PLATE 30 



A. — Two per cent +5 glucose Difco peptone beef bouillon agar slant of No. 36. 

 Three-day colony . Photographed August 29, 1919. Natural size. 



B. — Two per cent potalo-dextrose agar slants, a, No. 36, white culture, consistency 

 butyrous; b, stock, white culture, consistency of boiled starch; c, No. 39a, yellow 

 culture. 



