THIRTY-EIGHTH ANNUAL CONVENTION 



283 



which is $17.63 per cow, or practically 13c per cow per day. 

 There was little difference in the average cost per hundred 

 pounds of feed in the two rations. The timothy hay in the poor 

 ration cost more than the clover hay in the good ration, while the 

 gluten feed in the good ration cost more than the corn meal 

 in the poor ration. 



In Fig. 1 the space between each two horizontal lines rep- 

 resents 20 pounds of milk and the space between each two ver- 

 tical lines represents one week's time, as indicated by the figures 

 at the top and sides. 



Table 1. — Amount of Milk Produced by Each Lot Per Week, Difference 

 Per Week, and Difference Per Cow Per Day 



Week 



Pounds 



milk per 



week 



Pounds differ- 

 ence per cow 





Lot 1 



Lot 2 



Difference 



per day 



Preliminary 



2384.7 



2279.3 



105.4 



1.7 



1 



2315.8 



1947.6 



368.2 



5.8 



2 



2189.6 



1811.8 



377.8 



6.0 



3 



2205.1 



1739.4 



465.7 



7.4 



4 



2259.0 



1652.9 



606.1 



9.6 



5 



2271.6 



1581.1 



690.5 



11.0 



6 



2229.7 



1537.0 



692.7 



11.0 



7 



2253.8 



1421.8 



832.0 



13.2 



8 



2259.5 



1467.1 



792.4 



12.6 



9 



2198.7 



1423,4 



775.3 



12.3 



10 



2121.3 



1381.2 



740.1 



11.7 



11 



1990.9 



1289.0 



701.9 



11.1- 



12 



1986.6 



1293.6 



693.0 



11.0 



13 



2000.6 



1265.1 



735.5 



11.7 



14 



1989.1 



1297.5 



691.6 



11.0 



15 



1961.8 



1238.7 



723.1 



11.5 



16 



1976.1 



1242.0 



734.1 



11.7 



17 



1918.8 



1232.1 



686.7 



10.9 



18 



1905.8 



1210.1 



695.7 



11.0 



5 days 



1359.2 



808.4 



550.8 



12.2 



Total 



39393.0 



26839.8 



12553.2 



10.65 



Results in Production of Butter Fat. 



Table 2 shows that the production of fat varied in a man- 

 ner similar to that of the milk. For one week previous to the 

 beginning of the test each cow in Lot 2 produced .09 pounds of 



