DESCRIPTION OF SPECIES OF STREPTOMYCES 189 



greenish, produced after II days. Amber Milk: Soft, rennel curd formed al 36°C 



pigmenl diffused throughoul medium. after is hours; completely peptonized in 12 



Egg medium: Growth tan, wrinkled. No days, 



sporulation after 10 days; limited while Starch: Hydrolysis strong. 



sporulatioD observed in II days. Soluble Nitrate reduction : Negative, 



pigmenl brown. Very slow liquefaction after Production of IPS: Negative. 



28 days. Temperature: < Optimum 36 ( '. 



Potato: Growth lighl gray, wrinkled. Carbon utilization : Utilizes glucose, arabi- 



Soluble pigment deep brown. nose, trehalose, xylose, sucrose, maltose, 



Gelatin: Liquefaction rapid. Soluble pig- galactose, dextrin, soluble starch, mannitol, 



ment deep brown. glycerol, and salicin. No growth with sor- 



Figure 35. S. canescus, grown on casein digesl beefextracl agar for 12 days, X 3,000 I. Courtesy 



of K. L. Jones). 



