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keep the tested and untested units distinctly separate. Poultrymen should 

 understand that as soon as birds are five months of age, they are officially' eligible 

 for the test. Furthermore, it is sound policy to test birds before their eggs are 

 saved for hatching. If this principle were followed by flock owners, a great many 

 of the birds would be tested during the first months of the testing season rather 

 than during the ver>' congested months. 



It is hoped that flock owners will cooperate to the fullest extent in order that 

 high quality service may be extended to the greatest number possible under 

 existing circumstances 



Publication of this Document Approved by Commission on Administration and Finance 



3M-7-46-18974. 



