162 Report of the Department of Bacteriology of the 



one which had had udder trouble three years previous to this test 

 and had always given relatively high cell counts even during the 

 height of her lactation period. Several of the highest counts given 

 for the other animals were obtained from milk drawn four or five 

 days after milking had really been discontinued. 



D. SUMMARY OF CELL COUNTS ACCORDING TO MONTH OP LACTATION. 



All of the cell counts of the mixed milk of individual animals 

 which have been made in this or previous investigations have been 



Table XIII — Cell Counts Arranged According to Month of Lactation. 

 Numbers given represent thousands of cells per cubic centimeter. 



* Counts given in tihis column were obtained from cows during the first three days of lactation, 

 t Counts given in this column were obtained from cows during the first month of lactation 

 after the first three days of lactation. 



% These averages do not include the highest count of the column above. 



