THIRTY-FIFTH ANNUAL CONVENTION. 327 



as to attempt to make money with some of the cows that are being 

 milked. Just think of the "Wasting of years of weary, unprofit- 

 able toil" on our dairy farm in doing all the labor of preparing 

 the ground, planting, cultivating, harvesting and storing the 

 crops, only to dispose of the feed to a dairy herd in which many 

 of the individual cows are kept at an actua.1 loss. All of this 

 waste of labor and energy might easily be obviated if intelligence 

 and common sense were used in establishing and breeding up an 

 efficient dairy herd. To present and impress the facts of profit 

 and loss in the herds as they are today, is the object of this table 

 and it application. 



How to Use the Table. 



This table shows how the profit differs with cows differing 

 in production from 2,000 to 15,000 pounds of milk per year. 

 There is a column of figures for each increase of 250 pounds of 

 milk. To find the profit or loss of any individual cow, it is only 

 necessary to follow line 4 to the column having the number of 

 pounds of milk nearest to the production of the cow; run down 

 the column to line 17, and note these. Begin again on line 18, 

 following it to the figures that correspond the nearest to the 

 pounds of butter fat produced by the cow; go down this col- 

 umn to line 21. The sum of these two amounts gives the total 

 year's profit or loss from the cow. The reason that the cost of 

 feed should be based on the figures found in the column with the 

 butter fat and not in the column with the milk, is because cows 

 producing rich milk require more feed per hundred pounds of 

 milk than cows testing low in butter fat. 



As an example of how to use Table 1, the returns from the 

 first cow in herd No. 1 are here figured. She produced 4,191 

 pounds of milk and 122 pounds of butter fat. In line 4 find the 

 number of pounds of milk nearest that produced by the cow, 

 which in this case is 4,250: Follow down this column to line 17, 

 to the figures which read $3.99. Beginning again on line 18, 

 follow it to the figures that correspond the nearest to the pounds 

 of butter fat produced by the cow, which in this case are 120. 



