Bui. 739, U. S. Dept. of Agriculture. 



Plate I. 



Bacteria and colon count per cubic centimeter. 



Small-top pail 



825,000 



VPfe&v" 



270,000 



.,140,000 



Colon- 2 8 ,400 



520,000 





Small-to p ptiili 



2,400,000 



C^.r>n- 0- 



250,000 



Open pail. 



1,950,000 



610,000 



20 f : , 



Colan- 2.000 



560,000 



1,030,000 



340,000 



630,000 



• - . ; ' 



m .- f 



490,000 



850,000 



176,000 



366,000 



23 j #rjri$!. ' 



Col an- 0_ 



840,000 



1,450,000 



304,000 



460,000 



CoIjis- 



Colon- 



Sediment Disks from Pints of Milk Produced in Dirty Barn with Uten- 

 sils not Sterilized but Washed at Once After Previous Milking. 



