32 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1918. 



remarkable East African series in the Museum. Of birds alone this 

 contains 10 or more species hitherto not possessed by the Museum 

 and at least 1 genus. 



The Public Library Museum and Art Gallery of Western Aus- 

 tralia, at Perth, supplied in exchange a number of particularly de- 

 sirable mammals, birds, reptiles, and batrachians from Australia, 



Even the Arctic contributed to the additions of the year. Nearly 

 700 crustaceans and mollusks collected by the Canadian Stefansson 

 Expedition to the Arctic, 1913-1916, were presented by the Dominion 

 Commission of Fisheries, Department of Naval Service, Ottawa, in 

 recognition of services rendered by members of the Museum staff itar 

 identifying material. 



During his explorations in British Columbia, Secretary Walcott 

 collected for the Museum a number of large mammals, including a 

 family of moose, which form a valuable addition to the North Amer- 

 ican series of mammals. The activities of various Government agen- 

 cies, mainly the Bureau of Fisheries and the several bureaus of the 

 Department of Agriculture, resulted in much material for the 

 Museum from the United States, representing practically every 

 branch of biology and including particularly large series of grasses 

 and insects. Of North American material mention should also be 

 made of especially well prepared bird skins and skeletons from 

 southern California presented by Mr. Edward J. Brown; marine 

 invertebrates collected in Magdalena Bay by the donor, Mr. C. It. 

 Orcutt ; a killer whale from Florida representing a genus new to the 

 coasts of the United States contributed by Mr. Lawrence S. Chubb, 

 and plants from Alaska and California from Prof. W. L, Jepson. 



Various localities, both domestic and foreign, were represented in 

 an exchange from the Boston Society of Natural History of over 

 k 2,300 crustaceans and mollusks, and some 12,000 specimens of Ameri- 

 can and foreign bird eggs were lent to the Museum by Dr. T. W. 

 Richards, U. S. Navy. 



Geology. — Special attention was paid to building up the collection 

 of minerals heretofore classed as rare earths and rare metals, which 

 have become of importance through the outbreak of the war. A 

 group of exhibition specimens secured mainly through the efforts of 

 Mr, F. L. Hess consists of a large mass of scheelite ore weighing 

 2,G14 pounds, showing the full width of the vein and said to be the 

 largest mass of tungsten ore yet mined; about 100 pounds of molyb- 

 denum-copper ore showing the interesting geological associations of 

 molybdenite; partly oxidized tungsten showing the atmospheric 

 alteration of the common tungsten ore mineral wolframite; scheelite 

 ore replacing limestone and showing unusually large cleavage sur- 

 faces of the ore mineral; a sawn mass of brecciated ferberite ore — 

 the so-called "peanut ore; " a specimen of molybdenite; molybdenite 



