ASTRONOMY. 215 



Variable stars — Coiitiiuu'd. 



. Epbeiiunis of viirialtles of tbo Algol type. Ibid., 8: 40. 



. Catalogue of variable [stars. 14 p. 4to Lynn, 18Sd. Ji'cpr. from : Astroii. 



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

 . Observation of tbe fainter minima of tbo telescopic variables. Astron. 



Jour., 8: 114-117. 



. Some remarkable anomalies in tbe period of Y Cygui. Ibid.. 8: 130, 



. Colors of tbe variable stars. Ibid., S: VS7-U0. 



Clerke (A. M.) Variable double-stars. Obsry., 11: 188. 



EspiN (T. E.) [Discovery of variability of DM. +40'^, 2G94, i;3'> 4-2'"4;5«; +40° 



15'. 9 (1855) 1888, Apr. G.] Astron. Nacbr., 119: 159. 



. [New star in Cyguus.] Ibid., U9: 127. 



. Variable star near 2G Cygiii. Ibid., 119: ^07. 



LoCKYEK (J. N.) Maximuu) of Mira Cell [and its spectrum]. Nature, 38: 021. 



See, also: Compt. Rend., 107: 832. 

 OUDEMANS (J. A. C.) Request to observers of variable stars. Montb. Not., 48: 



85. 

 Plassmann (J.) Beobaclituugen veriinderliclier Sterne angestellt in den Jabreu 

 1881-1888. Mit Erliiuterungen und Notizeu liber die Helligkeit der Planeten 



Venus uud Uranus uud undercr Sterne. 44 p. 8vo. Miinster, 1888 (M. 2) 



Beilase. ziiiu Jaliresl). il. matli.-pli.ys.cliciu. Sect. d. westfiil. Provinzialver. f. "Wissenscli. 

 luid Kiinst, Miiustcr, 1888. 

 Safauik (A.) Zwei neue veriinderlicbe Sterne in deu Sternbildern Cetus nnd 

 Sagittarius. Astron. Nacbr., 119: 109. 



. Licbtwecbsel einer Anzalil von Sternen ans der Bonner Durcbmusterung 



uud ans den Katalogeu rotlier Sterne von Scbjellerup nnd Birmingbam. IG p. 



Bvo. Frag, 1887 (M. 1.20) 



Sawyer (E. F.) [Observations and period of U Ceti.] Astron. Journ , 7: 185. 



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



. Definitive discussion of observations of U Opbiucbi. Ibid., 8: 70. 



. Observations of some suspected variable stars. Ibid., 8: 121-125. 



Venus. 



Elger (T. G.) Visibility of tbe unilluminated part of Venus. Obsry., 11: 198. 

 Lynx (W. T.) Visibility of tiie unilhiniinated part of Venus. Ibid., 11: 155. 

 Venus (Trausit of). 



Harkxess (W.) Value of tbe solar jjarallax dcdueible from tbe American plio- 

 tograpiis of tbe last transit of Venus. Astron. .lour., 8: 108. 

 Vienna Observatory. 



Aunaleu ... G. Bd. Jabrg., 188G. 3-f KiO p. 4 , Wien, 1888. 

 Watson (.James Craig.) [1838-80.] 



CoMSTOCK (G. C.) Biograpbical memoir of James Craig Watson. [Portr.J Sid. 

 Mess., 7: 273-.' 8f!. 

 Williams College Observatoiy. 



SaI'Eord (T. H.) Commemoration of tbe 50t.b anniversary of tbo dedication of 

 the Hopkins Ob.servatory. :?2 p. 8vo. Williamstowii, 1888. J/so ; Sid. Mes.s., 

 7: 430. 

 Wolsingham Observatory. 



Esrix (T. E.) [.Site of new observatory]. Astron. N.aclir., 120 : 191. 

 Yale College Observatory. 



Report for tbe year 1887-'88 ... IG p. 8vo. [New Haven, 1888.] 

 Zodiacal light. 



Barxai!I)(E. E.) Observations of tbe zodiacal couiiterglow. [1883-'87.] Astron. 



Jour., 7 : 18G. 

 SilER.viAN (O. T.) [Connection Ix^twecu tlie zodiacal light and sun-spots.] 

 Nature, 38: .595: 3i»: 12-^. Sir, ulxo: Science, 12: 180. 



