NEBULA, CLUSTERS, ETC. 39 



Hevelius : Prodromus Astronomiae, 1090. [Has a catalogue of sixteen 

 nebulas and clusters.] 



[ ■ — :] Discovered M. 40. 



Hind: A. N., xxiii, col. 356. [Discovery of nebula.] 



: A. N., xxx, col. 257. [Discovery of nebula.] 



: A. N, xxxv, col. 371. [Discovery of a variable nebula, a = 



4 h ll m 50 3 , d= + 19°8'.J 



: Mon. Not. R. A. S., x, p. 141. [Discovery of a nebula.] 



: Mon. Not. R. A. S., xii, p. 208. [Notice of a oew nebula dis- 

 covered.] 



■ : [Variable nebula in Taurus.] Mon. Not., xxiv, p. 65. 



: C. R., 1850, i, p. 358. [Discovery of a nebula, 12 h 0™ 33 s -f 66° 



0' 30". 1850.0.] 



: Am. Jour. Sci., 2d series, xxxiii, p. 436. [Variable nebula in 



Taurus.] 



: Nature 1876, p. 545, [Ch acorn a.c's variable nebula.] 



Hinrichs : Am. Jour. Sci., 2d series, xxxix, pp. 46, 134, and 276. [Neb- 

 ular hypothesis.] 



Hipparchus: [Discovered G. C. 512, 521, 1681.] See Schultz. A. N, 

 lxvii, col. 4. 



Holden : Report Sec'y of the U. S. Navy, 1875, p. 75. [Report on Trou- 



velot's drawings of nebula?.] 

 : On the nebula of Lyra = M. 57. Mon. Not. R. A. S., xxxvi, 



p. 61. 



: Mon. Not , vol. xxxvii, p. 231. [List of Drawings of nebula of 



Orion.'] See A. N., lxxxix, col. 135. 

 : On supposed changes in the nebula M. 17 — G. C. 4403, etc., [with 



plates.] Am. Jour. Sci., 1876, May, vol. xi, page 341, 3d series. 



: On the proper motion of G. C. 4355. Am. Jour. Sci., 1877, Dec. 



Homer: Odyssey, lib. v, verse 270. [First mention of the Pleiades.] 



Hooke : Micrographia, fol. London, 1665, p. 242. [Discovery of 4th and 

 5th stars in Orion trapezium ?] 



Horner: Die Milchstrasse des sudlich. Himmels u. die kapschen Wolken. 

 1804. Zach. Monat. Con:, vol. 10, p. 220, [has a plate.] 



Hoseman : Discursus de via lactea. 1665. 4°. 



Huggins : A discourse on spectrum analysis applied to the heavenly bodies, 

 8°, Nottingham, 1866. [With photographs of drawings, etc., 

 p. 29 et seq.] German translation by Klinkerfues. 



