206 KECORD OF SCIENCE FOR 1887 AND 1888. 



Nebulae. See, also, Pleiades. 



Common (A. A.) Photographs of nebulfp. Obsry., 11 : 390-394. 



DfJEYER (J. L. E.) New general catalogue of nebiahe aud clusters of stars, be- 

 ing the catalogue of the late Sir John F. W. Hcrschel, revised, corrected, and 



enlarged. 237 p. 4to. London, 1888 (M. 21.) 



Mem. Koy. Astron. Soc, v. 49, pt 1. Review. — Nature, 37 : 353 ; Astron. Nacbr., 118 : 367. 



GiNZEL (F. K.) Beobachtuugen von Nebelflecken [vom Dec. 1884 bis Apr. 

 1886 J. Astron. Nachr., 118 : 321-344. 



LocKYEK (J. N). Suggestions on the classification of the various species of heav- 

 enly bodies, il. Proc. Roy. Soc. 46: 1-93. ^Zso, Reprint. Also: Nature, 37: 

 .585, 606; 38: 8, 31, 56, 79 (M. 3.70) 



Pickering (E. C.) Detection of new uebuhe by photograxjhy. Ann. Harv. Coll. 

 Obsry., 18: 113-117 (v. 18, no. 6). Also, Rcpriut. 



Roberts (I.) Photographs of the nebuhc M, 31, h 44 and h 51 Audromedse and 

 M. 27 Vulpecula;. Month. Not., 49 : 65. 



Swift (L.) Catalogue No. 7 of nebulae discovered at the Warner Observatory. 

 Astron. Nachr., 120: 33-38. 



Vogel (H. C.) Bedentung der Photographic zur Beobachtung von Nebelflecken. 

 il. Astron. Nachr., 119: 337-342. 

 Nebular hypothesis. 



COAKLEY (G. W.) On the nebular hypothesis of La Place, 85 p. Bvo. Brook- 

 lyn, 1888. 



Papers Am. Astron. Soc, No. 3. 



Kebz (F.) Beitrag zur Nebular hypothese. Sirins, 20: 265; 21: 10,34. 



. WeitereAusbildungderLaplace'scheuNebular-hypothese. Nachtrag. 8+ 



127 p., 3 pi. Bvo. Leipzig, 1888 (M. 3) 



Neptune (Satellite of). 



Hall (A.) [Orbit ofj the satellite of Neptune. Astron. Jour., 8 : 78. 

 Newcomb (S.) Note on the [orbit of the] satellite of Neptune. Astron. Jour., 



8: 143. 

 TissERAND (F.) [Orbito du satellite.] Compt. Rend., 107: 804-810. 

 Nice Observatory. 



Grand dijuatorial de I'observatoire de Nice. il. L' Astron., 7: 447-451. 

 Nieuport Observatory. 



Delportk (A.) L'observatoire astronomique tomi)orairo do Nieujiort. Ciel et 

 Terre, 9 : 423-429. 



North Carolina University Observatory. 



Love (J. L.) First, college observatory in the United States. Sid. Mess., 7 : 417- 

 420; Nation, 47: 131. 

 Nutation. 



Forster (W.) Ueber die bisherigen Annahraen in den Transformations-Elemen- 



ten der astronoinischen Ortsangaben. In his : Studien zur Astrometrie, 1-49. 

 Niesten (L.) Influence de la nutation diurne dans la discussion des observa- 

 tions de y Draconis faites ;\ l'observatoire de Greenwich. 22 p. 8vo. [Bru- 

 xelles, 1887.] 



Bepr. from: M6m. cour. publ. pnr I'Acad. roy. de Belg., 1887. 



. Influence de la nutation diurne dans la discussion des observations de a 



Lyr» faites :\ I'observatoire de Washington. 6 p. 12mo. Bruxelles, 1888. 

 Repr. from : Auu. de I'Obs. roy. de Brux., 1889. 



Objectives. 



CzAPSKi (S.) Beuierkungen zu der Abhandlung von E. v. Hoegh, "Die spha- 

 rische xVbweichung . . ." Ztschr. f. lustriuknd., 8: 203-206. 



Grubb (H.) [Objectives adapted to either photographic or other work.^ Na- 

 ture, 37 : 439. 



