ASTRONOMY. ^^'^ 



Variable stars-Coutiimed. ,^., o .n 



Epbemeiis of variables of tho Algol type. Zbirf., 8: 40. 



; Catalogue of variable istais. 14 p. 4to Lyuu, 18d8. Bepr. from : Astvou. 



Jour , 8: 81-9G (Nos. 179-180). 

 Observation of tbe faiuter miuima of the telescopic variables. Astrou. 



_^"' Sou'ie remarkable auomalies in tbe period of Y Cygui. Ibid., 8: 130. 



' Colors of tbe variable stars. /6id., 8: 137-140. 



PTFRivErA M.) Variable double-stars. Obsry., 11 : 1S8. 



SpCcrE-) [Discovery of variability of DM. +40°, 2G94, 13" 4-2"'43.; +40^ 



15'.9 (1855) 1888, Apr. 6.] Astrou. Nacbr., 119: 39. 



[New star iu Cyguus.] Ibid., 119: 127. 



__. Variable star uear 20 Cygui. /6W., 119: 307. 



LOCKYEU (J. N.) Maximum of Mira Celi [aud its spectrum]. Nature, 3ti. b.l. 



,See, aiso; Compt.Eeud., 107: 832. .,, , ,r ,i, M„f aa- 



OUDEMANS (J. A. C.) Request to observers ot variable stars. Month. Not., 48. 



Pr'^f;sM ANN (J ) Beobacbtuugen verauderlicber Sterne augestellt in den Jahren 



i?81-l"I Mit Erliiuter^^ uud Notizen Uber die Helligkeit der Planeten 



Venus und Uranus undauderer Sterne. 44 p. 8vo. MUnster 1888. .(M .) 



Beilago. zum Jabtesb. d. matb-pbys-chc. Sect. d. westfal. Provmzialver. f. W.s.onsch. 



und Kunst, Miiiister, 1888. , 



Safaiuk (A.) Zwei neue veraaderliche Sterne in den Sterubildern Cetus nnd 



Sa"-ittarius. Astron. Nachr., 119: 1C9. 



" Lichtwechsel einer Auzahl von Sternen ans der Bonner Durcbmusterung 



und aus den Katalogen rotber Sterne von ScLjellerup und Birm.ngham^^ IG^p. 



8vo. Prag, 1887 '* - ijr 



Sawyer (E. F.) [Observations aud period of U Ceti.] Astron. Journ., / : I8o. 



[Observations and period of T Vulpecubi']. Ibid., 8: 5. 



. Definitive discussion of observations of U Ophiuchi. Ibid., 8 : /O. 



. Oljservations of some suspected variable stars. Ibid.,S: 121-12o. 



^^ "elgkk (T. G.) Visibility of the uniUuminated part of Venus. Obsry. 11 : 198. 

 LYxXN (W. T.) Visibility of tbe uniUuminated part of Venus. Ibid., U : loo. 



^^TviIxESS OV.^i Value of the solar parallax deducible from the American pho- 

 tographs of the last transit of Venus. Astron. Jour., 8 : 108. 



Vienna Observatory. 



Aunalen ... 0. Bd. Jahrg., 1880. 3+160 p. 4-\ Wieu, 18&8. 



"Watson (James Craig.) [1838-'80.] ro ^♦,. i cji,l 



C<)MSTOCK(G.C.^ Biographical memoir of James Craig Watson. [Porti.J S.d. 



Mess., 7: 273-286. 



Williams College Observatoiy. «• fi..x ,l...li...,tion of 



Safkokd (T. H.) Commemoration of the .50th anniversary of the ded cat. on ot 

 the Hoiiins Observatory. 32 p. 8vo. WilUamstown, 1888. J /.o : S.d. Mess., 

 7: 430. 

 Wolsingham Observatory. loo-ioi 



Esprx (T. E.) [Siie of new observatory]. Astron. Nachr., 120 . Ul. 



Yale College Observatory. i^um 



RKPc.KT for the year 1887-'88... 16 P- ^^^vo. [Ncnv Haven, 1..8n.] 



Zodiacal light. ria..o-i MT ^ Action 



BAKNAia> (E. E.) Observations of the zodiacal couuterglow. [18-.?- 8. .] Astiou. 



Sli^Ix (a'r.) [Connection between the zodiacal light and sun-spots.] 

 Nature, 38: 595: 3'J : 12S. *<r, nho : Scieuee. 12: 1^0. 



