368 Minerals. 



1850. 



Total acquisitions 240, including : 



Two groups of dark-green crystals of epidote on the matrix, 

 from Traversella, Piedmont, Italy : presented by Mr. W. G. 

 Lettsom. 



Two specimens of fluor (" The Couttet rose-fluors ") from 

 Switzerland : presented by Prof. John Ruskin. 



A fine group of pink crystals of apophyllite from Samson 

 mine, Andreasberg, Harz : presented by the Marquess of 

 Northampton. 



Sixty-two crystals of diamond : purchased. 



Spodumene, a large crystal, from Chesterfield, Massachusetts : 



1851. 



Total acquisitions 167, including : 



A very large group of crystals of galena, with rhombohedra 

 of calcite and some blende, from Great Laxey mine, Isle of Man : 

 presented by the Proprietors of the mine. 



Graphite, a mass weighing 32 Ib. (14| kilograms) : presented 

 by Messrs. Pilcher and Sons. 



1852. 



Total acquisitions 62, including : 



A small gold nugget, weighing 516 grains (33 '4 grams), from 

 Queen Charlotte's Island, British Columbia : purchased. 



1853. 



Total acquisitions 67, including : 



A group of crystals of witherite from Fallowfield mine, 

 Hexham, Northumberland : purchased. 



1854. 



Total acquisitions 73, including : 



Several crystals of parisite from Muso, Colombia : presented 

 by Mr. E. W. Marks. 



A colourless, transparent, waterworn mass, weighing 12 Ib. 

 13 oz. (5 '81 2 kilograms), of topaz with cleavage-surfaces, 



