AEROBIC SPORE-BEARING NON-PATHOGENIC BACTERIA 319 



Plate 17 



Fig. 33. Bacillus megatherium from American Museum. Glucose agar, 24 

 hours 



Fig. 34. Bacillus megatherium from American Museum. Glucose agar, 48 

 hours 



Plate IS 



Fig. 35. Bacillus megatherium from Krai. Plain agar, 7 hours 

 Fig. 36. Bacillus megatherium from Krai. Plain agar, 24 hours 



Plate 19 



Fig. 37. Bacillus megatherium from Krai. Glucose agar, 20 hours 

 Fig. 38. Bacillus petasites from milk. Plain agar, 7 hours 



Plate 20 



Fig. 39. Bacillus petasites from milk. Plain agar, 20 hours 

 Fig. 40. Bacillus petasites from milk. Plain agar, 48 hours 



Plate 21 



Fig. 41. Bacillus petasites from Krai. Plain agar, 7 hours 

 Fig. 42. Bacillus petasites from Krai. Plain agar, 20 hours 



Plate 22 



Fig. 43. Bacillus graveolens from Krai. Plain agar, 7 hours 

 Fig. 44. Bacillus graveolens from Krai. Plain agar, 20 hours 



Plate 23 



Fig. 45. Bacillus tumescens from Krai. Plain agar, 7 hours 

 Fig. 46. Bacillus tumescens from Krai. Plain agar 20 hours 



Plate 24 



Fig. 47. Bacillus tumescens from Krai. Glucose agar, 48 hours 

 Fig. 48. Bacillus fusiformis from dust. Plain agar, 24 hours 



Plate 25 



Fig. 49. Bacillus Jusiformis from dust. Plain agar, 48 hours, showing long 

 threads 



Fig. 50. Bacillus fusiformis from contaminated hirudin. Plain agar, 24 hours 



Plate 26 



Fig. 51. Bacillus fusiformis from contaminated hirudin. Plain agar, 48 hours 

 Fig. 52. Bacillus terminalis from milk. Plain agar, 17 days 



