I 



BIBLIOGRAPHY OF ASTRONOMY: 1887. 31 



Harrow^ observatory (Tupman's). 



[Report for 1886.] Month, not., 47 : 161. 

 Harvard college observatory. 



Annals . . . vol. 17. The almucantar: an investigation made at the observatory 

 in 1884 and 1885, by S. C. Chandler, jr. 9 + 222 p., 1 pi. 4to. Cambridge, 

 1887. (M. 18.) 



Annals . . . vol. 18, [nos. 1 and 2.] 27 p. 4to. [Cambridge, 1887.] 



No. 1 : Magnitudes of stars employed in various nautical almanacs. No. 2 : Discus- 

 sion of the Uranometria Oxoniensis. 



Boyden fund [circular no, 1]. 3 p. 4to. [Cambridge, 1887.] 



Same. No. 2. Meteorological observations. 6 p. 4to. [Cambridge, 



1887.] 



Boyden fund and preliminary experiments in Colorado. Sc. Am. sup., 9715. 

 [Description of the instruments and of the methods of astronomical photogmphy 



at Harvard college observatory.] il. Sc. Am., 57 : 239, 278. 

 Draper (Henry) memorial. First annual report of the photographic study of 



stellar spectra . . . [by] E. C. Pickering. 10 p., 1 pi. Cambridge, 1887. 



^Zso.- Mem. soc.spettrscp. ital., IG: 93-98. Also, Bev.: Ohsry., 10 : 231. AUo : Nature, 

 36: 31,41. 



Report (42d Annual) of the director . . . E. C. Pickering . . . Dec. 2, 1887- 

 12 p. 8vo. Cambridge, 1887. 

 Helsingfors observatory. 



DoNNER (A.) [Report for 1886.] Vrtljschr. d. astron. Gesellsch., 22 : 115-117 

 Hereny observatory. 



VON GOTHARD (E.) [Report for 1886.] Ibid., 118-120. 

 Herschel (Sir William) [1738-1822]. 



Chambers (G. F.) [Note concerning his life at Bath.] Obsry., 10 : 166. 

 Hong Kong observatory. 



[Report for 1886.] Month, not., 47 : 171. 

 Illumination. 



Dreyer (.J. L. E.) Electric illumination of the Armagh refraotor. Month, 

 not, 47: 117. 



Stone (O.) Telescopic illumination. [Electric] Sid. mess., 6: 73. 

 Instruments. See Chronometers ; Clocks ; Circle-divisions ; Equatorial ; Illumina- 

 tion ; Objectives. 

 Interpolation. 



Radau (R.) Sur un probleme d'interpolation. Bull, astron., 4 : 515-519. 



TniELE (T. N.) Ausgleichung und Interpolation von Zeitbestimmung. Vrtljschr. 

 d. astron. Gesellsch., 22 : 302-313. 



Weyer (G. D. E.) Interpolation bei periodischen Functionen. Ibid., 292. 



Interpolation fiir die Mitte bei periodischen Functionen. Astron. Nachr., 



117: 31.3-322. 



lovya college observatory. 



[New observatory at Grinnell, Iowa.] Sid. mess., 6: 322. 



