=e 
arc lamp for 62 hours), whereas the toxicity of dihydrorotenone was not 
affected. Dihydrorotenone therefore appears to be the toxic, light- 
stable compound for which we have been searching." 
BEE CULTURE 
New honey sample received.—-Jas. I. Hambleton, Somerset, Md., re— 
ports that he received in March "a sample of honey from Amelanchier al— 
nifolia, produced at 6,000 feet elevation in the Eldorado National For- 
est, Strawberry, Calif. This interesting sample was sent for our per— 
manent collection." 
Economic survey completeéd.--The field work on this project, be- 
gun on January 24 by Frank E. Todd of the Davis, Calif., laboratory, 
working with A. S. Burrier, of the Farm Management Department of the 
Oregon Experiment Station, was concluded on March 10. The period covered 
in the study was for the beekeeping year of 1931, * * * Excellent co=— 
Operation was received, both from the experiment station and from bee- 
keepers. Production and management records were secured from 89 bee- 
keepers in the chief honey producing regions of the State. A few more 
records remain to be taken by Mr. Burrier, to complete the work of the 
year. A total of 39 working days was spent on the project with an av-— 
erage of 2.5 records per day and travel of about 654 miles per record. 
Beekeeping is widely scattered in Oregon and the average number of colo— 
onies per apiarist visited was 198. A decline of approximately 27 per 
cent in the number of colonies since 1920 was shown. Many former 
beekeepers are now out of business, the most common reason given being 
the prevalence of bee disease. * * * Among losses encountered, epray 
poison was important. Winter and spring losses are important in some 
sections, The marketing problem seems not to be important. Almost no 
honey buyers are active in the State, the production being about 2 pounds 
per capita of population, sold and consumed mostly locally. * * * A list 
of active Oregon beekeepers has been prepared and sent to the Market 
News Service. * * * As yet fruit growers have not taken special in-— 
terest in pollination. The market for bees for pollination is growing, 
Some interest being taken in use of package bees because of loss of 
colonies from spray poison, prevalence of disease, and fear of epread 
Of pear blight. This has been one of the poorest honey years ever ex— 
perienced in Oregon beekeeping, the crop average being about 614 pounds. 
The results of this survey must, therefore, be considered as representing 
a minimum year." 
Bees like 
hae uted blossoms.--"An interesting observation of 
bees working emasculated apricot blossoms for nectar" by George H. Van- 
sell, Davis, Calif., is reported by E. L. Sechrist, as follows: "Maas 
investigators had supposed that bees would not visit blossoms from 
which the petals and blossom base had been removed. Vansell found, 
however, that not only did bees visit these blossoms but that once a 
bee had begun to work the emasculated blossom ms, it usually continued 
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