Cost of Milk Pkoduction. 83 



they had been seriously annoyed by the horn fly. They were retained 

 in the herd for another year, and one of them, Daisy, showed marked 

 improvement. The other, Glista 2d, did not, and, therefore, has already 

 been sent to the butcher, while Daisy is retained for still further devel- 

 opment. This is mentioned simply to show the principles upon which 

 we base our selections. In the same way the cow May was under 

 unfavorable conditions as she had already been milked more than a 

 year when the experiment started, and in this year had given more 

 than 13,000 pounds of milk, and it was not to be expected that in the 

 second year she would do as well. On the other hand the cow Pet 

 was fresh in March and in full flow of milk during the time that the 

 pasture was at its best. Her cost of milk and fat in comparison with 

 others of her age and weight is therefore probably quite a little reduced. 

 But after taking into account ' 



