Geological Society, 309 



are also noticed. The progress of mining work in the Bisbee 

 Quadrangle from about LST.'J to 189!) is given as having been j)ro- 

 duetivo of about ;i>SO, 113,851 pounds of " black '' (crude) copper. 



The lucid and scientific descriptions of local features, facts, and 

 conditions render this volume a valuable adjunct to mining litera- 

 ture, and its vahie is enhanced by a somewhat sanguine but quite 

 cautious treatment of the probabilities of good pyrites being found 

 at certain localities and levels in neighbouring rock-formations. 



PROCEEDINGS OF LEARNED SOCIETIES. 

 GEOLOGICAL SOCIETY. 

 June 22nd, 1904.— J. E. Marr, Se.D., F.R.S., 

 President, in the Chair. 



The following communication was read: — 



' The Tertiary Fossils of Somaliland, as represented in the 

 British Museum (Natural Museum).* By Richard Bullen Newton, 

 Esq., F.G.S. 



Since the publication, in 1900, of Prof. Gregory's paper, founded on 

 specimens in the Natural History Museum, mostly collected and pre- 

 sented by Mrs.Lort Phillips, the National Collection has been enriched 

 by further series of fossils : the Donaldson-Smith Collection, and 

 one presented by Major R. G. Edwards Leckie. The new material 

 is, generally speaking, better preserved than that previously dealt 

 with. The large Lucinidai and specimens of Campanile (previously 

 considered as JS^erincra) are very typical of Eocene rocks generally, 

 and they agree with the foraminifera in the Somaliland Limestones 

 in supporting the reference of these rocks to this period. The 

 matrices of these limestones correspond with those surrounding the 

 corals described by Prof. Gregory as belonging to the l^radu and 

 Debar Limestones. Two limestones seem to be represented in the 

 collections — an upper, massive and chcrty, often coloured reddish- 

 brown externally ; and a lower, of less chcrty character and lighter 

 colour. The limestones appear to be capable of correlation with 

 those of the south-eastern corner of Arabia, as well as with those of 

 Sind and Cutch ; they can also be traced in connection with the 

 Eocene areas of Egypt and other regions of North Africa, through 

 Europe to the Paris Basin, and so to the Bracklesham Beds of England. 

 The new collections contain some older fossils, but they are not con- 

 sidered in the present paper. 



A review of the literature of the subject is given, and the Author 

 then proceeds to the description of species of gasteropods, lamelli- 

 branchs, echinoids, and corals. Six new species are described and 

 named, and sixteen species or varieties described but not named. 

 An account of the foraminiferal structures of the limestones follows, 

 and the paper closes with a list of the known Tertiary fossils from 

 Somaliland. 



Ann, dc Mag. N. Uist. Ser. 7. Vol. xiv. 21 



