Bui. No. 1 , U. S. Dept. of Agriculture. 
Plate III. 
Steps in the Production and Handling of Certified Milk. 
1. Clipping- cows. 2. Cleaning cows. 3. Washing cows preparatory to milking. 
4. Milker washing hands. 5. Milking. 6. Cooling and bottling. 
