Streptococci of souring milk with special reference to streptococcus lactis: Studies of the streptococci. IX

Much confusion exists as to the species of streptococci found in milk at different stages in its history, and there is doubt as to whether the identity of the typical streptococcus of sour milk is generally appreciated. The medical bacteriologists usually think of streptococci in milk as indicating a suppuration in the udder or as evidence of some definite contamination, while on the other hand, the dairy bacteriologists usually think of the harmless lactic acid organism. These two points of view are often displayed in attempts to interpret the significance of streptococci in milk.