72 ACCOUNTS, &C., OF THE BRITISH MUSEUM. 



and that of Stibnite commenced. Figures have been drawn to illustrate tlie catalogue of 

 the specimens of Proustite and Pyrargyrite. 



A quantitative analysis has been made of the Youndegin meteoric iron ; the iron has 

 been described, together with the minute cubic crystals of graphitic carbon which have 

 been discovered in it. A quantitative analysis of the Nejed meteoric iron has been 

 made, and the iron has been etched and described. A quantitative analysis of the Green- 

 brier County meteoric iron has been made, resulting in the discovery of an enclosed 

 crystal of chromite. In connection with the catalogue of specimens of Proustite and 

 Pyrargyrite, 16 have been quantitatively analysed, 32 specimens of Pyrargyrite have 

 been tested for arsenic, and 49 determinations ol specific gravity have been made. 50 

 duplicate sjjecimens have been labelled. 



161 sections of rocks and crysta's have been prepared. 



10 pieces of meteoric iron have been cut, and seven of these have been faced and 

 polished. 



Departmental Library. 



5G4 separate works (in 572 volumes), have been added to the Library, together with 

 134 memoirs and pamphlets, and 12 atlases, continuations, &c. Of the above 29 are 

 serials, in 229 volumes. 



'Ihe whole of the volumes acquired during the year, including 2,041 plates, have been 

 stamped, registered, and catalogued; 631 titles have been written on book slips. 



453 volumes have been bound during the year. 



Visitors. 



The number of visits recorded as made to the department for purposes of consulta- 

 tion or study is 620. 



Duplicates. 



2,983 duplicate mineral specimens have been given away to 

 tions : — 



Hawick Museum -------- 



Winchester College ------- 



Bristol Museum and Library - _ - _ 



Sheffield Public Museum ------ 



Tweedside Physical and Antiquarian Society, Kelso 

 Hartley Institution, Southampton ----- 



University College, Dundee ------ 



University College of North Wales, Bangor - - - 

 Brighton Museum ---____ 



The Ladies College, Cheltenham - - - - - 



Anderson's College, Glasgow - - - - _ 



Marlborough College Natural History Society 



The School Board of London - _ _ _ _ 



Aske's Hatcham Schools, Hatcham . _ - _ 



Acquisitions. 



1,303 specimens have been acquired during the year 1887, namely, 386 minerals, 908 

 rocks, and eight meteorites. 



These have been registered, numbered, labelled, and placed in the collection. The more 

 important of them are named below : — 



Minerals. 



By Presentation : — 



The " Colenso Diamond," a magnificent symmetrical yellow crystal, weighing 130 

 carats ; South Africa ; and the " Edwardes' Puby," a unique crystal, weighing 163 carats ; 

 by John Ruskin, Esq., m.a. 



Fine specimens of Opal in the matrix ; Queensland ; by Professor N. S. Maske- 

 lyne, m.p. 



Clinoclase ; Namaqualand, South Africa ; by T. Davies, Esq., F.G.S. 



Pyromorphite : Wheal Penrose, Helston, Cornwall ; by B. Kitto, Esq., F.G.S. 



A series of silver ores ; Cascade and Smuggler Mines, Colorado ; by E. Power, Esq. 



A new resin ; Fauldhouse, Linhthgow ; by J. Stuart-Thomson, Esq. 



Magnesite natural and calcined ; Euboea, Greece ; by Dr. G. Harley, r.R.S. 



Namaqualite ; Namaqualand, South Africa; by the Directors of the Cape Copper 

 Mining Company. 



Cuprite ; South Australia ; by the Directors of the English and Australian Mining 

 Company. 



Mineral specimens from a depth of 150 feet; J agersfontein Diamond Mine; by T. 

 Bennett, Esq. 



Khodonite ; 



the follovi 



,'lng in, 



182 



Specimeus. 



185 





35 



195 





5 5 



137 





>> 



140 





55 



180 





', 



127 





55 



200 





53 



80 





55 



54 





55 



247 





53 



76 





53 



1,000 





55 



180 





J5 



