ASTRONOMY. 185 



Telescopes— Continued. 



Hall (A.) : The images of the stars. Sid. Mess., .5 : 97-100, 



Ranyard (A. C): Note with respect to the invention cf the achromatic tele- 

 scope. Mouth. Not., 46: 460. 

 Servus (H.) : Die Geschichte des Fernrohrs bis auf die neneste Zeit. 135 p. 8vo. 



Berlin, 1886 (M. 2.60) 



Struve (H.) : Allgemeine Beugungs-f5gur in Ferurohren. lop. 4to. St. Peters- 

 burg, 1886 CM. 0.70) 



Mem. Acau. imp. d. sc. de St. Petersb. 78. v. 34, No. 5. 



Young (C. A.) : Large telescopes rs. small. Obsry., 9: 328, 

 : Small telescopes vs. large. Sid. Mess., 5: 1-5. 



Temple Observatory. 



Report . . . 1886. 2 p. 8vo. [n.p.,n. d.] 



Three bodies (Problem of). See, also, Mechanics (Celestial); Orbits. 



Backluxd (O.): Dr. Harzer's Uutersuchuugen iiber eiueu speciellen Fall des 



Problems der drei Korper. 20 p. 8vo. St. Petersburg, 1886 (M. 0.80) 



Repr.from ; Bull. Acad. imp. d. sc. de St. Pfitersb. 31 : 125-138. 

 Harzer (P.) : Untersuchuugen ilber einen speciellen Fall des Problems der drei 

 Korper. 156 p., 1 pi. 4to. St. Petersburg, 1886. 

 M6ui. Acad. Imp. d. sc. de St.-P^tersb., 7. s., vol. 34, No. 12. 

 LiNDSTEDT (A.) : Sur les series trigonometriques dans le probleme des trois corps. 



Bull, astrou., 3: 217-221. 

 Radau(R. ): Quelqnes remarques sur l'61imiuation des na?uds dans lo probh^me 



des trois corps. Bull, astron., 3 : 113-125. 

 Seydler (A.) : Ausdehuung der Lagrangeschen Behandluug des Dreiliorper- 

 Problems auf das Vierkorper-Problem. 20 p. 4to. Prag, 1-86 (M. 0.60) 



Tides. 



Darwin (G. H.) : Dynamical theory of the tides of long period. Proc. Roy. Soc, 

 ^1 : 337-342. 



Time. 



Bileinger (G,) : Die Zeitmesser der antikeu Volker. 78 p. 4to, Stuttgart, 



1886. 



Time (Determination of). 



Dollen (W.) : Ephemeriden auf das Jahr 1887 zur Bestimraung von Zeit nnd 

 Azimut mittelst des tragbareu Durchgang.sinstrumeuts im Verticale des Polar- 

 sterns. 24 + ^7 p. 4to. St. Petersburg, 1886. 



Time (Universal). See, also, Day (Astronomical). 



Christie (W. H. M.): Universal, or world, time. Nature, 33 : 521-523. Also: Pop. 

 Sc. Month., 29: 795-802. 

 Lecture at the Boyal Institution, March 19, 1886. 



[Fleming (S.)] ? Prime meridian time. Nature, 33: 259-262. 



Toulouse Observatory. 



Annales de I'Obsecvatoire de Toulouse, Tome ii, renfermant nne partie des 

 travaux ex6cut6s de 1879 h 1884, sous la direction de B. Baillaud. 45 + 120 + 

 7 + 214 p. 4to. Paris, 1886. 



Turin Observatory. 



DoRNA (A.): Nozioni intorno all' equatoriale. Nota terza. 23 p. 8vo. Torino, 

 1886. 



: The same. Nota quarta. 21 p. 8vo. Torino, 1886, 



: Ricerche per riconoscere se la deviazione della mira meridiana dell' Osser- 



vatorio di Torino a cavoretto dal piano del meridiauo e sensibilimeute nulla 

 come uel 1828. Nota seconda. 12 p. 8vo. Torino, 1886. 



