PLATE VI. 



pi. BACILLUS ACIDI-LACTICI. 



(OF SOUR MILK.) 



2500. Photomicrograph by Wm. Radam. 



3. BACILLUS LACTIS ERYTHRO- 

 GENES. 



(bacillus of red milk.) 

 :-5(X). Photomicrograph by Wm. Radam. 



22. BACILLUS CYANOGENES. 



(OF BLUE MILK.) 



X 2500. Photomicrograph by Wm. Radam. 





24. BACILLUS OXYTOCUS PERNICI- 

 OSUS. 



(FOUND IN OLD MILK.) 



X 2500. Photomicrograph by Wm. Radam. 



