DEPARTMENT OF MINERALOGY. 197 



recently described by the donor : by Dr. Waldemar T. 

 Schaller. 



Cassiterite of various forms from Federated Malay States : 

 Toy J. B. Scrivenor, Esq. 



Precious opal in geyserite from the Great Geyser, Iceland : 

 b»y F. H. Sikes, Esq. 



Calcite, dolomite, and orthite collected by the donor in 

 :North Wales : by W. Campbell Smith, Esq. 



Luzonite from the Phillipine Islands : by Dr. Warren D. 

 Smith. 



Belgian marbles, a set of thirteen polished slabs to represent 

 the different trade varieties : by the Societe Anonyme de 

 Merbes-le-Chateau, Belgium (through Marcel Leclerq, Esq.). 



Chalcedony nodules enclosing water (" enhydros ") from 

 San Eugenio, Uruguay: bv Lieut. J. C. Johnstone Soutter, 

 R.N. 



Gold in quartz from Santiago, Chili : by Percy Stevens, 

 Esq., and Ciro Makin, Esq. 



Concentrates panned from river sands in Southern Nigeria, 

 by P. A. Talbot, Esq. 



Cassiterite, a large crystal from Otavi, German South-West 

 Africa : by Percy C. Tarbutt, Esq. 



Calcite from Patterdale, Westmoreland : by T. Thornton, 

 Esq. 



Cassiterite from Northern Nigeria : bj'' A. Stanley Williams, 

 Esq. 



Gold in serpentine from Porcupine, Ontario : by Ernest 

 Williams, Esq. 



Chalcedony nodules enclosing water (" enhydros ") from 

 Uruguay : by Dr. George C. Williamson. 



Calcite, marcasite, and iron-pyrites from Fifeshire : by 

 James Wright, Esq., Junr. 



By Exchange : 



Various minerals collected in Madagascar by Prof. A. 

 Lacroix and described by him, including : — imerinite (a new 

 variety of soda-amphibole), rhodizite, noumeite, tourmaline, 

 corundum, apatite, autunite, spodumene, microcline, lepidolite, 

 zinnwaldite, ctypeite, and beryl. 



Model of a large diamond (the " Estrella de Minas") found 

 in Minas Geraes in 1911. 



By Purchase : 



175 choice specimens specially selected from the Walker 

 Collection (see p. 194), including : — crystallized gold from 

 Colombia and Brazil ; argentite from Mexico ; bournonite, a 

 large twinned crystal from Machacamarca, Bolivia ; pyrargyrite 

 from Andreasberg and Freiberg ; polybasite, a group of very 



