154 Report of the Department of Bacteriology of the 



b. cell content of the milk of individual animals in later 



periods of lactation. 



The milk of four cows was studied in detail during a period of 

 five weeks from Feb. 17 to March 22, 1911. Two of these were as 

 normal animals as could be selected from the herd and two were 

 abnormal in some respect. Table XI gives the detailed record of 

 these examinations and the fluctuations are shown graphically in 

 Graph II. The cell counts of the smears made for Millie of Geneva 

 (No. 19) were made by Mr. Stidger. All of the rest of the work 

 of testing these animals was done by the author of the paper. 



Table XL- 



Number op Cells Per Cubic Centimeter Found in the Milk of 

 Four Cows During a Period of Five Weeks. 



Numbers given in thousands per cubic centimeter. 



