rv- 



LIST OF FIGURED NEBULA. 



A large portion of the following list of drawings of nebula; is 

 taken from Sir John Herschel's " General Catalogue of Nebulee 

 and Clusters of Stars," p. 40, Phil. Trans., 1864, part i. It has 

 been attempted first to correct his list, which as printed, contains 

 many errors,* and second to bring it up to the present time as far 

 as possible. In an attempt of this kind there are necessarily many 

 omissions, and the writer solicits corrections and additions to the 

 list. By the courtesy of Mr. Lassell, Mr. E. B. Knobel, Dr. 

 H. C. Vogel, Mr. Ellery, Rev. T. W. Webb, Dr. Doberck 

 and others, I have been able to include in this list a reference «to 

 some important drawings which are not yet " published ;" in par- 

 ticular a long and valuable series of photographs of star-clusters 

 by Dr. Rutherfurd, which I have given separately, as well as a 

 great number of southern star-clusters photographed by Dr. B. A. 

 Gould, and a list of drawings by M. Trouvelot. 



The references to the works cited are given below : it is to be 

 noted that the drawings of Dunlop are omitted for reasons given 

 by Sir John Herschel, (op. tit, p. 40,) as are those in the Philosoph- 

 ical Transactions, by Sir Wm. Herschel. For similar reason the 

 drawings in Smyth's Celestial Cycle are omitted. 



* In Herschel's list the references to his drawings of 1833 are to the 

 plates in his own paper, beginning with plate i. In the Phil. Trans, for 

 1833, Herschel's plate i. is plate ix. I have, however, seen a separate 

 copy of this paper in which the steel plates were numbered from i. on ; it 

 has seemed best to refer to them as they stand in the complete volumes. 



75 



