38 BIBLIOGRAPHY OF ASTRONOMY: 1SS7. 



Morrison observatory. 



Publications of the Morrison observatory, Glasgow, Missouri. No. 1 ... by 

 Carr Waller Pritchett. 1885. 7 + 111 p., 6 pi. 4to. Lynn, 1887. 



Munich observatory. 



Seeliqkr (H.) [Report for 1886.] Vrtljschr. d. astron. Gesellsch., 22: 131- 

 135. 



Natal observatory. 



Report of the superintendent, 1886. 26 p. 4to. [n. p., 1887.] 

 Navigation. See, also, Astronomy (Spherical and practical); Sextant. 



Caillau (T.) Instrument servant a la determination de la position du navire 



par deux relevements d'un meme point et I'intervalles, et des problemes qui 



s'y rattachent. il. Rev. d. ohsrio., 2: 138-41. 

 Types de calculs nautiques. Navigation par I'estime et navigation astronomique. 



fol. Paris, 1887. (M.-6.50.) 



Nebulae. See, also. Nova AndromediE. 



BlGOTJRDAN (G.) Nebuleuses nouvelles decouvertes a I'observatoire de Paris. 



Compt. Rend., 105: 926, 1116. 

 Dreyer (J. L, E.) Some nebulas hitherto suspected of variability or proper 



motion. Month, not., 47 : 412-421. 

 VON Engelhardt (B.) Relative E. B. des Nebels G. C. 3258 gegen einen be- 



nachbarten Stern 11. Grosse. Astron. Nachr., 117: 278. 

 Harrington (M. W.) Structure of 13 M. Herculis. il. Astron. jour., 7 : 156. 

 Ingall (H.) Notes on nebulae, il. Eng. mec, 46 : 313. 

 Johnson (R. C.) Photography and 42 M. Obsry., 10 : 99. 

 Leavenworth (F. P.) [Notes on nebul©.] Sid. mess., 6 : 293. 

 Lynn (W. T.) First discovery of the great nebula in Orion. Obsry., 10: 232. 

 MiLLOSEViCH (E.) & Barnard (E. E.) Uber Nr. 14 und 15 des Swift'schen 



Nebelcatalogs Nr. 6. Astron. Nachr., 118: 173. 

 MoucHEZ (E.) Photographie de la nebuleuse 1180 du catalogue general d'Her- 



schel par MM. Paul et Prosper Henry. Compt. Rend., 104 : 394. 

 MuLLER (F.) [Errata in Swift's catalogue no. 5.] Sid. mess., 6 : ^3. 



Corrections to catalogue no. 6 of new nebulae discovered at the Warner 



observatorj'. Ibid., 323 



[Method of observing nebul* at the ^McCormick observatory.] Ibld.y 



361. 

 Roberts (I.) Photographs of nebulte in Orion and in the Pleiades. Month. 



not., 47 : 89-91. 



Photographs of the nebula; 57 M. Lyrce, 27 M. Vul|.ecui:e, the cluster 13 



M. Herculis, and of stars in Cygnus. Ibid., 48 : 29-31. 



Spitaler (R.) tj ber den Ringnebel in der Lever. Astron. Nachr., 117: 261. 

 Sthuve (O.) La nebuleuse pres de c Ononis. 1 pi. Bull. d. I'acad. imp. d. sc. 



d. St. Petersb., 31 : 540-544. 

 Swift (L.) Catalogue no. 6 of nebuls discovered at the Warner observatory. 



Astron. Nachr., 117: 217-222. 



