MILKING MACHINES: 
EFFECT OF METHOD OF HANDLING ON THE GERM 
CONTENT) OF) MILK. 
H. A. HARDING, J. K. WILSON AND G. A. SMITH. 
SUMMARY. 
1. In this study the machines were operated in the Station 
stable and the general management of this was intentionally 
made to correspond closely to that of the better dairies supply- 
ing the city milk trade. No attempt was made here to copy 
the conditions surrounding the production of “ certified ” milk, 
but it is the intention to study these conditions later. 
2. The Globe milking machine, as tested in our stable, was 
highly unsatisfactory. It did not remove ail of the milk which 
_ the cows were prepared to give and it highly contaminated 
the milk as drawn. 
3. The Burrell-Lawrence-Kennedy machines which have 
been tested were more successful. They appeared to remove 
practically all of the milk which the cows would give. An ac- 
curate comparison of the yield by machine and by hand milk- 
ing is now in progress. The effects of the long continued use 
of the machine upon the cows and their value as time-saving 
elements are also being observed but as yet we are not able to 
give any definite conclusions. 
*The study of milking machines is done through the co-operation of 
the Dairy and Bacteriological departments and in the investigation one 
of us (H) assisted in the planning of the work and in putting the 
results into literary form, another (W) was responsible for the bacterio- 
logical samples and the analytical work in connection with them while 
the other (S$) had charge of the dairy and of the operation of the milk- 
ing machines. 
*A reprint of Bulletin No. 317. 
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