ca 









Tower, W.:L, The mechanism of evolution in.Leptinotarsa, 384 p,,illus., © 
18 pl. Washington, Carnegie Institution, 1918, Bibliography, p.382-384, 
Vaughan, V. C, Infection and immunity. 238 p. Chicago, 1915, . 
meer 

ecm ome 

DECIDUOUS FRUIT INSECT INVESTIGATIONS 
A, L, Quaintance, Entomologist in Charge 
The Bureau's laboratory at Renton Harbor, Mich,, has been, discontinued. F, 
L, Simanton, who has been in charge of this leberatory, has been transferred t0 
Monticello, Fla,, where he will assist in connection with pecan insect investigs 
tions, . | 
Wn, A. Hoffman, who has been working with J, B, Gill at Monticello, Fla., in 
connection with pecan insect investigations, has been transferred to Brownwood, 
Tex,, where he will be engaged in pecan insect investigations. a 
i. H. Slegler, who has been in Charge of the Bureau's laboratory at Walling- 
ford, Conn,, has been transferred to Washington. He will make occasional trips 
to Dover, Del,, and Wallingford, Conn,, to assist in the work at these places, ~ 
William Yetter, a graduate of the Colorado Agricultural College, has been — 
appointed as scientific assistant, and will be engaged in codling moth investiga 
tions in the Grand Valley, with headquarters at Grand Junction, Colo 
Dr. ©, H, Richardson, a graduate of Stanford University and postgraduate of 
Harvard end Coluiubia Universities, has been appointed insect physiologist, and — 
will be engaged in the investigation of the mineral. oil group of insecticides, 
Soaps, soil fumigants, etc., with headquarters at Washington, D. C, This work — 
is being carried out in cooperation with the Bureau of Chemistry. | 


—_— 

SOUTHERN FIELD CROP INSECT INV2STIGATIONS 
J. L, Webb, Entomological Assistant Acting in Charge 
J. K, Dickerson, junior chenist, Bureau of Chemistry, has been detailed by the 
Bureau of Chemistry to take up certain work of a chemical nature et the boll 
weevil laboratory at Tallulah, La,, in connection with the epplication of arseni-= 
can dust poisons to cotton for the control of the boll weevil. Present indice- 
tions are that the cotton planters of the South will use considerable quantities ~ 
of al a in dust form during the coming season, in combating the boll 
WEGCV1IL, 
Dr, W. D. Pierce has returned to Washington after making an extended trip, 
including El Centro, Cal,, and Houston, Tex,, in his itinerary. 
S. E, Crumb has returned to Clarksville, Tenn,, after spending some time in 
Washington, 
G, ii. Garrison has been detailed to assist R, H, Hutchinson in the poison- 
Ous gas experiments, 

TRUCK GROP INSECT INVESTIGATIONS 
F, H, Chittenden, Entomologist in Charge, 
To the present date, about 950,000 sweet-potato draws have been distributed 
to the growers on infested properties in the Baker-Charlton area in Florida, 
Distribution will continue throughout the month of May, The beds planted by the 
Florida Plant Board ae just beginning to yield, and it has been necessary to 
