i) 
oh 
John C, Hailin, entomologist and biologist of the Prickly Pear Board, 
Conu.onwealth of Australia, who is also a collaborator of this Bureau, 
is teuporarily located in Miani, Fla., Studying the cactus insects of that 
region, 
Se Om ee me ee Oe ee ee ae ee oe ow oe 
LIBRARY 
Mabel Colcord, Librarian 
New Books 
--— 

Peiiins, S. H.. Chemical fertilizers and parasiticides, 273 bP eee Sate iA 
tap, illus. London, 1920. (Industrial chemistry... ed. by Sanuel 
Rideal.) . 7 
General bibliogranhy, p. 257-258, 
Findlay, Hugh, editor. Ths handbook for practical farmers... Soa Ds, 
illus. N.Y. and London, D. Appleton and Company, 1920, 
Pests on the farm and their control, p. 490-499, 
Hdéulbert, C. Les insectes, anatomie st Physiologie generale... Ea. 2 rev, 
Meare ps, Alus, Paris, Librairie Octave Doin, Gaston Doin editeur, 1920. 
(Encyclonsdis Scicntifique publies sous la direction du Dr. Toulouse.) 
Index bibliographique, Pp. 543-352, 
McGillivray, A. D. The Coccidas...502 p. Urbana, Illinois, The Scarab 
Company, 1921. 
Percival, John, Acricultural bacteriology; theoretical and practical, 
ed ed. 308 p., illus, London, 1920, 
Sloane, T. O'Conor. Liquid air and the liquefaction of gases... Hd. 3 rev, 
and enl. 394 p., illus. London, Constable and Company, limited, 1920, 
Wolbach, S. Burt. Studies on Rocky Mountain spotted fever. 197 p., 20 plates, 
Reprinted from the Journal of Medical Research, v. 41, now Lg Navi proisis. 
Boston, PTL yeoTSESt 
Bibliography, p. 187-193, 
Zoological Record. V. 95...1918, Insects: 246 p., by D. Sharp. London, 
Printed for the @aelozical) Society (of London), 1920, 
FOREST INSECT I ESTIGATIONS 
A. D, Hopkins, Forest Entomolosist in Charge, : 
Air “gad # Bk Craighead has tendered his resignation to accept a position 
with the Department of Agriculttre, Dominion of Canada. 
Dr. T. E. Snyder left Washington on January 16 for New York where 4 
Consultation with engineers of the Arerican Telephone and Telegraph Corpany 
