Effect of Internal Influences. 



tion to the various energies of reaction of the various animals and 

 organs, and as the investigations of the author showed, to energy 

 reaction of the same milk gland at different times. For instance it 

 appears that certain changes in form bear a definite relation to 

 the number of leucocytes in the milk. Thus the author obtained 

 the following results in the same quarter of a cow examined at dif- 

 ferent times : 



L. Leucocytes. 

 Str. Streptococci. 



Jan. 20, 1909. 

 L. Str. 



0.5 



0.4 brevis 

 1.9 brevis 



Jan. 25, 1909. 

 L. Str 



0.2 



2.0 brevis 

 3.0 brevis 



0.5 



brevis 10.0 longus 



Jan. 5, 1909. 

 0.5 Dipl. 



0.3 Dipl. 



0.1 



0.1 



These differences in the forms of streptococci may be seen dur- 

 ing one milking on the same animal, if they are compared at the 

 beginning, the middle and at the conclusion of the milking. These 

 differences are only slight, so that no definite conclusions should be 

 drawn from them. 



If however the results from various animals are compared it 

 may be seen, as already indicated above, that certain relations exist 

 between the number of leucocytes and the forms of the streptococci 

 since the streptococci become longer as the number of leucocytes 

 increases. The experiments extended from December 11, 1908, to 

 February 8, 1909, and include three stables with a total of 149 

 cows. 



Of these 149 cows 59, or 39.6% were more or less affected. In 

 most animals (140), all quarters were separately examined and 



