NEBULiE, CLUSTERS, ETC. 



American Journal of Science : [Silliman's.] 







Amer. Phil. Society Transactions: Vol. VII, p. 105. Mason, E. P., 

 and Smith, H. L. 



American Ass. Adv. Science : 1870. p. 40. Abbe. 



Amsterdam: Tijdsch. van Wlss. en Nat. Wetens. Vol. I, [1848]. p. 7. 



Kaiser, F. 

 Angstrom : Recherches sur le spectre solaire, p. 37. [Duplicity of lines 



in spectrum of nebulae.] 



Allgemeine Geog. Ephemeriden : iv, p. 209. [Olbers ] 



AragO : Astronomie Populaire, vol. i, p. 495, etc. 



: Analyse des Travaux de Sir Wm. Herschel. Ann. d. Bureau 



d. Long. 1842, p. 410. 



: C. R, xiii, p. 450. [Remarks on Rondoni's drawing of nebula 



of Orion."] 



: C. R-, xxvi, p. 50. [Bond's drawing of nebula of Orion.] 



: Edinburg New Phil. Jour. Vol. 33, p. 307. 



Aratus : Diosemcia, ver. 160, [mentions Prcesepe.] 



Argelander : Astronomische Beobachtungen zu Bonn., 4°., Vols, iii, iv, 

 v. Durchmusterung. [Introductions contain data for deter- 

 mining the distribution of stars in space, of the milky way, etc.] 



: Maps in Uranom. Nova, give 19 nebulae, etc., visible to naked eye. 



