= /B) x 
FRUIT INSECT INVESTIGATIONS 
A. Le Quaintance, Associate Chief of Bureau, in Charge 
vate I. Snapp, in charge of the Baeble laboratory a at Ft. Valley, 
Ga., write s follows: "Dilation recommendations for lubricating-oil 
emulsions are aetsasnst based on the assumption that the stock emulsion 
contains approximately 66 2/3 per cent of oil. Many cormercially manufactur 
lubricating-oil exmlsions offered to Southern peach growers have been found 
to be low in oil content. Some of these have been as low as 48 per, cont. 
The accumlation of steam during the process of manufacture is often 
responsible for the low oil content. If ths usual dilution recommendations 
are ernest to emlsions low in oil content an ineffective spray is often 
used. ntomologists interested in emulsions in other sections may care te 
look into this matter in an attempt to avoid the use of oil sprays too weak 
for effective scale control." 
Miss: Alice dant Hi of Toronto University, recently. spent two 
weeks studying aphids with Dr. Baker and Dr. Mason. ‘She is especially 
interested in the aphids of British Columbia, and had: with her a large 
collection taken by herself in that province. She has covered some inter- 
esting territory, and on one of her collecting trips went as far north as 
the Alaskan border. Many of her specimens prove to be of undescribed 
species Re . 
G. F. Mozgnette, who was formerly in charge of the Bureauts. laboratory 
at Miami, Fla., and who resigned from the service temporarily, has now been 
reinstated and placed in charge of pecan insect investigations, with head- 
quarters at Thomasville, Ga. 
Julian J. Culver, who has been assisting in the testing work of the 
Insecticide and Fungicide Board, has resigned from that service to accept 
@ position with the American.Cyanamid Compeny, “Re will cerry on experimental 
work with calcium cyanide, With neadquarters at Tampa, Fla. 


LIBRARY 
Mabel Colcoré, Librarian 
NEw BOOKS 
Arrow, G. J. 
-+-- Coleoptera, Clavicornia. Zrotylidac, Lenguriidae and endouyelndeas 
London, Taylor and Francis, 1325. 416 Bp», illus. (fauna, of British 
India, including Cevlon and Burm. ) ' 
Barbey, Auguste. 
ove Traité d'entomologie forestiere > Bane des sylviculteurs. ae 
&. ed. rev. Paris, Berg ginothgileey 1925, 749 pp., illus.) Coles 
Index'bi ibliographimie, PP. .765=728. yeaa Th meat: 
Bazin, G. A. ee 
Observations sur les plantes et leur analogie avec les insectes... 
Strasbourg, J. R. Doulsseker, 1741. 134 pp., illus. 
