28 FOURTH ANNUAL REPORT 



containing dried scales of foul brood, after fumigating and 

 airing were placed in hives with bees on them. The chemical 

 action was such that the bees at once cleaned them out, and 

 no signs of disease has appeared in them since. But in those 

 combs having honey or pollen in the infected cells, or those 

 capped over with brood underneath, they were so covered that 

 the gases did not destroy the disease, for those treated July 

 27, in 41 days each of those combs had foul brood again. 



To prove that the gases do not go through wax-cappings, 

 I took some healthy hatching brood, fumigated it, then took 

 it out and cut away the cappings, and some of the bees had 

 life enough to crawl. 



I believe we should go slow and do careful experimenting. 

 I know old, diseased combs are worth more rendered into 

 wax, or those containing honey or pollen in infected combs 

 ^re not safe to use again. A sheet of comb foundation is 

 'worth far more. I believe it is possible, if carefully done, to 

 fumigate infected combs where there is nothing over the 

 disease, so that those combs can be saved. 



Platteville, Wis., March 17, 'l 904. N. E. France. 



