SECRETARY'S REPORT 31 



was a group of woods from laticiferous plants on which anatomical 

 research was planned by Mr. Krukoff. Dr. Jose Cuatrecasas gave 

 3,200 specimens which he collected in Colombia. Other gifts included 

 620 excellent specimens of Pennsylvania plants from Mulilenberg Col- 

 lege, Allentown, Pa. ; 850 cryptogams, mostly mosses, from Dr. F. J. 

 Hermann, Adelphi, Md.; and 504 specimens from the University of 

 Alaska. 



Several large collections were received in exchange. A group of 

 845 slides of pollen of African plants was received from Duke Uni- 

 versity through Mrs. Shirlee Cavaliere and 765 slides from the Pan 

 American Petroleum Corp. of Tulsa, Okla., through Dr. Donald W. 

 Engelhardt. Gray Herbarium of Harvard University sent 1,037 

 specimens collected by Dr. L. J. Brass on the Fourth Archbold Expe- 

 dition to New Guinea. Other exchanges included 845 specimens of 

 Asia and eastern Europe from the V. L. Komarov Institute of Botany 

 of the Academy of Sciences, Leningrad, U.S.S.E. ; 888 specimens 

 collected in Mexico by Dr. Faustino Miranda from the Instituto de 

 Biologia, Universidad Nacional de Mexico; and 392 plants of Aus- 

 tralia from the Commonwealth Scientific and Industrial Eesearch 

 Organization, Melbourne. 



Dr. Jolin J. Wurdack collected for the Museum 9,258 specimens in 

 Peru ; Dr. R. S. Cowan and Dr. Thomas E. Soderstrom, 3,370 specimens 

 in British Guiana ; and Dr. "William L. Stern, 439 specimens in Oregon, 

 Wyoming, and Colorado. 



From the U.S. Geological Survey were transferred 801 specimens 

 collected on the Pacific islands by Dr. F. E. Fosberg; from the U.S. 

 Fish and Wildlife Service, 420 plants collected in Alaska by Frank 

 Beals; and from the Agricultural Eesearch Service, Department of 

 Agriculture, 235 specimens collected in Iran and Mexico by Dr. How- 

 ard Scott Gentry. 



Geology. — A total of 3,885 specimens was received in the division 

 of mineralogy and petrology. Among the important gifts are a very 

 fine specimen of legrandite, Mapimi, Mexico, from Bernard T. Eocca, 

 Sr., and an exceptional specimen of f airfieldite, Kings Mountain, N.C., 

 from Carter Hudgins. Outstanding among specimens received by 

 exchange was a collection of cerussite, azurite, and associated minerals 

 from Tsumeb, South West Africa; a crystal of vivianite, 31 inches 

 in length from the Cameroons; and a fine piece of malachite, from the 

 Congo. New species received in exchange were: calumetite, Michi- 

 gan ; angelellite, Argentina ; arsenate-belovite, fersmanite, gerasimov- 

 kite, kupletskite, lomonossovite, and vinogradovite, from the 

 U.S.S.E.; bafertisite, Inner Mongolia; bergenite. East Germany; 

 bonattite, Canada; carobbiite, Italy; cuprorivaite, Italy; hydroames- 



