Fie. 39. 



Fig. 40. 



Bac. Arborescens non-liqnefacien«. 

 Colony (!0 hrs. old. x 80. 



Bac. Arborescens non-llqnefaclens. 

 Colony 108 hrs. old. x 80. 



Fig. 41. 



Fig. 42. 



Bac. Rodonatus. 

 A. Deep colon; 86 hrg. old. x 80. 



Bac. Rodonatus. 

 B. Surface colony 30 lirs. old. x 80. 



Fig. 43. 



Bac. Kodonatus. 

 Surface colony on Ith.day. x SO. 



A. HOEN & CO., LTTH., BALTIMORE. 



