THE DAIRY HERD. 21 



lbs. The cow that will make only 200 lbs, an- 

 nually is worth what she will sell for in the mar- 

 ket, which is about $30. 



The 250-lb. cow gives us 50 lbs. for profit, 

 which we will say is worth 20 cents per lb. or 

 $10, which will pay 10^ interest on $100. 

 Therefore if the 200-lb. cow is worth $30, the 

 250-lb. cow is worth $130. In other words you 

 can as well afford to pay $130 for a cow that 

 will make 250 lbs. of butter yearly as to pay 

 $30 for a cow that will only produce butter- 

 fat to make 200 lbs. of butter. No one would 

 think of paying $130 for the 250-lb. cow, but 

 she is just a,s good an investment as the 200-lb. 

 cow is when both are to be kept for a term of 

 years on the farm. If any improvement is made 

 on the 200-lb. cow by raising her calves, the 

 credit must be given the dairy sire to which 

 , she is bred. By the use of a proper sire the 

 heifer calves from the 250-lb. cow may also 

 be improved over their dam. 



On the above basis the 300-lb. cow would 

 give 100 lbs. of butter for profit which would 

 be worth $20, or 10^ interest on $200. There- 

 fore the 300-lb. cow is as good an investment at 

 $230 as the 200-lb. cow is at $30. And when 

 we have a 350-lb. cow, as we frequently do, we 

 have another $10 of profit which means that the 

 cow is worth another $100, and the 400-lb. cow 

 gives us still another $10 of profit to figure as 



