- iiiaikcil aihaniaiic^ u\cr lln' dIIicis. 'l'lii> will bi' (lisciisscd more I'lilly iaicr. Tlic principal lines nicasiircil all lliosc iisnl in the nirasiircs with ihcir choscM \va\('-lt'nmhs and miiiitc arc ui\(n in the accmi:|iaii\ inii li-l. 'I"hc tiianiinn lines seeiii in ;;e;icral It) he the lie-l delined and im)>l leliaMe ill this spectrum. 7ti;!:<4— 2 t.l iM 111 II \iiii\-- III iiii iiii\ii\iii\ (iii>r,ii\ \iiiu\ IIM..X Mi:\sn in » r\i in -1. ,.!.•. I, i:i< UK ii) \\llVl-li'IIK>l>' I li'IlM 111 l.'isl Ills l.'iTJ l.'iti l.',(i:l fiiM l.'.l'.t TiUi l.'i^ll IMi| Tii:. .'.OS t:i(*s i.v. I,'.0I (IS ll'.M 7:is lisl li»» IK'.s i'.i).l /. /. ;. It r, Ti Ti /. r, It:,:. iiK iii:i Jill llltl ir.'T liitHt •>:',". i:«t:. Jill i:!7i :.Jii i:i:.Mi.iii i:uii tcu l:ij:i |i:i'i i;ii:i i:i> |-.>!K» :i:7 lih ii.i ft r,-(r T, m>Hii I' I II /■'. 7i 'I'll, iiinip:in <>< llir lilf;i>\in- nl' iln' r:ill\ |il:ilr~ :il llic 1 irk Mild \(rki-- (i|.M'r\;ili)rir>, n\' llic .",•_' |il:ili- ii-r,| m ihr lii-l dilii iiiiii:ii imi. iiml ,,|' (lir IC, pliilc- iilil:ilMii| -iiliMi|iiihI l\ . Willi nlliii ilnl.i ;ili' Ui\ili III llir :irr(iiii|i,iii\ ihj, lalilr ;iIhI llii- i- lulluwril li\ lalilr- ci ninrniiiiLl llir llir;i-mril \;ill|i- 1. 1' ihi' iliili\ i.lnill lini'-. Willi till' ciinrrlidli- 1 1 i |l 11 1 ri 1 In irillirr llic \iliirllii'-- 111 llir nil. -I MM \\;\ 111 Ml \,-l KIS iMat« Nl.. l.irk I'M. y,,i:,- ri„f, D»ti< I), , l.u. ( »■•! S.-1.I. 1 tl 1 (111 Aim \..v. All,. S,.|,l .S|,l. I ll I \..v |l. r ll,r I, I'm; •J I I'MII, I '11 Is l!«ls I'HIS I'Klli liNir 1 1. MIS |i.KIS 1 1. II IS MKIS I 'HIS I '.I IS I'll IS .IhIliM S|ii'i!ri>-| l'li:i-i' Vi'iK'ilV Ki-siilihil lii.ilili II-' Kiliirilki !> h- J iii; I'.ll 711 t. si'l iiii 7 Iss i;:i > I'l.; '.III s SM s.'. s ■-'III S.'l 7 i:.i ss ssl 77 s 17'i 'II ■_'ii.; s.", JJ7 S.'i L':.i •7s ■JSil li;; Js7 I'hi l:;i.|.|ll -r;is - 2-H II.-. !H( +;■() + i;»« .".1 !.•. +T» - --Is .•,:; Jll fW) + Oti ■ III l.-l -1 17 -14 » IIHI 1.-, -{■Zi - l 25 -i-ss f It-tl |-.:M- tio -IS 7 s7 i: i t ;i>.» + »'.t II Ml> UHl 4 ;i .' j: +.% - (Ill c.-ffl 1 +31 -i;i Scimilaiy 4 40 Sii'omlary +S TIIK Kl'Kt Tin ».-< Hill IIIWIIV I) I Al IM. M -I MM \\:\ I'l \ii.A>i i:i I'lii. i>lllr .lull |l I iri> I'h . \ II I«ii .Ml! ! Hi.. Hi. I'KCI .■.nil INt'. IH. I'HII. ;;ii..ii I»ll-. •JH. I'Hf. :iiit>s Ur. :Mt. HKH ;iii;ii I).v. •w. I'Dfl .;ikVi ' lull 1 . run :inr> \m\ II. mill :ill. mil :llivi 1.1. .1. i-.iiii :iJ»ll I-.4.. -•1. I'liii ;•.:t^ K.*. •.'.t. I'liii ij-jj ^.•1.. JI. I'no :i'.'.M M;.r. .. I'll! :i.tis M..r. :i. I'lln :uwis Mar 10. 1^*11) :i:i:ll Mui. 17. HMCI :itij:l <..,,.. ~ _ itiiit :iii.-.l Scpi, II. PHI) :mv.w S.|>l. I.'.. PHII :uiiiH «s-|.l II'.. t'.HII ;«1K7 .•M'lll .'I I'llii :i":m) o,-i III riiii 1(74 1 Oi't IJ. I'llO :i7M ((.•I :il. mut .■t7!>:i N..V. '2. I'ljO :iw« N.iv. s. I'lM ■ ISIS I>.v. l''ln :i.M.I !).•.• >.>. i;iiii :i.s.v.( Uh- 1-'. i"i(i .i>7l IVi. 1.-.. I'.no :isss !)..■ •JI. I'liii :;'.tlf, .Ian Mil . ;!'.>.rj .li.i. '1 I'll . :i*.«."»a'7i •i.'." 7 1 IWiIMUl iir.'t-7»> r.;i .M I.; I li.". iirii-.'.j I.Ml'lili lis? .'VI It'll •."Mi 7l»i .1' 7-.'l-.".. 7'.'ii •''•"' 7J7 .".li 7:"|.ti:l 7:il .Vt 711 lit 7 IS ■ .M tCJMI •.r.ll?*!! '.i:!0 H7 !i;!l 7'.i (Cili S.S '.t.V.IW \>:,-xs «7i|.7:i (i7s ,1^2 " .1 v| ■1 III! 1.. III.". 117 Ills iMI lUI li.'. IIJ7 liii itr.' .".7 mii-iii CM!) Ill (ri:j.«7 O-Vi .w (m7'.".'.i ;(•_■(»• 7'.i :r.>'j-sii :i.(s-7.". ;|-7-77 :i',N)M ;t!»i.7.'i 4i ill s I I III .>! 1 ill l( III li III It I I I I I I I I I 1 I I I 1 I III I. I I 111 I. 1 III I. 1 III 1. Ill I. I III I. 1 •II •)! INi'Ml lllil-!r> !!►» 7l| lllf»V.I nil 7'j! lai wi +-*.d - a-. iji 7;i r.N 7ii| :i'J"j •.'I ll.'.; •J I' mil :;ii i; :it IK. Itv II lA.iini 7H-IKli S.j.|Ul| s«.(l7 H7 ■ .".!• ■n.>-ii.s! Ill 70 ii:i lis! i:i'j :.:i| i:!i »'.>! I to. til! •.••i-77' :.0 77 :t:i-7ii M-:, T.' 7li .*i7 ■ 1.7 01-71 ti|.71 lis. 77 70l«l s-.'IKl .Villi .Vl .'.lii 7U l.^! 17! '•'; III ti7i 111 r.'i i;h) i:!7 CIO ■' +;ii CM •' t •-••-•■ I I ill -I I Jll'J > :i-s.it ^;i7.| I in i r.' « +.-.7 ^ III-; llO li ^.vi o; + .^■111 + 7I-H +:il» +;i7.:i I- 12 -ft + '.7-:i' -l-:«i-» -f.'.".-s ■f:i7-il -i-:is-7 ■f:i7-s •f ii.;i ■f.Vl-7! -117 - li I -- |.» - s II + »-s - I li + a -II - :,-»i + tt-s - 10 + H-."> _ II + 7 + r.'-s +M-:! :■-! -iiii +.".-ii 4li7-0 , fj-r +•-•70 •f:«-:! + -••■• -Si -f-js-o! +r.-ii +70 7 -t-liJ-l ■t'ili-'.l (-:il ■.--'•>-i| I :j.-. 1 I III-I + l.->-a ■Ci'.il + 40-7 + .-. 0! - «..-i! + JO - l-H - 2-7 + J-:! + 4.tl + 17 + 4ii - ;i «. I- 1-1 - II - :t I + 4(1 - 1-0 + 10 4- 1^ I - i-;f + 10-0 - O--' - O-'.t -11 -41 - •-•4 + O-'.l - .5 « - 5 Ol I'r T ll'.".Sl-.+ 11 4-li.i .-^il.- — :i7 I'r. +.VI S.I-. +3 ri nil' A■|■I(^^^■• I'V mm i>'i\n\;ii\ nii-.i:i;\ \ miiv SIMM \i:\ I 'I Ml \~i i.'l - .■h,.i.,i I'hic ls:i.' 4s:i.-> isso .VJ1^ .v_'i:; .•rJ 11 .-.■.■.■I ■'r *'i'- 1 ."CM ."i.'.V.I .'iJliO .'iVC ."itNVJ .V.MI.i .-.'.« II .'■'.HI.", :,<.t\ I 'l-'rl>. liil., M.ir :oii JMil hlr' !■ ■• I |,V, 111.1 jl ).-t . II (.-I '.fan. I.I..ri , I 1.1. i . I. 10. l!l|-.> ij. r.ii-' 11. l^HJ I. I'M-' ;. I'll.' I'T.' I'lij T'l.' I'li-j I'll.' I'll.' I'M.' I'll.' r.Mi i"i I I'll 1 I'M : I'll I I'.'l I •J I .l.jhr.l I), I. MM. IIIM.i. 11.-, li.-, 17:; ."i." HHII-TS ! iw:; -Til ' li'C Ml j (■.V_' N-'. (".'I.; J lilt.; N . i.'ii. i;i i.'ii. !,:> ;i>i 71 71)1 7.. Jti.l.M'.ii i;,x-.v. |c-.:Mi-J nur.-,.; I1.-..MI IC.'I III) ^l"'"i"- I'ha. \,|...-.IN li. ...liiaP (i-c;, 1 111 I. Ill I III I. Ill I. .iiii'.ii r.(i..v.'i i:t:i-iK i:;ri'ii-'-".i; I ;:;i ii-.i;.' tMHi .,; i-j . r. II.: I 111! '.'. -l-.W-llj + •.'.•. -H + ii-n| -I I-^-Tj till Mil H t.S(l I l.v:. i Hi-!! + .Vi-ll -fl:M»j + ii:!.l[ + T1-^- + 7(i-ll J tkl-jj 4:!7-OII V.-l \Vi + 3S-3., - 9 - 50 - 13 - 0-2H + 28-4 + 3(i-31 + 40-33 + 43 -5h + -12-15 + 54-S- + 48 -3() + 38-45, V.-l, Wt + 49- + 49- 1 1 + 45-44 - 10 4S - (12 - 0-28 + 34 + 51-27 V.4, \Vl + 37-421 1 +- 44 -X5! -t- 37-45 + 34-92 + 37-24 i07() V.-l \\1 + 40-35 2 V.-l. + 51 11 50-51 15-00 20 28 •f 34-9 + 39-19 - 15 97 - IS - 28 + 22-8 4()-5(li 54-00, 2«-70i 30 -SO; •29 11 + 38-43 - 1003 - 05 - 0-2S + 22-1 42 4b 47 01 59 33 48 as Wt. + 41 56' 4 r 51-03 - 19-38 + ()8 - 028 + 31 4 76331—3 (iS rrni.irATiiiNs m-' iiir. ddmimon (>n>Kif\ wmiv. MI,\>ri;I.S I 1| 'I- I' \l lil (■nilniiinl. 4,iSt nis 4o72 I.Vi 4563 (WO 4540 76li 4S:i4 ITO 4."ins t:,:. 44'.>4 • 73>> 44Hl-4nO 44tis nf.:) 430:. -'(•! 4:vio fti4 432.') O.W 42<>0 37" .no> \.i \\i V.'l Wi . (3-34 ; t 111 '.IS 1 If .V.t 32; 1 f -AM I f ti()-73 \\ t- 4'.i:.3 i I 11 21 1 h 4'> IKI 1 \.l \\t Wficlit'-'l rii(':in V, rurv Rflfiiril \>lori1\ .M 72 22 I VI nil n 2x . t'l ^ I>1 1 !'s 1 ;. 1 * tWi 21; 1 ► .'.'l (17 ; ^ (■.:> I'l u • 77 tl2 ' + 3.-.-7t> i + M f .■)2 «7 1 + Mi 4 7s .-ss ; >- 73 IS :il 1 *- 7"t i-.iMI U f- ii(i:>s I f (U-.V.I; 2 t tiS.|',."v ^ .">2 t>s *- 72 211 -< 7ii 7s - n 113 _ (1 2S 3S + 3' THK SPK.i Tlioscnl'lc Biwm' f>: TAini. 69 Mi;\SI l!i:s (i| 0- TMlil r„„rr ./../ i:,si {ii> i.vw (imi 4.')4!> 7i;i; l.VH liV.i (.-,1.-. ,vis 44asiit):( la.M '.«(• lL".Ki:i77 niran V, C'lirv Vflocif y V>1. \\i fill -N V.l \M f '.Ml 71 i f '.ts ■Js 1 J + SI) .-,1 1 ^ lOS ■-'7 ; + S.') r,i\ ', + si 111 1 t- M !i;! ', 1- 7',> Ill • (11 Ji ■_T» ■ 7s (1 ■_>> n JS + fino , III.-) In 1 4 llli.'l.'i ] f tVi ", f 711li^ + 1.15 • I Wi 4 7.-. 1(1 - (II ■.•,11 Vfl Wt V.l Wt + SI .-,11 - 20 7:! - n ji - fl 'JS + .-i.v.s • s;.ji; ; , 7:{ (II 1 t s.-, ii;i 1 r (i.-i :r. i f s(i mv i; + lii:i7."., ( + (i.',-Jl 1 -f (rj-^ii ', ^1) so \ si s,-, ; + 71; liii 5 1 iici :i2 'j . (12 •;n ; . (Hi 1(1 li -r (IS IS 1 :(H2:; V.l w- 7 (II 21 -M fiir.di 1 SS.tli 2<> i:i n 2s 2s .■ii;:.i Vrl Wr + IS-XS 1 . ill :!."> 1 - n-Hs! 1 1112 1 :m,i!5 Vrl Wt. + 2.-1 -35 + i:i-7s 1 + v\r,< 1 I ii'i 5 . 21 (IS ( KK) 70 - 2S 12 - n 21 - 0-2S + 72 1 + 20 o:i + OS - n2s :il 9 + !l"0 1 ^ K)i- 4 f 20 25 i r 4-70 » 14 2S ,3:! nos 2s + 14 So + 2819 4- 06 - 28 42 5 70334— 3i 70 l-l Ul.ltMltiNS OF TUK UOMIMO.N ( !BSKK\ AKJUY. MLA.SI UtiJ Ul tf" TAl Kl I tatuniil. :it)tts :ili^7 37311 liTU 37S4 37'i.l 3S(I2 X >,1, 1 \\t. V.I. \Vi V.I. \N 1 Vrl. \\1 V.l. Wi V.l. W 1 \M Wt, ■ — - ^■- 1 4.')S4 Ols 4."i72 ir.o ~ (1 1'.s ; ^ 4-S7; 1 - 17 41 . - 7 '.Mt 1 , U Ml 1 - 7 -»J 1 +- 32 '.IS 1 + 11 .VI 1 . '.".I ts i i -JO .^7 i + 4L"J3; i i Ul 3.1 + 1.1 1."); 4:>ij:i '.i:i'.' + 'JO.!'.! i 1 T 10(11 li t -JO (i7 \\ + 22 OS' li 4.'i4'.i Tilii 4:);i4i3" — -1 tt7 i - HI 1)4 1 , si.-, 1 + 4'.i 01 \ + 30 '.'0 S -\- 40 14 + .iO-20 4 51. '>■.".( IS + 10 (11 1 + ■JS.17 1 -t 30 31 1 + 4H..')0 * 4:iOS 4.Vj + 3334 + 50-42 1 4.UI1 44S ^ 2ii()4 U + 24 70 2 •> 44S1 IIHI f i:( I. r _( 3- • 44tis (itiii + »■>« 1 1 . + 2-7S \ + 4 -as I + lU SO i + 14.8S i 44(t4 ',(-•; 4:f'.W 'li.'i - 1S-4S 1 i I'M i + 24 ^s i + 2<.l-.1s 1 4;t;t.", joi ^r .!'-".l 1 4:)74 .").'l) ^ rj'.c, i i^ 'si t + 10 IH 1 + 30 .201 i + 3S ■«,-). i 4:i5i ■',•:!() - .'i 37 1 + 2S.«.i3i J + 33 ■5.'), J 4341) li:) I + 14 11 i; -^ II .^S i t 12 27 i 4325 ■'.«'. 1 - 1.' l^ 1 Wiiiihlcil r '.'111 f :i-'Mt + Hi 40 + -.'.I 10 + 2.-; 11 + 34 -.12 iin'iin - i;{ - ■ 'JS + Jl .">0 - (is - 2S •- 13 '.'7 + 13 02 + 1017 Curv + US mi + ■.'(! - 1) JS -t li Jl t U (It - II Js - 13 - 2S - OS - 10 - 2» Haiiiul + ^7-3 . 30 f r.-s -r 37 + 3S 7 + 37 S + 44-3 THK SPKCTHOSmPIC BINARY S' TAIRI. Mi:\sri!l> I'l fh TVriil Cnnlinurd. 7'.' OH 172 04 2S + fill:! — IS 4S + Oti ~ 02S + 42 7 + 47 41 - 20 11 - 04 - 2S I'l Hl.U AlliiN> t^'t ""■ 1><'M1M'>>> iiU>i;iiVAli>KV. Ml.A>t 111 ^ t'l y '1>> HI r,„./,„a.r/ 4JM Ul"^ 457 J l''li 4'iii:i '.':i'.t 4o4>l 7iMi 4ri:)4 i:i'.t 4a01 41S 44M 4IK> 440s IJ(J3 4404 yj7 43119 • !•:(■■) 43y.') -til 43.")1 WiO 434U lilil llll'Ull V. C'lirv. \,l \M ■.:t 04 411 ^'.1 1 I'.l 11 1 t- lid .i.i I r 4() '.'I'l ! \ 1- 7ii ■.f2 1 t- Hi • ^l 07 ■-•:i \ ,1 W 1 \ ,1 W 1 \,1 w HI :;ii 11 I'.i 11 i ^ 111 ■-'7 . ,-,> ^^ 1 - I^ IS + 73 •J.-i 1 , ■J4 lis t ;iN'S4 V.l \Vt. Uu.ll:il Vfluilt\ .'1 ■.'.'. M IK) J> - :iJ 3 I'.l 11 • Is -M 1 • Jl V.l i ♦ 30-3->' . IS 31 t U 07, 1 7-73 S + IIJS'. 7 03 3 ■->■. f Jl 03 1 to 7'.l 4- 11 73 Jl 1.7 -r- 1.V4.' 03 f 07 U Js - ■Js r -0-9 •IHK SFKt IKUSCDHU HlSAliV tf: lAl lU. MEASLUE.S (II (f: TAllU < - ,/./,„..; 74 IMHl.H \rii«N> "K lllK DIIMINIDN (.11 -KHV A I nf! V. (ViJ 4."i7.; lali 4:.:tt li'i 4t'>l IIH) 4iivs ii('>:i 4li:i Ji:) ■\:\'>:< 201 t:i:i 1^1:11) 4:i40 IVM V, Curv. \i-\ , Ml in ; -f '1.-. 11 1 f Sll (III 1 Ml;\Sl HhS Hi " TAl iil Conln,;..!. II j:! JH is:i,-i .".J I- * IfJ Tl i . VI Jl S . St) , 111 :t'.i ; t'i'.l 1 Vrl • II '■'■- ! , .-.J M'. 1 f .viVJ 1 Vil \\i \.l + 02 OS + .VlTwl i + .VI '.IS 1 + .-,ii 11 i t r.i HI 1 17 111 \ X, y> 1 Radial Vrlnnlv + fiO I + .-JK 9 + ss .-lO 4 .-.-.a) - jii n.'i - 2S - (1 'JS ^ 1) JS + 2:1 2:1; ', I f 17 7J + 21 l"'> , II 12 - II 2S + 41 ti r Is IK) ', + 2.-. II ', , 12 r.7 1 • 211 111 ; f :ts lis 2 t :i!i .V.I 1 \vi \.l \\t 111 1.-. ; , 2:t .s.-. 1 1 t -t ^ 2.'i 7."i • 2:mii + 11 Ml . y, 11 1 , ;i7 .'.11 i t :i.l l."i IS + :i.-, .Ml 1 •(I 1 +- IH-M 1 f :io ;!* i . -".I 1 1 ; 2 1 + is '.in i 1 21 ■2'. I 1 i 2:1 II I + :iO (10 , 21 r,;i t 20 07 4 20 06 -t 12 + 04 - 2.S _ n 2s THK >vy.< ntiix "I'K iiiNAin « i m m. 75 MKASl Ul> 111 0' TAl lil ' 'iuhtvu'H. + S.'i :ts; 2 I '•■1 7,V 1 HS 2(1 I'l III _ ns _ n is F''^ 76 ,,, „, I. Ml'iN- "K IIII- DiiMIMt.S ull-1 l(\ M'llt^ Ml \>l 1:1-^ "I " I \M:I < „Hcladil. MOi ,V,H):l .'t| I Vrt. ^rvTlw^-i VH. |Wtl VVl. |W,., Vrf. W..j_V^_WuJ*>l_|W«- 5 I.->M (lis f »■-• :<" 4:i7..' IVi f vj 7(1 -I I ;;:;:,:: .,„„.,.. wia^, \ +^m i +"-*'j » +«»•"",' 44C,>, c;4,;; i 111 >:l 1 ^ ^,.7,, j 4340 r.iu 4:i-.'.") ii:i',i * <■! 1" Wiiiilitpil int-uli \\ Curv. HKI II f Utili. . o-u I - " -1 - 2H f '.11 HI - JT IT II I I 11 -'^ 1 f 41 *.> I .*( 77 ' + 6> 93 7 **■'' - 'JS 05 n iti t> o J** u _'^ \M.n,.narv of ih.' luwious w.„-k .... tl... n.lii.. wlii.!. lia^ .■uiisiil.Tuhl. ;,ti.,n will ..nu lir i^ivcl.. It was i..u...l ic urliii. Ill i„.ariiiii 11.1 llii- lalf.' il''lt'.-ii..ii ,„.,.r>~a,'V ..I raiTV .hn.'i^iii ih.v l.'aM-M,i.a.vs .ululiu.is uf . ill,, lii'-t tuic 111 i1h-i'. a i-iii'|-''i'l.' ,1, |-,,r tlif ii.-.-iiiil wa,^ iiili-iMliiii'il I'll' ^^'"''i llii> cii.n ,,i„„ ,,,, ,.a,n,.,l fiiis^a.-.! U> .li. l-iA ami Vrrk..^ „l,M.na.,u,is it iv.. ,uu..il ,.. lir MU... ...a,.,.l.i-al,l... ( u„m.,,iu.,i- ly ,li.. „...io.l was .lH...niim.d ,. H.iM.lv as ,,os-il,l.. ini.n a .•.,.,„.an>i,ii of lli- .arlv w„h .1,- Ottawa vah.-s anil .lu' r.-Hir.-.i- In,- ,lii •.vr.io.i iiM.i-.i-l l.n.,. -h.' la.iT sulu.lul.S. Tl,.. mtuihI M.lii.ioii .vM.llril i.. si.rli a lai-i' "..■•■.■as,, uf l< aud ,.,„..,,„..„. .--■ of Ml,. ,iii>...v- niaMii....,! v..lu,.i,v aliuVL a.iv ..h>...-v.d ,..a,...s a^ a..ai„ U, li. i.,a,l..,i".Niv Tlii^ wa^ unduill-fdlv ilu. to th. ai,..n.v of a.iv nuawa oli~|...va..o,. ....a.' tin- l-ak uf ti... laMV.. wliu-li .. of ,-uur^o V..V -ha.p wlini th. ..........t.-...i. y i. UT. lu. tli. tlii.d solution. IllK. -yy-< I l|i'-( iil'M HIV \H^ " I V' I'l . so km , an. I -mm \ , i Im- .iI' i ^^ kin llicivtuic, iihc l.li-k ()li-.|\.lllnti >il ,,,1,,. ,1„. -a.n- ,las, .-pt s^ I'MIS. ^ry^ n.a, .KrM.ax un. u ,,.• rn.nlmM.I ,„„. :u, a.MlM.mal inal l-la-. an,l „hu, poral..! im..> -I- nl.MTvaUn,, ..,,uano,.. ai.l .1,- n.-ul>in. ^nluMnn ua- -a. ,-laM„>> . TI-.m- .htl-.v... N()luliiili> ail' uiM-li litre. Eleuii'm 1 I'l.l 1..1)- Holuiiim .;tr.l s,.liiii"ii :ii'l-"l ' ,., .j,„| 1 2,„| I aril .».tli..,ii l.i.k iw.ilil.i.k ' l'r.limm..ry. 1 Sohitwii ; I'relimii.ury .ii.l Vtrk.-i i ..iM N .i ki--. I I ()|,.,-rv.iii.iii■«>■«" I "" " 0-7.W I 70 0-77'.' 1 " '''" ;«.70 I ;i'.'0 I :t7 W ! •-■« I-'" ■M' IM I 45'0 I M' -a ' ^t*" 57 54.S7I) ; 55-74 I 55'J07 ■"■ I- + 4:itiO +43- 10 + 43 713 | + 1-' "•' -Ht7 ■_>■.■ tiM U t 104 7 t "■' I'l + '.>y-70 > +-J70 ;+ 'Ml 1 ^ -" " ■n,, ,,uio,.. lK-l,aviuur or tlH'M. ,l..|ncnt> in tl,r Micr.-Mv.. -ul,.tiun> is ,,,„. ,., ,,„, ,,,,,|i,„inur.v rlnnrnl-^ in ra.h ...>,• iifinu not M.Hi.-irn.lv rln^r ,„,|,n.Mn,aliun^ .., ail.-u ti,r m.,,,,,.! onl.r .lilYnvnt i.aU t„ lu' n..t.l.H..,i, aiul ,a,„ t., the laH, ana llii> ai>u inliu.'nc..,! tiu •■hni.'.' uf ti.r piviiinmary 'vaiu..s. tl,at tl,...v u.T,. I.mtvuI ion> near tlir |irak ..C th.. .nv^r wiul.- ,1„. „,l„.,> W.T.. M. >itiKHc.l a> !o al.n.,n,ialiv intiurncc li.r least -s,,uaiTS .oiuti..n> However ,I v.as nut lelt .leMraMe, as wa> done in Hie :}nl solution,!., eonil.ine tl,e Otiawa measures with thoM. iVom oiImt ol,-ervatones, esp.rially in view of I he hij;h resi,lual> fiiven l.v >ome ol' the 1,. :er; ami it was ,leri,leeen.iinti l-raneh of the eurve. t:. ..nahle a mo.v aeeufaf p.'rio.l ami more eon.-i>tent !iml homogeneous elements I .. lie iletermine(|. I'urther. the que.Mlun of a >eeotul spe.'Irum >hown hy two of the Verke^ an.l aUo po.^Ml.lv on some Ottawa plates slioul.l, ^f |).issil,l.'. 1,.' x'tll.'.l. The lirst seri.'s .,f a.l.litional plat.'s in (let..l.er. I'.irJ. \vas, throujil. an oversight. unf..rtunat..ly tak... at th.' wr.-n^t tin,.', ami it was not until January, 1914, that i.lules at tii.' pn.p.'r .'i.oeh wiv ohtain.-il. When these m.'asures were euiiii.ine.i with the earlier um.. it wa.s at unce seen ,,,„,„ v,n.N~ "^ M" .-M>M"v ....M-nvMn,n ,1,.,, ,|„. plTMnll. |..tl.M| ut nil ..n Ml.. Iw. .„ . ,.\-,rt lull lliat II \\nllM lliivr lo I'f , , „ „.. ,ln nl,..,v..iuM^ 7 |"nn,l~ ;.,..■■., :.t a,.pr^Mln:.-.•l^ -I" incri'M-i'l MlHllll ir _ u.iv , ,„ ,|,„ ,,,,, „..,. ,lr-r..,„l,nL: l.-MM,!,. -MMl.l.a til- l-n-l t., 1m SMinr \'\:\<< "I' ilM ^' i\ '" r ' i ,ii .i„. „„„. I : i> - ""■" ■'- ^^•" ;""': „rt,„n,nh „,. .1- u...... - "'" „„.:„„r,..l Tl„. «,™l,M,l >. I V< I"- -"„:,! rl....- J,llial. Dav J.llN.llOO. -n,„ ,„„nl..-- nn,l ,...n f -i..'^.' nunn.l pL.-s u..,. .. .li.-n an,l. ■ ..l... .. ill 'inx (Mir ii> at lln' -:> II lillir. till' lAtn ,,f the Ica>l-M|uarcs m)1uII(>ii> that the ,l„,n.in, M) tak.n for rnu\rmvu<-v ,„„ ...M i ,v. n s„,„»N .n. .- - i f .»' (ilial clcllirllts. MUtM \1. I'l.\< 1 No. I 2 3 4 fi R 7 8 9 \\i p|,:,,p : Vl'lcii'ilV Rpnidiial n-c. 4 5 37 12 75 23 2» 34 81 44 IS 48 OS M 12 54 40 56 ai + 44.R4 47 10 50 IS .•|K •.Ml (IS Jll 74 20 7fiI0 711 711 IVJ 71) + I 2fl . I !-' (I (17 , II '.It , (I ,-,7 - .-,4 - :(■:« - 1 07 Xe.. 10 II U i:i II 15 1ft 17 \Vt. Phaw Vrlciniy Rrsidiial 7 -'<■. ' 18 .-.SOS t :t7 >'7 - 1 no ,--4 35 'Js "♦> 1-0 88 70 12 ■Jft '.)0 + 01 HO ft!) ;t3 SO f 4 9<) 87-20 3S 04 + 5 17 94 ■ 8;< 33-87 + 2 3fi 111 28 at- 9** - 5 04 125 55 33 r.3 - 4 .i8 i:i:i :v.i 40 OH - 01 When tl,c normal pla.cs wor. plo,,..! .- . .Toss-soction papor. preliminary .,,.n..nts Miitin. ... v.lon.v ..urv. fairly w..l. w.-n. ^"^ ^'^ "'^j;; pain.l in the previous .iHermiiuUion, .so..n oh.a.m.l l,v .he aid of Dr. King's (iranhioal method.* .„r, of ChK-f .\M,.,„„„i,.r l..H,H, p -T-'O .,.H .Wrophv.i.al .Io„n,..l XXMI P 12-^- •Rrpnrt I UK .|..( IlKP^c nl'ir HIN \n\ t» I \' HI 79 I'cno.i 1 II) Tit 'liivrt e - 7 • -o /v' Jti J.') km V ,1 1) JIlsilVI SO -, - t IJ Jl km ()bs..rva,H... .■Mua.iuns lor ...l. of ,h- is-.-n.u.l pla-.- u-n. form,.! fn.m tl.r.M. .■l...M.ni> l.v S.l,l.>inu..r's ..,„.v..m-.,. n.. I* In -h.- ..l...rv.,i Muu.,..n. .h. mum,1,. n,„ >>-..n~ Ir tl,- .: • P-n-n.n ,..M..H,1 of in.n. V, as in .h- nunnal pla...>. -r Nu 1 lu-v » N-. ^» .•> ihf iifiiiiiil plaifs. OBSKRVATIDN EylATlOXS. I, ,lu.... ohMTVutioM ...ua.iuns a..u.ain« ,u S-.h^sin^.T-. notation, 1- =5^+r rose 6/V- + K cosu. &c - K . sm c 6u, )r = -A' 6u) = --'i -^ 5w J = - A' :""'.5(= -i':!7i5e 1 -t" T = A /i Ay , ^ P , _ t •Publnuliuuii Allightuy (lljs.Tviitury i, p 33 80 ,,, ,„„,ViinNS ..I- IHK 1...M1M..N ol,>Kl(VvrnHV. n,,. ivMiltiim nunnal (M|iuinnn- arr: 7 -7. V.I 1 .()<,)( f - (»J.r •J7I) 700 Tho M.hitH.n of thoc (■.,uaii<.i.> pv( . tlic unkniixMi-: fdlldwinsi values of the ^ _ ,.. .s71l wlicncc , = - 1'.>'J7 r == - 7 1. ".I) r = -f 1 -2117 5, = + (IICO ^V = - ('7f.-.1 07 = + -^^^l ,.Milt in 111" f..llnuinii values lur th V oleitirnls with is rohici'il fnmi 7.')()4 to TIh'sc ('(irriTiKiiis re the u.rived values „f .he prnl.ahle errors. -,. :..S7 -howinu .ha. .1- prelin,i„arv value, were verv eh.>e to , . :.: -n. . a,., in,.iea,e,l h> -he sn.allue. of the .lilTereuees l.t.ecn ,,. .„„.„. ,..„aiue,l 1. suh>ti,u,u,. u. the ...ervation e,ua,.ons and those ohtained f.o,u the ephemeri. fron. the .orree.ed elements. /■7.V.I/. i:ij:mi-:\ts Period, r=M0-7O davs T->. eiitrieitv. r = n-717 ■ "2'_ I,.n^:itude of Apse, co = :.rifi - ^' '^'-^ Sonu Amplitude, /v^_>7 1' km. ± IM km. P, .,.r,. V-l I) 2.,\s.ur,[-72?. :^ n 0-20 day Pi'r.astron I a--ay:e. i -■!■ < ■ ,■ . •. r <,• (..in - + t'2-.')'.t km. Maximum \'ehHity= 4 M ■ !•• Mimum;n \V!<.eiiy= + 2(i-.^emi-axi:- ,najor. a mu /= 37.171,000. The emnpara.iv.v hi.h value, of -he p..o.,ahle error of the elements i. due prme,pallv ,„ -he al nua, dev.at.oe- he,™ pi.ses .0 an f,.„, „. veloehv eurve d,-awn from these elements and sho.n „. full hne UK M'Ki rmixniMc m\ \iiv ft i \i in. 81 •viatioiis which will Ix' ni'"''' fully in the ;i<'c<>ini):iiiyiiii; lifiun'. '['hcsc ,dual> from the nt,~ervatioM^ were ol,lai.,cd and are ,.ven in the last cohunn hut one ot the ,,,„e of observations. Kron, these residuals, the probable error of a sni^le ,>„^„., ,,,„„ ,„n,es out as .H-.i km. per second. It will bo of uUerest ,o co.npare the probable errors for the different h I HI li 111 S III I. A pfi- III 11^ Nn iif I'ImI.'-. Prnhiililo Krror Silltl'" rlll'n 33 4 20-2 176 10 t 45 3 11 .3 7 3 2 3 9 Then' is verv little ditTerence in the accuracy nf rnea.surement with the different dispersions, th- advantajie seeinin"- to lie with the three-jirisin dispersion and short camera. Fhe advantage of increased linear scale i. offset evidentlv bv increased diffuseness of the lines. (onsidenns the character of the >pectrum an.i th.. presence of some abnormal effect the accuracy may be considered satisfactory. In the velocity curve drawn from these elements the normal places arc represented bv circles. It will be seen that, considerinfi the diffuse character of the spectrum lines, the asreemeut is c.uite satisfactory excepting between phasc-s 70 and bU where- th.-re is a marked double Inunp. As the five normal [.laces m this region hav.- on the averafie four plates each it is evi.lent that this ,leviation must be considere.I to have a probable stence. It is impo>sib: to RiAe a d.'linite cause for this and objective exi abnormal effect. As its period is approximately half the main penod 82 HtBUCATlUNS UK THK DOMINION CUSKKV A H -KV, ..„.. soon. ,..>.. < u— o of ,.ns O.T0.., nn.,ho.. a,o.,. tho u o u,.vo, .,„o appan.,., oM-i.nan ouM l-o . sooo.uU.y ...tuH,..u.o o U ,Ho pon..,l of ,1,0 l.ina..>. AHh.u.h m,o.> an otToo, .U-os no, adnu, of a . U „lo phvsioal oxpla,KU.on, .t was ,i.o„.ln .o.h wiulo ,o doton.uno .. vs Milution, addinsi terms for tlio suporiH.sod uu tho volocity ,l,.n>onts of tlio orl'it on thi^ >upi.oM,ion ,.l,,„u.„ts and .•arryin^i throuiih a loast-.iuan ;unplitudo and pl.aso of a .hnplo >ino ou.-vo curvo, tho folloNvinji ol.i.ioul^ w.to ot.tauio.l. IVriods, 141) -TO .lays and TO:}") days Kccontiicity. '=<'■"' 1 Lunsitndo of Apsi. u; = . ')(>'■ SO Senu-Vmi-litudo Pnaiary, A- = -J9t):5 km, Periastron l'as>a,o, 7 =.I. D. ^.11^)01041 Volority of Sy>ton.. , = +42.t;:? km. Somi-Ami)litudo Socondary, K^A^yl km. Pl„so Asoondiu^ Xodo So..oMdary=J. IX 2,41S,<)G7.42 Maxinnun Volooity Primary S4-71 Combhu.d Si ■ 1 ,,. . X 1 ;,,. l>,iiii'ir\- •'()■().') ('oml)inod 27 0. Mnunnim \olocit> l nmai\ _o Tl.. oumpound om-vo is slu.wn m do,u.d inu. m tho iiKuro, and it .s ,,,, ..vidont that U doo. no, roproson, tho ol.sorvations -H' ■ /^ ^ ' 1. .atisfaotorily ,.,an ,ho sin.ph. -.rvo for, .hilo tho -eon.e.a ts . , . so .,nd i:^() it is poorer at other parts. I ho aN.iage .,,„„larv, ..,„. „„.-il.U. ,.x„ia,.„i„„ uf , l..viau,„„ ,s ,l,e ,„.«„,. „ „, „ . ,„„,.„v,l v....„.i,i..- .owa,,ls , li,a^ b.v .la- l,l,.,ul ..II.H ol .1- , ,„„,„,,.„. ,v,.i„ i„.i.,«- .!..■ . «."■ -' "'"'"•' ■"'■'"'■';' '"""7, ■„, .-. V,., Ma,,.,-s ,„.,,■„ ... . A.,„„a... a „iaa,. ■ . <- - .„, „„i,.. ,„„i;a, ,.. .1...- ..( »-ia"ri. -i-"- -""" -<."-;■•;■•" '" "„„.., I,™». - ,.„*„...« u, 1,™., .a>.. o. . .M.".- •Journal KASC 111 p »7, ,M«r Ai,r . I'J* Tin: >iM;-i"i'ii iii\ viii " i \' '"• S3 i, ..,. la,..,- ^l,uw„ ,1,:,, tl,i^ ua- l-ohahlv r,.- "t a s....,,.] .|„.H,u,n ui,l, ,1,. n-,l,an, UruA .IIVh , -n,. ,„„■„■,„■,. ,~ ,Ik„ -1 n^l .,.,.„■,.„, ,^ pr....,, i„ " -rami. l.M, .. ^.■. .,.. n.:..,K,l.l,. ,...l.,.'. -" ' -, .,,■,,.,., |„. I,...., -rn„.,l. <-. .u ■ 'I- '-'Iv I'l^"- "'"^""'■'' ^" ^ '■'■'""• ,,„. ..,.,„Hl ^,H.r,nnM wa~ .n,:.-..,-..,!, :.,hI nn ,,„„■ .a„anH.l l:.,v -.n. a,.pa,vn, ,,o„l,l„.J. wa^ ul..a...l. Thr -v^ul,^ a, \ryU.^ a,al ,1,. a,,.,npf.l ,„.a..,vs ,„,,,. oiv,.,, i„ ,l,r laM rohunn nl ,h. ,aM. u,' .nr-iuv. all lua,,. ,h. .,.,.o,„la,-v ^prr.nnn i„ iinpu^^il-l. p.Mlmn. Vnv .•xa,„plr. -1- Mr.Mahuy v,.l.,n,v ,n nuv pla,r ami ,1.' pnina,> xrlnn.v i„ ,l,r n.l.r pla,. a, ^ nk... f,ll ..,l,i„ .N^u nr ,h,v,. k,lu„H„v^ uf ,1,. -, li,a-. .UVr ,!„■ N.lur,„.> ul pnn.an a.nl .T.u.la.v n, ..n. ..,r.u-A ,..■ Ih.v a,v ,„ .Muallv nnp,.Ml,l. ,.la„^. pnM.iun. Tu,-, I:m „„„.. la,,. ,naW o„ ,1.^. .,. ...l pla-,- l-u,,.! ,„., ,1,1. „. ,vp.a. -n> -aa.nv. a.al I ~,:u„.lv .1,h,1„ , k. ,val„v u, ,!,.■ ,|,„,,n,„. A< pnxHM.Mv Ma,.,l. pla..^ hav. 1 „ -^p.-allv -rru,..! \u-u: „„1, ,lnv,. ,lilT,.na„ ,li~|.THnn~, ur.v ,hr .„aM„nn„ |wm,,v.. vrlnn,y ^,|,.n ,!„■ ,loul,li„. t' csplanii''! i,\ il„. ,h,,icc (if (lilfcirni lilK" al ,hr l.ick ami ^<■|■k^- ,,l,-rI\alol)r ,.,,inpai ,- n. I- ,„„n,l in ,h- .linVnauv l.HWr.n ,l,r v.lori.v nf ,!„■ ^vM,an ol.ann.l luav -H'',,vam mo,„m +:i'.l-2 „:T:mn i- of ^p.rial ,,„( ,v<, a~ \yurx ..,„■ o,' ,!„■ n.oxin. Mn-an, m Tau.-u^ ,|,.M.nl,r,l hv I'n.f. no.<.* lli^ r.,mp„!.'M .'adial vrlorM.v lo,- ^- Ta.ua i. 1,,.^ kn,. pr,- MToml. 2-1 km. h- ,han ih. (Mlawa vain.. lii^ v^'lon.v vs \r.\~vi{ oil Ku-lncr'- ilrlnininal ion >taiv of the L;;i-oiip. Hi Ihc i-adial ino,ion ol lii,rc oilier In a la,.r (ii^<'U»ion of the Taurii,- Mivani l>y WII.mmiI, * .\,ir"niirnirul .Idunril -WVI. \\. 31. j IVipular Astrooomy XX, p. 3J0. I'l HI II ^ I l,,\- nl nil. l>ii Ml.MtlN iiH-l l;\ Al"!''' 1 I , ,.,1 nil ihr l:i'lial \rliirilii'~ III' ■'^ -'■"'"' in ul.irh Ih- i-inpilli'l N.-'l'l'- •'"' ''^'^"' "" "" , . ,, ,,1 llir -llialll ilrli IIIIIIM'I \'\ « ■mil"" ,,1,1 ,;„, ,,,l,„.iiy nl ir lauri coin.- .1111 ai -..I - Oltawa value. „. ,„..,l,:,l,li.. llii'i'ifniv. llMi llM. Onaua ^.hu■ i- omt ,,.,-,1,1,. lu lAi.laiii till- v^t'iiKitlr ,,1, . ,1 i- 1,1. MV likrlv illir In It ~iTin- ti) iiH' I ;; U,„, |,M, irvil. ami 'li"U~l. i' '^ P""' ,|i„.i,M,iv l.v in-im-i i.l..iiili.'aniin~ii,'uaNrlr„,n, a -.liHi iiiav 1,1. a,-, o,.,.a,.v,.|iM.rM^..- •''■;•-- '^^^^^^^^^^^ hll'UC ir-i'llKll-. 1, i. „f inliT-l I" iii'.n-la"' I""' 'l'^" •'■ '^' \alllr "f till' pi"l"'i' IHilliMll .lilll " t llir ill-laliir i ,t ii||. ci.iiv ri'urnl 1" :r-i'''|''' till' \alili' III „„. ,i,ii.,la. Ill 'Maun . n 0.. ..i.ui.i.i. a li.li' — > .H al„nn 1 ID year-. •n„. .iiulariu l„.uu.,.|, ,1,1. vi.li,|.i.v nu-vi. of '.' Ta.in an-l Hia, -f -he .,,p,„.|.,an:,li.. W- „„ ,„„„ ,„■ :„„„.|.i,iia.,..v |.„„al .vlaMv,. nia.iiiMiil..-. M.-.-- -Vl ,.„ liL... Piaiiii. ami l,.W. nini.i.v, ..... -U. --...nP ula,- ;„, i, ,„.v 1. ,lia, 111- al.n..n.,al ,.1T...-I- a.v pnuM I iiv Uie -an.. ,.., 'm .h I.,.. va,-iaii.i,. .11..- ••'• --all i. i> pii-i'>l- ''- ^ -•- "'"""- ,„,.,nr .,h-rN..Mu„- nii^li. -H-^v " l^""'' ' \M,Ul'l li.' "I !"''■' P.ttrr ii.-liil wiiul'l III' 'I ,, |„, :i vanal)li' -lar ami H AliliM i-li it i- pii--ilil.' .lial a l„:,ii,..l il- a .■.M,-,.liaalil.. .lU...'-- -f a,l.li. Hmal 11 lin.'- i- -ml' :^- '" ,.iv^i I'l lia\-.' tin- ii-lf ■rira \\ ,,,. -rrmv.l. til.' .■haraiMiT ..I' ili- -l."<'tnii ,,,„!,,, ,!„- ;,.|irni....al v^nk 'if .LmliHul valu.' ijuininin.i < tl,-ri\at.i.>. ( ii.awa. 1 rliniaiy, r.M.'). » Vntrciptiysical J'liiiiii'l XNl' ''- niv: ~n:«iH( •-<"'■" ' UNAUV n I \l HI. 85 VF,r...MTveiHVv: ov 0' Ta, ki.