214 RECORD OF SCIENCE FOR 1887 AND 1888. 



Telescopes — Coutiuued. 



Smitji (H. L.) Teloscopes of short focal length. Sid. Moss., 7: '293-296, 3G0. 

 Tennant (J. F.) Note on the defiuitiou of reflecting telescopes, and on the 



images of bright stars on photographic plates. Month. Not., 48 : 104. 

 Todd (D. P.) American telescopes. 4 p. 4to. [Philadelphia? 1888.] 

 Repr.from : Eucyc. Brit. Amor. Reprint. Vol. 23, Appendix, p. 932-930. 



Temple Observatory. 



Seabroke (G. M.) Report . . . 1888. 3 p. 8vo. [u. p., n.d.] 

 Three bodies (Problem of). 



CiiAKLiER (C. V. L.) Ueber eiue mit dem Problem der drei Korper verwandte 



Anfgabe. 18 p. 4to. St. Petersburg, 1888 (M. 0.80. 



Harzer (P.) Argumeuto des Problems der n Korper. Astrou. Nachr., 120: 

 193-218. 

 Time (Determination of). 



13IGELOW (F. H.) Computation of clock corrections. Sid. Mess., 7: 97-100. 

 Time (Standard). 



Bouquet DE laGrye (J. -J. -A.) Note enr I'adoptiou d'uue heure legale en Franco, 



Compt. Rend., 107 : 429. 

 FOREL (F.-A.) L'unitication del'heure: I'heure nationale. L'Astron.,7: 327-333. 

 Laussedat (A. ) L'heure nationale. L'Astron.,7: 454-457. 

 Transit instrument. 



BiGELOW (F. H.) An automatic transit instrument, il. Sid. Mess., 7 : 205-209. 

 BiGOURDAN (G.) Dispositiou qui permettrait I'emploi de puissants objectifs dans 



les observations m^ridieunes. Compt. Rend., lOH : 998. 

 Devaux ( — .) Recherches Bur la forme des tourillons d'nne lunette mdridienne. 



Bull, astron., 5 : 523-532. 

 FoRSTER (W.) Theorie des Durchgangs-Iustrumentes. In his : Studien zur As- 



trometrie, 50-114, 

 Geelmuyden (H.) Collimatiou des lunettes bris^es. Astron. Nachr., 119: 151, 



183. 

 Gruey (L.-J.) Nouvel oculaire pour les observations nidridienues. Compt. 



Rend., 100: 585-587, 

 RjEPSOLD (J.) Durchgangs-Instrument mit Uhrbewegung. Astron, Nachr., 118: 

 305, 



Transit observations. 



GoxESSi.vT ( F.) Quelques erreurs affectant les observations do passages, Comi)t, 

 Rend., 107: 047-650, 



Rayet (G.) Recherches sur les erreurs accidentelles des observations do pas- 

 sages dans la m^thode do I'lcil et de I'oreille. Compt, Rend,, 100 : 1713-1710. 

 United States Naval Observatory. 



Circular relating to the constrnctiou of a new naval observatory. 44 p. 12mo. 

 Washington, 1888, 



Estimate for the purchase of ])hotographic telescope and pointers, and con- 

 struction of buildings for same, for the proposed international project of 

 charting the sky. 4 p. 8vo. [Washington, 1888,] 50th Congr., 2d sess., 

 House of Rep., Ex, Doc, 40, 



REPoiiT of the Superintendent . , , Juno 30, 18S8, 24 p, 8vo, Washington, 

 1888, 



Urania. 



UuAXiA — Volksakadeniie der Naturwissenschaften in Berlin. Sirius, 21 : 84-88. 

 Variable stars. 



CuAx^fDLER (S. C) Period of Algol, Astron, Jom., 7: 105, 177. 



. Oil the observation of the variables of the Algol type. / bid., 7 : 187. 



, New variable of long period. Ibid., 8: 2^. 



