206 RECORD OF SCIENCE FOR 1887 AND 1888. 



Nebulae. See, also, Pleiades. 



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



D]{KYER (J. L. E.) New general catalogue of ncbuhe and clusters of stars, be- 

 ing the catalogue of the late Sir Johu F. W. Ilerschel, revised, corrected, and 



enlarged. 237 p. 4to. Loudon, 18rf8 (M. 21.) 



Mom. Koy. Astion. Soc, v. 49, pt. 1. licvicw. — Nature, 37:353; Astron. 'Nacbr., 118: 367. 



GiNZEL (F. K.) Beobachtungen vou Nebelflecken [vom Dec. 1884 bis Apr. 

 188«J. Astron. Nachr., 118 : 321-344. 



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

 enly bodies. 11. Proc. Roy. Soc. 46: 1-93. JZso, Reprint. ^1/so; Nature, 37: 

 58:., 606; 38: 8, 31. .56, 79 (M. 3.70) 



Pickering (E. C.) Detection of newnebuhe by photography. Ann. Harv. Coll. 

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



Roberts (I.) Photographs of the nebulaj M, 31, h 44 and h 51 Andromeda) and 

 M. 27 Vulpecuke. Month. Not., 49 : 65. 



Swift (L.) Catalogue No. 7 of nebulai discovered at the Warucr Observatory. 

 Astron. Nachr., 120: 33-38. 



Vogel (H. C.) Bedeutung 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. 8vo. Brook- 

 lyn, 1888. 



Paper.s Am. Astron. Soc, No. 3. 

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



. Weitere AusbilduugderLaplace'schenNebular-hypothese. Nachtrag. 8-f- 



127 p. ,3 pi. 8vo. Leipzig, 1888 (M. 3) 



Neptune (Satellite of). 



Hall (A.) [Orbit of J 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.) [Orbite dn satellite.] Compt. Rend., 107: 804-810. 

 Nice Observatory. 



Grand <5(iuatorial do Fobservatoire do Nice. il. L' Astron., 7: 447-451. 

 Nieuport Observatory. 



Delpoute (A.) L'observatoire astronomiquo temporaire do Nieuport. Ciol 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. 



Forsteu (W.) Ueber die bisherigen Annahmeu in den Transformations-EIemen- 



ten der as^ronomischen 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 Ji, l'observatoire de Greenwich. 22 p. 8vo. [Bru- 

 xelles, 1887.] 



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



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



Lyrso faites t\ l'observatoire do Washington. 6 p. 12ino. Bruxelles, 1888. 

 liepr./rom: Ann. de I'Obs. roy. do Brux., 1889. 



Objectives. 



CZAPSKI (S.) Beuierkungeu zu der Abhandlung von E. v. Hoogh, "Die spha- 



rische Abweichuug . . ." Ztschr. f. Instrmknd., 8: 203-206. 

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

 ture, 37 : 439. • 



