AEROBIC SPORE-BEARING NON-PATHOGENIC BACTERIA 533 



Plate 10 



Fig. 71. Bacillus laterosporus from water. Plain agar, 6 hours 

 Fig. 72. Bacillus laterosporus from water. Plain agar, 3 days 



Plate 11 



Fig. 73. Bacillus agri from soil. Plain agar, 24 hours. 

 Fig. 74. Bacillus agri from soil. Plain agar, 3 days. 



Plate 12 



Fig. 75. Bacillus circulans from human dejecta. Plain agar, 24 hours. 

 Fig. 76. Bacillus pseudotetanicus from contaminated plate. Plain agar, 20 

 hours. 



Plate 13 



Fig. 77. Bacillus pseudotetanicus from contaminated plate. Glucose agar, 18 

 hours. 



Fig. 78. Bacillus brevis from dust. Plain agar, 24 hours. 



Plate 14 



Fig. 79. Bacillus brevis from soil. Plain agar, 48 hours. 

 Fig. 80. Bacillus brevis from milk. Plain agar, 3 days. 



Plate 15 



Fig. 81. Bacillus centrosporus from human dejecta. Plain agar plates, 30 

 hours. 



Fig. 82. Bacillus centrosporus from human dejecta. Plain agar, 24 hours. 



