vs Pops 
The following Field Assistants were appointed in June: Don B. 
Creager, for duty at Babylon, N. Y.; George E. Burch and Arthur J. Haas, 
jr., for duty at New Orleans, La.; and T. R. Hansberry, for duty at Sum—- 
ner, Wash. 
Dr. H. H. Darby, Mrs. Darby, and Dr. BE. W. Emmart, of the Mexican 
fruit worm laboratory at Mexico City, resigned effective June 30. 
C. P. Clausen, who left Washington last November for the Far East 
to continue his search for parasites of the citrus black fly, arrived in 
Havana, Cuba, on June 3 with a shipment of parasites, which will be lib- 
erated there. On May 31 Mr. Clausen inspected the infestations in Pan— 
ama, where colonies of one of the parasites, Eretmocerus serius Silv., 
had been liberated in January, and reports that whereas at the time of 
liberation the trees were heavily infested, now citrus is almost entire-— 
ly free from the black fly. Additional parasitic material will be sent 
to Panama from Cuba. Mr. Clausen has been engaged in collecting these 
parasites in the Far East since the spring of 1929. 
Dr. F. S. Bodenheimer, authority on citrus insects in Palestine, 
visited the Lindsay, Calif., office of the Bureau June 30. Dr. Bodenheimer 
desired to discuss with E. A. McGregor the latest developments in the 
control of insects with finely divided sulphur dusts. He was accompanied 
to Lindsay by R. S. Woglum, Entomologist for the California Fruit Growers 
Exchange. 

LIBRARY 
Mabel Colcord, Librarian 
NEW BOOKS 
Association of Hawaiian Pineapple Canners. Experiment station. 
Pineapple quarterly, v. 1, no. 1, April 1931. Honoluluye@geare 
Beale, Reginald. 
The book of the lawn. A complete guide to the making and mainte- 
nance of lawns.and greens for all purposes. 151 p., illus., Lon- 
don, Cassell & Co., Lid., 1931. [Chapter IX. Pests. p. 86-937] 
Blatchley, W. S. 
Blatchleyana, a list of the published writings of W. S. Blatch— 
ley .. . together with a chronology of -his life: the fixationeas 
types of new genera and species described by him... 77 p. 2 
parts (incl. front.) Indianapolis, The Nature Publishing Co., 
L507 
Bracci, F. 
Le piante oleifere con particolare considerazione all'Olivo 
Parte I. 129 p., illus., Pisa, Tipografia editrice Pacini Mar— 
iotti, 1930. [Parasiti animali, p. 109-120. ] 
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