os 00 UD 7 7 •N- 857-858 under “Bossthedesignationofanasterisk(*)signi- publishedtothetotalofsevenhundred. tions willappearasaMemoiroftheNationalAcademy tions No.18. fies thatthevalueistakenfromCincinnatiPublica- delay anditwillbringthenumberofMcCormick which isnowinpressshouldappearwithoutundue of FourHundredandFortyStars.Thevolume of Sciencesunderthetitle“TrigonometricParallaxes 808, 824,840and851.Thedetailsoftheobserva- published inAstronomicalJournal,Nos.778796,803, ; 630 620 628 627 625 624 623 622 621 620 619 618 612 626

617 616 615 614 613 611 610 609 608 607 1926AJ. No. In theTablebelow,incolumnofpropermotions This listofparallaxesisincontinuationthose 1 h h 2 1 7 Leonis,Mean 7 Leonis,Ft. Lalande 7 Leonis,Br. ß Orionis Lalande 15389 X OrionisFt. X OrionisBr. ß Camelop v Aurigœ 39 Tauri v CoronœBor. W. B.10234 W. B.71029 9 Argus Boss 189 y CoronœBor. a Geminorum a Geminorum L Virginis rj Orionis f Orionis Ç Persei d Aurigœ K Persei Star TRIGONOMETRIC PARALLAXESOFFORTYSEVENSTARS, © American Astronomical Society •Provided bytheNASA Astrophysics DataSystem DETERMINED BYPHOTOGRAPHYWITHTHE26-INCHMCCORMICKREFRACTOR 10 14.2 16 18.6 15 19.1 10 14.5 10 14.5 10 14.5 14 17.6 14 10.8 7 38.2 7 28.2 7 28.2 3 47.8 7 47.9 7 47.1 5 52.9 5 44.6 5 35.7 5 29.6 4 54.5 5 29.6 5 9.7 3 59.4 5 19.4 3 2.7 0 47.1 R. A. 1900 THE ASTRONOMICALJOURNAL. + 3950 + 326 + 326 + 3712 + 397 + 952 + 952 + 2023 + 342 + 3039 +30 6 + 2021 + 2021 +60 18 + 2144 + 3135 + 2021 -13 38 -20 +44 29 -13 36 - 229 +60 34 - 819 - 531 Decl. 1900 By S.A.MITCHELL Spectrum 2.7 AOp 4.2 K0 6.9 K0 5.3 GO 6.8 F8 2.0 A0 2.8 A0 2.0 B0 3.7 Oe5 0.3 B8p 4.2 GOp 8.6 K6 4.2 F5 9.2 Map 5.6 B2 3.4 Bl 6.0 G5 4.0 K0 5.4 Ma 2.6 G8 2.9 Bl 5.6 GO 3.8 G5 4.9 F8 and ,/ h 0.342 0.685 0.204 0.204 0.106 0.008 0.012 0.011 0.490 0.011 0.006 0.049 0.237 0.727 0.427 0.347 0.347 0.005 0.013 0.222 0.021 0.240 0.188 relative +0.067^".OOö. interesting binary9ArgusandW.B.10234.The four arethebrightdoublesCastorandyLeonis, mean ofthetwoseriesplatesCastorgive entirely differentfromtheoriginalseries.These latter alsopartiallymeasuredtheplatesonvCoronce publication, fouroftheregionspresentlistare of aGeminorum. published forthesecondtime,photographsbeing Borealis. Dr.HaroldL.Aldenmeasuredtheplates stars numbered617,636,645and647;Dr.P.vande Total Kamp thosenumbered635,642,643and644.The For reasonswhicharestatedintheforthcoming Mr. MichelKovelenkomeasuredtheplateson + .057 + .054 + .007 + .001 + .303 + .303 + .001 + .006 + .001 + .005 + .129 + .002 -.060 + .174 + .013 + .182 -.488 -.172 -.172 -.641 -.018 -.005 -.073 Boss IObserved + .055 + .051 + .069 + .339 + .003 + .151 + .002 + .326 -TOO + .167 -.214 -.047 + .199 -.436 -.167 -.029 -.001 -.026 -.002 -.015 -.607 -.012 -.035 -.075 + .062 + .028 + .011 + .053 + .176 + .025 + .006 + .020 + .010 + .020 + .069 + .025 + .020 + .019 + .020 + .002 + .077 + .012 + .047 + .011 -.016 -.006 + .010 +.061 -.007 Relative ±.009 Parallax 11 10 11 10 11 10 14 12 13 10 11 11 12 8 9 8 8 8 8 9 9 7 9 6 Absolute + .015 + .066 + .057 + .181 + .031 + .028 + .009 + .023 + .013 + .023 + .006 + .017 + .053 + .076 + .030 + .025 + .026 + .014 + .080 + .013 + .064 + .026 -.013 -.003 +2.1 + 1.3 +0.2 + 1.6 +8.0 + 1.6 + 7.7 +3.0 +2.7 + 5.5 + 4.2 +0.9 -0.1 + 3.9 -1.0 -1.2 -0.7 -5.8 -0.3 -0.1 -0.4 M 143 1926AJ 36. . 143M Observations oftheSolarEclipse,1926January14,byT. P. Bhaskaran. Progressive ChangesinMeanLatitude,byRalphE.Wilson. The SolarMotionProblem,byRalphE.Wilson. Leander McCormickObservatory, The CorrectionstotheDeclinationSystemofBoss’Preliminary GeneralCatalogue,byH.Raymond. Trigonometric ParallaxesofFortySevenStars,byS.A. Mitchell. Jan. 14,weremadeattheNizamiahObservatory, which ishoursinadvanceofGreenwichMean Time. Hyderabad. University ofVirginia, 144 653 652 649 651 650 648 647 646 645 644 643 641 642 640 639 638 637 636 635 633 634 632 631 No. Co., Lynn,Mass.Closed,March10,1926. atory, Albany,N.Y.,U.S.A.,towhich allCommunicationsShouldBeAddressed.Price$5.00theVolume. PressofThos.P.Nichols&Son Nizamiah Observatory, January 9,1926. The timesgivenareinIndianStandardTime The followingobservationsoftheSolarEclipse1926 Hyderabad—Deccan, India. h 1 y Ophiuchi A. Oe.21308 A. Oe.25685 47 Cygni Lalande 45755 A. G.Leipzig8693 P Cygni 27 Cygni 51 Pegasi Boss 4838 Lalande 33439 Boss 4837 72 Ophiuchi a Delphini y Cygni Lalande 30271 W. B.16964 v CoronœBor. 1 Aquilœ i Herculis 6 Lyrœ K Cygni £ Draconis © American Astronomical Society •Provided bytheNASA Astrophysics DataSystem Editor, BenjaminBoss,Albany,N. Y.; AssociateEditors:ErnestW.BrownandF.R.Moulton.Published bytheDudleyObserv- OBSERVATIONS OFTHESOLARECLIPSE,1926JANUARY14, Star 20 14.1 20 2.7 20 30.0 23 16.7 22 52.5 21 46.2 21 14.6 20 35.0 23 26.5 19 52.6 19 14.8 19 12.9 18 56.9 18 29.8 18 56.9 18 6.4 18 2.6 17 51.8 17 42.9 16 18.7 17 36.6 16 32.9 16 32.5 R. A. 1900 THE ASTRONOMICALJOURNAL. + 3542 + 3449 + 5311 + 3743 +37 57 + 7539 + 7539 +43 32 + 129 +34 54 +38 28 + 933 + 5837 +20 14 + 1534 - 819 +56 53 -20 15 +31 18 +46 4 + 245 +31 9 +33 56 Decl. 1900 By T.P.BHASKARAN. Magnitude 4.0 KO 4.0 KO 4.5 KO 4.1 KO Spectrum 4.9 Bip 6.7 AO 7.0 AO 9.2 K5p 4.8 K5 5.5 KO 6.4 KO CONTENTS. 3.7 A3 7.6 G5 7.6 Bip 3.9 B8 6.8 KO 3.9 K0 3.7 A0 9.5 K5 5.6 GO 3.8 B3 7.3 F8 5.3 K5 and hms hms hms 0.285 0.494 0.010 0.030 0.014 0.052 0.023 0.318 0.58 0.100 0.015 0.67 0.064 0.126 0.084 0.213 0.76 0.008 0.482 0.59 0.055 1.06 1326.4 3"telescope(Projection)M.K.Bappu 1327.4 15"Equatorial(apertureT.P.Bhaskaran Total ll47.8 Time Proper Motion + 1.052 + .064 + .018 + .019 + .631 -.012 -.232 -.034 -.010 -.022 + .098 + .204 + .064 -.002 -.352 -.062 + .340 -.182 -.027 + .004 -.008 -.010 Right Ascension Boss fObserved / 3 telescope(Projection) glass overeyepiece) stopped to6colored f 1.102 + .003 + .051 + .085 + .022 + .044 + .093 + .623 + .182 + .057 -.237 -.042 -.007 -.030 -.318 -.080 + .335 + .007 -.176 -.054 -.039 -.017 -.004 First Contact Instrument Last Contact + .031 + .006 + .009 + .004 + .009 + .021 + .106 + .030 -.014 + .052 + .004 + .034 + .017 + .041 + .021 + .073 -.006 + .004 + .051 -.003 + .042 + .011 -.006 Relative Parallax 10 11 10 10 11 12 11 10 11 14 11 10 11 10 14 9 9 9 8 7 8 M. K.Bappu Absolute + .012 + .034 + .009 + .012 + .007 + .024 + .033 + .039 + .020 + .110 + .055 + .008 + .045 + .024 + .077 os -.010 + .007 -.002 + .055 + .046 + .016 -.002 N- 857-858 Observer .000 + 3.2 + 0.3 + 1.0 + 7.2 + 0.4 + 6.6 + 6.3 -1.8 -1.2 + 1.3 + 3.7 + 5.0 + 2.1 -0.1 +2.2 +8.2 -2.1 + 5.6 + 1.3 M