164 — 



Study of the Results. 



It will at once be seen from the table that there was a steady and 

 constant diminishing in the flow of milk of bolli lots but that lot 

 II fell away in their milk yield much more rapidly that lot I. At 

 the same time, if we except the last two weeks (of which mention 

 will be made later) the milk of lot II showed a constant and consid- 

 erable increa.se in percentage of fats, while that of lot I remained 

 very nearly stationary. For this reason there was very little dif- 

 ference in the total amount of fat produced by the two lots as will 

 be seen by the following sun}niar3\ 



TABLE II. 



At beginning, June 8 . 

 1st Period, June 9-July 6 

 2d Period, July 7-Aug. 3 

 3d Period, Aug. 4-31 • . 

 4th Period, Sept. 1-21 . 



In this trial we certainly obtained no return in milk or butter for 

 the extra grain fed ; but we should want to repeat the trial with 

 other and larger numbers of cows, in other .sea.sons and on other 

 pastures before we should consider the matter as at all settled. 

 At present all the other data we have on the question is found in 

 the report of an experiment made at the Kansas Argicultural Ex- 

 periment Station in the summer of 1888 * and the results .so far as 

 they go are in accordance with ours. 



In this experiment two lots of two cows each were fed alternate- 

 ly on rations consisting of pasture alone, pasture and bran, past- 

 ure and corn meal, and pasture and ground oats, for periods of 

 sev^en days each. Professor Shelton from a most careful study of 

 the milk and butter product obtained from these rations extending 

 over a considerable period of time concludes : 



"The lesson taught plainlv is, that the grain in the ca.se, of 

 corn meal, bran and oats, was fed at a considerable loss. The 



* First Annual Report of the Kansas Experiment Station for the year 

 1888, p. 69. 



