NEBULiE, CLUSTERS, ETC. 13 



D ' Arrest : A. N., lvii, col. 341. [Hind's variable nebula and Nebula 

 Orionis.] 



: A. N, lvii, col. 345. [Variability of H. iv, 4.] 



: A. N, lviii, col. 1. [List of 50 double nebula?.] 



: A. N., lviii, col. 155. [No. 580 zone -|- 30° of Bonn zones. Vari- 

 able nebula.] 



: A. N, lviii, col. 175. [List of nebulae in the Bonn zones.] 



: A. N., lix, col. 13. [On the Mcrope Nebula in the Pleiades ; also 



on a second nebula in this group.] 



: A. N., Ix, col. 377. [On Chacornac's variable nebula near £ 



Tauri ; comet of 1792, II, etc.] 



: A. N., lxii, col. 197. [Ueber den Nebcl H. i, 118.] 



: A. N., lxiii, col. 177. [Observations of some nebula? in Lord 



Hosse's " list of nebulas not found."] 



: A. N, lxiii, col. 180. [List of 215 new nebula?.] 



: A. N, lxiv, col. 125. [On Messier 49; disappearance of a 



nebula observed by Schmidt in this group.] 



■ : A. N, lxv, col. 1. [Second list of new nebula?.] 



: A. N, lxviii, col. 251. [Three missing nebukw] 



: A. N., lxx, col. 337. [Lefebvre's drawing of Orion nebula.] 



. A. N., lxxi, col. 143. [Nebula near Hind's variable.] 



: A. N. , lxxix, col. 3. [Spectral lines of nebula?.] 



: A. N. , lxxix, col. 193. [Spectroscopic observations of two nebula? ; 



G. C. 1532 = n. iv, 45, and Q. C. 4373 = H. iv, 37 ; the par- 

 allax of H. iv, 37, is less than 0.07 // ; changes in spectrum of 

 H. iv, 37.] 



: A. N., lxxx, col. 189. [Spectra of nebula?. Gaseous nebula? belong 



to our system.] 



: [Notice of D 'Arrest's catalogue of nebula?.] Mon. Not. R. A. S., 



xxviii, p. 94. 



: Ast. Jour., vol. 2, p. 130. [New Nebula, a = 285° 58 / 8.2" J = 



+ 0° 4G / 7.7" 1852-0.] 

 Dawes : Mon. Not. R. A. S., viii, p. 31. [Star in nebula of Orion.~\ 

 Democritus : See Plutarch De Placit. Lib. iii, cap. 1. [Views on the 

 milky way.] 



De Morgan: Phil. Mag., L. E. D., 3d ser., vol. 22, p. 241. [Analysis of 

 works of "Wright, of Durham.] 



Denning: A. N., lxxx, col. 299. [Orion nebula. Ten stars in and near 

 the trapezium.] See Salter. 



Derham : Observations on nebulous stars. P. T., 1733, p. 70, and p. t. vii, 

 p. G02. [Catalogue of 10 Nebula? from Hevelius' Prodromus.] 



