PRINCIPLES OF MICROBIAL METABOLISM 383 



of hexosans, including cellulans, related to celluloses and produced by 

 Bac. aster osporus and Bad. prodigiosum, levulans, formed by bacteria 

 belonging to the Bac. subtilis group, and dextrans produced by Bad. 

 radicicola, have been reported in bacterial slime. Galactans were 

 found in the capsules of bacteria. 46 



46 Beijerinck, M. W. Die durch Bakterien aus Rohrzucker erzeugten schleim- 

 igen Wandstoffe. Folia Microbiol., 1: 377-408. 1912: Kramer, E. Centrbl. 

 Bakt. 1, 87: 401-406. 1921. 



