A.STKONOMY 175 



Moon — Continued. 



Sapokktti (A.): Metodo universale per iscoprire spediamente gl' istanti do na- 

 Bcere e del tiamoutaie deila luna in qnalsiasi luo};o d 'Italia. 1:3 p. 4to. Bo- 

 logna, 1H8G. 



Weixek(L.): Zeichuungeu von Mondkratern und Mondlandschaften. A«trou. 

 Beob. zu Prag. App. zum 45. Jalirg., p. 59-69. 



Mo-sco-w Observatory. 



Annalks do rObservatoiro do Moscou. Publides par T. Bredichin. S6rie 2, v. 

 1, livraison 1. 118p.,2pl. 4to. Moscou, 1886 (M. 6) 



Natal Observatory. 



llErouT of tlie superintendent . . . 1885. CO j). 4to. u. p. [1880.] 



Nebulae, p* 101. See, aho, Pleiades. 



VON GoTHAKD(E.): [Photographing a faint star in the Ring nebula iu Lyra.] 



Astron. NacLr., 115: 221, 303. 

 Stone (O.): List of nebulas observed at the Leauder McCormick Observatory 



and supposed to be new. Astron. Jour., 7 : 9-14. 



: The same. Second list. Astron. Jour., 7: 57-61. 



Stone (0.) and Leavenworth (F. P.): [Observations of the] Nebula of Orion, 



1885. 43 p., 3 pi. 4to. Univ. of Va., 1886. 

 Pub. McCormick Obsry., v. 1, pt. 3. 

 Swift (,L.) : Catalogue No. 3 of uebuliu discovered at the Warner Observatory. 



Astron. NacLr., 115 : 153-158. 



: The same. No. 4. Astron. Nachr., 115 : 2.57-262. 



: The same. No. 5. Astron. Nachr., 116 : 33-38. 



Tempkl(W.) Ueber Nebelflecken . . . 1876-79 . . . zuArcetri. 28 p. 4to. Prag, 



1886 (M. 3) 



Neptune (Satellite of), p* 139. 



Martii (A.): Ephenieris of the satellite of Neptune. Month. Not., 46 : 504-507. 



Neuchatel Observatory. 



Kapport du directeur . . . 1885. 32 + 27 p. 12mo. Locle, 1886. 



Nutation, p* 103. 



FoLiE (P.): Demonstration jiratique del'existencede la nutation diurue. Compt. 

 Rend., 103 : 1171-1173. 

 Objectives. See, also, Spiierometer. 



Berger (C. L.) : Apparat zur genauen Bestininiung der Brennweite von Objectiv- 



gliisern. il. Ztschr. f. Instrmkud., 6 : 272-276. 

 Harzer (P.) : Ueber eiu dreitlachiges uach Hcrru Scheibner's Principien berech- 



netes Objectiv. Astron. Nachr., 115: 241-252. 

 Laurent (L.): Sur I'exccution des objectifs pour instruments de precision. 



Compt. Reud., 102 : 545-548. 

 Schroder (H.) : Ueber die den bekannten Doppelobjectiven anhaftendeu Uebel- 

 stilnde und eine neuo davon freie Liusencombiuation flir grosse Refractoreu. 

 Ztschr. f. Instrmkud., 6:41-46. 

 Observations (Combination of). See, also, Least squares. 



Newcomk (S. ): A generalized theory of the combination of observations, so as to 

 obtain the best result. Am. J. Math., 8 : 343-366. 

 Jlev. by LiJROTH (J.) : Vrtljschr. d. astron. Geaellscb., 21: 272-276. 

 JRey. Obsry., 9: 370. 



Observatories, p* 139. 



Jaiiresbeuichte der Sternwarte fiir 1885. Vrtljschr. d. astron. Gesellsch., 



21 : 69-150. 

 Lancaster (A.) : Liste g<'?norale des observatoires et des astrononies, des sociot^s 



et des revues astiouomi(i| lies. 114 p. 12mo. Bruxelles, 1886 (M, 1.50) 



