31 



of lot I. and to 3018 Ib. in lot II. With this difference, the 

 rations as given above were used throughout the present test 

 (Experiment A), which was commenced on February 10 and 

 continued till May 3, 1904, a period of 12 weeks. 



A second test (Experiment B) with the same cows was 

 commenced on June 1, the cows being then out on grass. 

 The two lots were in this case reversed, lot I. being placed on 

 what was regarded as a fairly heavy ration for summer feed- 

 ing and lot II. on a light ration. The allowance per day was 

 as follows : 



LOT I. 



8 Ib. con- 

 centrated 

 food 



I 4 Ib. maize meal. 

 1 4 Ib. Egyptian cotton cake. 



3 Ib. straw chaff. 



LOT II. 



21b. maize meal. 



food 2 lb- E gyP tian cotton cake. 



3 Ib. straw chaff. 



It was impossible to determine the quantity of grass con- 

 sumed 011 the average by the cows, and no attempt was there- 

 fore made to adopt any theoretical basis in fixing- the rations. 

 From the middle of July, the cows had a small quantity of 

 green tares in addition to their other food, each lot receiving 

 the same allowance. 



The cake and meal and chopped straw were throughout 

 made into " crowdy " daily before being fed to the cows. 

 The mixture of concentrated food and chop, already weighed 

 out for each lot, was placed in a vessel and hot water poured 

 upon it. 



EXPERIMENT A. 



Results. Average quantities are given in all cases, but 

 the figures are so arranged as to show the fluctuations which 

 occurred from week to week throughout the trials. Table 

 II. gives the quantity of milk yielded per day by each lot 

 for 12 weeks. 



As is usual more milk was obtained in the morning than 

 at noon and evening, and this applies equally to both lots. 

 The daily yield was greater throughout in the case of lot II. 

 than in that of lot I. As shown above, the average for the 



