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san Pedro citrus pathological laboratory. Ist annual report, May, 
"> 1916. San Pedro, Isle of eee West Indies. Columbus, Ohio, 
1915. 4lp. illus. 
tion no, 12, Publications of the Public Health Service. 
September, 1915. 
BEE CULTURE. 
E. F. Phillips, In Charge. 
: In cooperation with the Office of Home Economics of the States 
i ‘Relations Service, a series of experiments are being conducted with 
'-@ colony of bees placed in a respiration calorimeter. The object of 
these experiments is to determine the exact guantity of heat given 
off by the bee colony under different conditions in regard to the 
temperature, humidity, and the carbon dioxid and oxygen content of 
the surrounding air. The water vapor and the carbon dioxid given 
att by the bees under these different conditions are also determined. 
_ Mr. W. A. Parks, of Washington, D. C., has been appointed as 
“Student Assistant and assigned to the work referred to above. 
The packing of the bees for winter has just been completed. 
This has been accomplished by a method hitherto not employed in this 
apiary and commonly not used so far south, The hives are placed in 
groups of four and each group is surrounded by a large wooden case, 
built of 7/8-inch boards, the space intervening between the hives 
and case being filled with sawdust. The dimensions of the cases are 
such that a layer of sawdust 6 inches in thickness on the sides, 4 
inches on the bottom and 12 inches on top surround the outer surfaces 
of the hives. Passage ways are provided for the ingress and egress 
' Of the bees. It is expected that this method will bring the bees 
through the winter in much better condition than formerly, sincé re- 
Cent investigations of this office have indicated that bees commonly 
suffer from insufficient protection in winter. 
CEREAL AND FORAGE INSECT INVESTIGATIONS. 
EF. M. Webster, In Charge. 
Mr. V. L. Wildermuth, who spent some time in the office in the 
preparation of manuscript, has returned to his field station at 
) eenre, Aria, | 
Mr. ts, Ue Wilson, who spent a part of the month in the office 
preparing manuscript, has returned to his field station at Gaines- 
Ville a Fla « 
The connections of temporary appointees, Messrs. (C. H. Alden, 
W. B. Cartwright, and H. L. Douwier, have been severed on account of 
