ek 
Bollworri hibernation.--R, K. Fletcher, of the Texas Agricultural 
Experiment Station, College Station, Tex., reports on the cooperative 
work on the hibernation of Heliothis obsoleta Fab. Last fall 10 worms 
were placed in each of 40 cages containing 5 types of soil. Part of 
the cages were buried flush with the soil level and part were left on 
the surface of the ground for better drainage. No emergence of moths 
had occurred in March, and examinations on January 23, February 22, and 
March 28 showed an average of 17.72 percent, 12.44 percent, and 6 per- 
cent of the pupae alive. In all examinations more bollworns were 
alive in the surface cages than in the buried cages. The results are 
in Line with previous and larger experiments, to the effect that the 
major part of the winter mortality takes place with the aging and dis. 
integration of the pupal cases incident to spring rains, and that the 
- upland black and bottomland soils are more favorable for survival than 
the others tested. 
INSECTS AFFECTING MAN AND ANIMALS 
#. C. Bishopp, W. V. King, G. H. Bradley, amd E, C. Cushing at— 
tended the annual meeting of the New Jersey Mosquito Extermination 
Association on March 7, 8, and 9. Dr. Bishopp presented a paper by 
himself and C,. N. Smith reviewing the work done on mosquitoes during 
the past year in the various ‘parts of the world. Dr. King and Mr. 
Bradley also presented papers--"Notes on Federal CWA Mosquito Control 
Projects and Salt’Marsh Conditions in Florida," and "Mosquito Control 
Work Under the CWA in Alabama and Mississippi," respectively. The 
meeting was fairly well attended, and the program and discussions 
were very interesting and instructive. Arthur Gibson represented 
Canada, and representatives were present from Connecticut, New York, 
Delaware, and practically all counties of New Jersey. 
At the Orlando, Fla., laboratory preliminary tests of the host 
preferences of the Australian cattle tick, Boophilus annulatus australis 
Fuller, indicate that the tick breeds much more readily on cattle than 
on deer, Apparently sufficient breeding takes place.on deer, however, 
seriously to complicate the problem of control. In the tests a young 
buck and a young coe were used as hosts in comparison with two calves, 
Active direction of the large mosquito control project, in cooper- 
ation with the CWA in 32 States on the part of this Division of the 
Bureau, came to an end on February 15. However in several of the States 
the work has been continued as State—directed projects, in some cases 
with Bureau men acting in an advisory capacity. W. V. King and G, H. 
Bradley have given attention to the work in Florida, Alabama, and Miss- 
issippi, W. E, Dove in Georgia, and H. H.:Stage in Oregon anc Washington, 
In the District of Columbia the work retains its original status and is 
still going forward on the grounds of the National Arboretum. 
