372 Minerals. 



1862. 



Total acquisitions 1074, including : 



Numerous so-called artificial crystals, prepared by Dr. Carl 

 von Hauer, of Vienna, and shown in the Austrian Court of the 

 Exhibition which was held in London in the year 1862 : pre- 

 sented in the same year. 



A series of specimens of turquoise from Wadi Maghara, 

 Arabia Petrsea : presented by Major C. Macdonald. 



A sharply developed, perfectly transparent and colourless, 

 cube of salt (halite) on the matrix, from Wieliczka, Galicia, 

 Austria : presented by the Austrian Government. 



A large mass of green turquoise with smooth, round surfaces, 

 and a large crystal of ruby spinel : purchased. 



Fine crystals of dioptase on the matrix, from Kirghiz Steppes, 

 Siberia : purchased. 



1863. 



Total acquisitions 595, including : 



Specimens of chalcedonic minerals from Uruguay : presented 

 by Mr. W. G. Lettsom. 



A very large, water-worn and polished mass of jade, weighing 

 1156 Ib. (524 kilograms), from Battugol, Irkutsk, Siberia : 

 purchased. 



A group of large cubes of fluor of a bluish-green colour, with 

 zonal bands of colour ; some faces are partly coated with 

 pyrites ; from Menheniot mines, Cornwall : purchased. 



1864. 



Total acquisitions 617, including : 



A large mass of graphite from the Alibert mine, near 

 Battugol, Irkutsk, and other Siberian specimens : presented by 

 Mr. Iv. P. Alibert. 



A twinned crystal of Iceland spar, bounded by numerous 

 faces, and weighing about 3 cwt. (150 kilograms) : purchased. 



A group of large cubes of greenish fluor, some faces being 

 encrusted with crystals of calcite ; from Menheniot mines, Corn- 

 wall : purchased. 



A group of twinned cubes of argentite; [this specimen, 

 having been protected from the light, has retained its bright 

 lustre] ; from Himmelfahrt mine, Freiberg, Saxony : purchased. 



