PLATE 94 
Growth of 24-hour-old cultures on potato slopes. All tubes contain a liberal quan¬ 
tity of water in the butt. 
A. —Bacillus vulgatus: Note the luxuriant folded and wrinkled growth, especially 
on the surface of the water in the butt, and on the lower portion of the slope. 
B. —Bacillus mesentericus: Note the less luxuriant growth. The growth on the sur¬ 
face of the water is more in the nature of a thin pellicle without any folding or wrink¬ 
ling. Often a netlike appearance of the growth is noted. 
C. —Bacillus alvei: No visible growth. 
D. —Bacillus orpheus: No visible growth. 
