34 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1918. 



ing seven groups of crystals more than half an inch in diameter, and 

 as far as known the finest of its kind in the United States. 



Other additions included crystals of tetrahedrite embedded in 

 quartz, galena with crystals of anglesite, gem stones of variscite, 

 opalized shells from the Cretaceous of South Australia, beryl, milky 

 quartz crystals, crystals of selenite, large pyrites, aragonite crystals, 

 besides type specimens presented by Dr. Henry S. Washington, of the 

 Geophysical Laboratory, and minerals described by Prof. A. S. 

 Eakle, of the University of California, and by Dr. W. F. Hillebrand, 

 of the Bureau of Standards. 



Specimens illustrating the geology and ore deposits of the Tintic 

 district, Utah, the basis of Professional Paper 107, of the Geological 

 Survey, by Prof. Waldemar Lindgren and Dr. G. F. Loughlin, were 

 received as a transfer from the Survey, and an interesting series of 

 rocks collected in the Orient by Dr. J. P. Iddings, in 1910. was 

 formally turned over to the Museum. 



Of the increment to the collections of invertebrate paleontology 

 mention should first be made of about 10,000 specimens of Middle 

 Cambrian fossils obtained by Secretary Walcott from the celebrated 

 locality at Burgess Pass, British Columbia, comprising the study 

 and reserve material of this wonderful fauna, the types of which 

 were previously received as were these, by deposit from the Smith- 

 sonian Institution. 



A number of large fossils, mainly corals, and fossiliferous limestone 

 slabs were collected by Dr. Bassler for enlarging the coral reef in- 

 stalled in the exhibition series last year. 



Well preserved invertebrate fossils from the Cretaceous formation 

 of Tennessee constituted the most important addition to the Mesozoic 

 collections. Of interest both for exhibition and study were fossil 

 insects preserved in copal resin, collected by Prof. D. S. Martin by 

 searching the gum copal from the Pleistocene deposits of East 

 Africa shipped in large quantities to the varnish factories in the 

 vicinity of Brooklyn. 



Paleozoic and Mesozoic fossils especially selected to round out the 

 study series of European forms, and ammonites from the Jurassic 

 rocks of France needed in the revision of the exhibit of these forms, 

 were secured by exchange. To the study series were added Tertiary 

 fossils from the Pacific coast, and the Devonian stratigraphic series 

 was increased by a rather complete representation of fossils from 

 the Hackberry and Hamilton groups of Iowa. Small lots of well- 

 preserved Eocene insects and a fossil fish collected in Colorado were 

 of interest because of their rarity. 



The section of vertebrate paleontology secured from the United 

 States Geological Survey, the most important collection of fossil 

 turtle remains ever brought together from the southwestern part of 



