GROWTH ON DIFFERENT CULTURE MEDIA 207 



face, and the consistency should be carefully noted, and in 

 some few cases the character of the edge. Figures 150 to 156 

 show some of the commoner types. 



Fig. 159. — Ameboid colonies on a plate. X i. 



Fig. 160. — Large effuse colony on a plate. The edge is lacerated. Inci- 

 dentally the colony shows the rate of growth for six successive days. X f . 



