i6j Finn \fi>rr« or Nati'rai. Histoby — Rrpoars, Vol. V. 



a5 t ThrouRh a fund kc'^^p*^*^*'^)' •' ' ' ' ■>' Mr- William J. 



Chalmers, alxnil sixty specimens of cr iuivr l>ccn added to the 



Ch " Up lo this time v.y. lion, which was first 



.  Uv iiic r.iri: Pxv- n'ion of 1900, aa<J received only a few 



.i>iwi... ..-, but thr V '.. this year and the announced inten- 



tion of Mr. Chain;.; ue its active enlarRcment, will result 



in forming a very superior collection. Among the sixrcimens added 

 to the collection this year was a well-formed octahedron of diamond 

 from South Africa nearly an inch in length and weighing ao'/i6 carats. 

 Through the kind ofllccs of Mr. Chalmers also, a donation of 108 sped- 

 m<ms of the copper ores and minerals of the Chuquicamata district in 

 Chile was received from the Chile Exploration Company of Chuqui- 

 camata, Chile. The scries presented includes specimens of oxide ores from 

 the veins, sulphide ores from the veins, and oxide, sulphide and mixed 

 ores from the steam-shovel workings. Chalcocitc, enargite, chalcopy- 

 ritc, boniitc, malachite, cuprite, brochantitc, krOhnkitc and atacamite 

 are among the minerals represented. By thus affording a representation 

 of the ores of one of the most notable copper districts of the world, 

 this scries forms an important addition to the collection. Mr. W. J. 

 Chalmers was also instrumental in securing from the St. John del Rey 

 Mining Company, Ltd., of Morro Velho, Brazil, through Mr. George 

 Chalmers, Superintendent, a scries numbering about forty sp>ectmens, 

 of the ores and rocks of some of the chief gold mines in Brazil. The 

 scries received included typical ores and rocks of the Morro Velho 

 mine, well known as the deepest gold mine in the world; a full repre- 

 sentation of the gold and iron ores of the Congo Sccco and Serro do 

 Curral mines showing especially the peculiar itabirite and jacutinga 

 OTCs; and specimens of gold ores and country rocks from the Cuyaba 

 and Raposos mines. Full descriptions and a map accompanied the 

 specimens. These scries add much of value to the Musctmi ore collec- 

 tions. A large collection containing many attractive specimens, con- 

 sisting chiefly of copper minerals from mines in the Lake Superior 

 district, but including also important spedmens of Arixona copper 

 minerals. Cripple Creek gold ores, etc., was presented by Nathan F. 

 and Alfred F. Leopold. A specimen of sheet copper partly removed 

 from the matrix, a sickle-shaped mass of copixr over two feet in length 

 showing many cr>*stal planes, and an unusual specimen of malachite, 

 are perhaps the most remarkable things in the collection. There are 

 also included specimens of many kinds of occxirrences of native copper, 

 many of them o^-stallized, of calcitc and copper, tdluridcs of gold, 

 arsenides of copper, amethyst, etc. As many of the specimens were 

 obtained from mines or localities no longer accessible, they have an 



