ILLUSTRATIONS. 



Page. , 



Fig . 1. Work of tho larger wax moth 6 



2. American foul brood 8 



3. The ropiness of American foul brood 9 



4. American foul-brood comb 9 



5. European foul brood 11 



6. Apparatus for the shaking treatment 15 



7. Gasoline torch 16 



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