pig 6 fe 
BEE CULTURE INVESTIGATIONS 
James I. Hambleton, in Charge 
Dr. A. P. Sturtevant, in charge of the United States Inter—moun— 
tain Bee Culture Field Laboratory at Laramie, Wyo., spent several days 
in the week of August 20 at the Bee Culture Laboratory, Somerset, Md., 
conferring with members of the staff about the work of the Laramie Sta— 
tion. He left to teturn to his station on August 27. While here Doctor 
Sturtevant also made a study of septicemia, a disease of adult bees re- 
cently discovered by Dr. C. E. Burnside. It is thought that this disease 
also exists in the Intermountain States. 
Dr. Martin Schwartz, Reichministerium fiir Ernahrung und Landwirt— 
schaft, Berlin-Dahlem, Germany, visited the Laboratory on August ae Ss. 
Miss Winifred S. Hull, temporarily employed as Field Assistant 
at the Bee Culture Laboratory, resigned on August 25 to resume her studies 
at the Medical School of Johns Hopkins University. 
Apicultural Section, Fourth International Congress of Entomology 
Jas. I. Hambleton, Dr. C. E. Burnside, Dr. L. M. Bertholf, Vand 
Miss Ethel L. Coon, of the Bee Culture Laboratory, at Somerset, Md., 
and Dr. A. P. Sturtevant, of Laramie, Wyo., attended the Fourth Interna- 
tional Congress of Entomology, at Ithaca, New York, August 13 “tO see 
Dr. Burnside, Dr. Bertholf, and Mr. Hambleton presented the following 
papers, respectively: "A septicemic condition of adult honeybees," "Re- 
actions of light in honeybees," and "Apparatus for measuring the flight 
activity of honeybees." 
Dr. Lloyd R. Watson, formerly of the Bee Culture Laboratory, but 
now with the Genetics Department, Cornell University, gave several demon— 
strations of the artificial insemination of honeybees, which were very 
well attended by members of the congress. 
A paper presented by Dr. A. G. Lochhead, Central Experimental 
Farms, Ottawa, Canada, on "Studies on the Etiology of European Foulbrood,"” 
aroused much interest. Dr. Lochhead showed that cultures of Bacillus 
alvei under certain conditions transform into a symplasm from which 
develop colonies of bacteria to all appearances identical with Bacillus 
pluton. This strongly indicates that Bacillus alvei and Bacillus pluton 
are the same organism, and if Dr. Lochhead succeeds in infecting healthy 
colonies of bees with a growth of Bacillus pluton which he secures from 
his cultures of Bacillus alvei there will be no doubt that the two or— 
ganisms, heretofore considered entirely distinct, are one and the same. 
