. American bee journal. Bee culture; Bees. VOL. LIX—NO. 7 HAMILTON, ILL., JULY, 1919 MONTHLY, $ A YFAR SOME OBSERVATIONS ON NOSEMA-DISEASE By G. F. While, Bureau of Entomology, Washington, D. C. NOSEMA-DISEASE, in many ways, is one of the most inter- esting of the diseases of adult bees. Doubtless the beekeeper al- ready is quite familiar in a general way with the nature of the disorder since the bee journals have carefully presented the facts concerning the disease as they have been determined. Since 1910 the writer has been mak- ing some studies on the disease, and in the present communi


. American bee journal. Bee culture; Bees. VOL. LIX—NO. 7 HAMILTON, ILL., JULY, 1919 MONTHLY, $ A YFAR SOME OBSERVATIONS ON NOSEMA-DISEASE By G. F. While, Bureau of Entomology, Washington, D. C. NOSEMA-DISEASE, in many ways, is one of the most inter- esting of the diseases of adult bees. Doubtless the beekeeper al- ready is quite familiar in a general way with the nature of the disorder since the bee journals have carefully presented the facts concerning the disease as they have been determined. Since 1910 the writer has been mak- ing some studies on the disease, and in the present communication there are discussed briefly some of the more important observations ob- tained which would seem to be of in- terest to all beekeepers. In a bulletin* (No. 780) recently issued by the United States Department of Agri- culture, the writer has given in some detail the results obtained which have a more or less direct connection with the problems with which the practical apiarist is confronted. No direct work on the treatment of the disease was undertaken. In planning the investi- gations, however, the problems se- lected were of such a nature that the results obtained from them could be used by the beekeepers in devising methods for treatment. Nosema-disease Not a New Disorder The disorder now known as No- sema-disease was reported by an Eu- ropean observer as early as 1857. That such a disease of bees exists was afterward almost forgotten until the fact was again brought to the at- tention of beekeepers in 1909. The disease is present at least in Austra- lia. Switzerland, Germany, Denmark, England, Canada and the United, States, and has been reported from * Bulletin No. 780 was written pri- marily for beekeepers. Strictly tech- nical discussions were purposely avoided in preparing it. While it contains some semi-technical terms, it is believed these will offer no par- ticular obstacle to a satisfactory un- derstanding of the subject matter Please note that th


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Keywords: ., bo, bookcentury1800, bookdecade1860, booksubjectbees, bookyear1861