. Nosema-disease. Bees. HOSEMA-DISEASE. 39. In the experiments it was found that Nosema apis was destroyed in all instances in which the temperature of the honey reached or exceeded 140° F. (60° C), a temperature at which the germ is killed by heat (p. 30). Sufficient data, thelrefore, have not been obtained to warrant a definite conclusion regarding the time required for the. Fia. 7.âPetri dish. Ttie top half is slightly raised, used here are 4 inches in diameter. Those direct simHght to destroy Nosema q,pis suspended ia honey. The results obtaiaed from tlie experiments made in which aqueou
. Nosema-disease. Bees. HOSEMA-DISEASE. 39. In the experiments it was found that Nosema apis was destroyed in all instances in which the temperature of the honey reached or exceeded 140° F. (60° C), a temperature at which the germ is killed by heat (p. 30). Sufficient data, thelrefore, have not been obtained to warrant a definite conclusion regarding the time required for the. Fia. 7.âPetri dish. Ttie top half is slightly raised, used here are 4 inches in diameter. Those direct simHght to destroy Nosema q,pis suspended ia honey. The results obtaiaed from tlie experiments made in which aqueous sus- pensions were exposed to the sun give some idea as tp^*he probable approximate time which would be required. PERIOD NOSEMA APIS REMAINS VIRULENT. PERIOD IN HONEY. In experiments made to determine the length of time Nosema apis I remains virulent in honey a suspension of the parasite in honey was I distributed in flasks, about one-haM piat being poured into each flask. 1 These were placed at room temperature and shielded from the light. lAfter different intervals colonies were inoculated, the suspension' ifrom a single flask being used. The results obtained are included lin Table XX. Table, XX.âPeriod Nosema apis remains virulent in hmey. Date of inoculation. Period in honey. Mon&a. Days. 1 0 1 18 2 0 3 10 3 27 2 6 2 15 2 25 3 5 3 17 3 20 3 21 4 4 5 0 â . 7 17 7 19 9 7 , 9i W 12 0 Besults of inoculation. Oct. 20, 1914. ,1915 'Feb. 24,1915 ((Feb. 4,1915 "Jan. 16,1915 4Julyl4,1915 'July 23,1915 ,1915 'June 11,1915 Sept. 3,: : June 24,1915 JiOot. 21,1915 "July 24,1916 liAug. 14,1913 "May 1,1915 Wune9,1914 'Apr. 27,1915 ^ay 5,:..'...:.'...â :..:-.;.:... 'ruly26,1916 Nosema infection produced. Do. Do. Do. Do. No infection produced. Do. Do. Do. Do. Do. Do. Do. Do. Do. Do. Do. Do. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - co
Size: 2483px × 1006px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwa, booksubjectbees
