164 ACCOUNTS, ETC., OF THE BRITISH MUSEUM. 



the " Mineralogical Magazine and Journal of the Mineralogical 

 Society " by members of the Staff of the Department : — 



1. Note on a connexion between the molecular volume 



and chemical composition of some crystallographi- 

 cally similar minerals : by G. T. Prior, M.A., F.G.S. 



2. Serendibite, a new borosilicate from Ceylon : by G. T. 



Prior, M.A., F.G.S. , and A. K. Coomaraswamy, B.sc, 



F.G.S. 



■ 3. Contributions to the Petrology of British East Africa. 

 Comparison of volcanic rocks from the Great Rift 

 Valley with rocks from Pantelleria, The Canary 

 Islands, Ascension, St. Helena, Aden, and Abyssinia : 

 by G. T. Prior, M.A., F.G.S. 



4. Some new crystal-forms on krennerite : by G. F. 



Herbert Smith, M.A., F.G.S. 



5. Mineralogical notes on Western Australian Tellurides ; 



the non-existence of " Kalgoorlite " and " Cool- 

 gardite " as mineral species: by L. J. Spencer, M.A., 

 F.G.S. 



6. Crystalline forms of carbides and silicides of iron 



and manganese ("ferro-manganese," &c.) : by L. J, 

 Spencer, m.a., f.g.s. 



7. On the advantages of the gnomonic projection and 



its use in the drawing of crystals ; (with a table to 

 facilitate its employment) : by G. F. Herbert Smith, 



M.A., F.G.S. 



8. A (third) list of new mineral names : by L. J. Spencer, 



M.A., F.G.S. 



Miscellaneous. 



Owing to the absence of Mr. G. Murray by reason of 

 illness, it was arranged that Mr. Fletcher should take 

 temporary charge of the Department of Botany, and he 

 accordingly acted as keeper of the Departments of Mineralogy 

 and Botany for the space of four months. 



Much time has been spent in the examination of the 

 archives of the Mineral Department, with a view to the pre- 

 paration of Historical Notes relative to the collection. These 

 are now in print, and include chronological lists of the more 

 important acquisitions of minerals, rocks and meteorites, 

 respectively, from the time of foundation of the Museum 

 (1753) to the end of the year 1902. In this connection, a slip 

 catalogue has been made of the more noteworthy specimens : 

 lists have been made of those w^iich were figured or described 

 in J. Sowerby's "British Mineralogy" (1804-1817) and 

 "Exotic Mineralogy " (1811-1820) and in other early works; 

 the specimens referred to have been identified and labelled 

 accordingly. References to papers in which various rock- 

 collections have been described have been given in the 



