Xew York Agricultural Experimejs^t Statiox. 69 



Erf^ calculated that the average time for the milking process 

 with a machine was 2.3 minutes per cow. 



Woll and Humphrey^ found that where one man used two 

 machines on twelve cows and did not have to record the weight 

 of the milk he milked the cows with the machines and stripped 

 them with an average of three minutes per cow. 



These findings are at least roughly comparable with our obser- 

 vations where the actual milking of the cows and the care of 

 the milk averaged 2.9 minutes per cow. 



Haecker and Little'^ observed the time required by one man to 

 milk, strip, and record the yield from twelve cows using one, two 

 and three milking machines. In this case the time included that 

 taken to rinse the machines both prior to and after the milking 

 process (about 8 minutes). They found that with one milk- 

 ing machine the average time was 7.7 minutes; with two ma- 

 chines, 5.7 minutes; with three machines, 4.7 minutes. 



The observations at this Station reduced to a comparable basis 

 would be as follows : 



Preparation of two machine milkers 3.36 minutes 



Milking 12 cows at 2,94 minutes each 35.28 minutes 



Cleaning up two milkers 7 . 68 minutes 



Total time for 12 cows 46.32 minutes 



Average time for one cow 3.86 minutes 



From this it will be seen that the time consumed in milking 

 at the Nebraska Station was nearly double that taken by the 

 present experiments. 



A part of this difference may be ascribed to the fact that the 

 Nebraska time tests were made in 1907-8 with an earlier type 

 of machine using six different sizes of teat cups while those at this 

 Station were made in 1911 with a later type using but a single 

 size of teat cups. Obviously the time lost in changing from one 



1 See footnote 1, p. 60. 



2 See footnote 1, p. 62. 



3 See footnote 2, p. 61. 



