Apr. 12, 1S24 



Development of American Foulhrood 



147 



ardized Benedict's solution are placed in a white porcelain casserole and di- 

 luted with an equal amount of distilled water. To this are added about 5 grams 

 of anhydrous sodium carbonate and a small amount of ground pumice. This 

 solution is brought to a boil and the larval extract is run in slowly, drop by 

 drop at the end, until the blue color disappears and a white precipitate forms. 

 From the number of cc. of larval extract used, the milligrams of sugar per larva 

 and the per cent of sugar per larva are calculated (Table V) . 



Table V. — Unassimilated sugar in intestinal content of larvx at different ages 



« Unless otherwise stated, total cc. of extract equals 50 

 ' Total extract, 25 cc. only. 

 ' Total extract, 100 cc. 



<* Total extract, 30 cc. only. 



' Just sealed, early. 



f Just sealed, still coiled. 



