New YorK AGRICULTURAL EXPERIMENT STATION. 85 
the numbers found when using these large filters are distinctly 
below these figures. 
NEW TYPE OF MILKING MACHINE 
Late in 1907 there appeared what really amounted to a new 
type of milking machine. In this machine, No. 2716, no un- 
filtered air was admitted to the milk chamber, the form of 
suction filter which had been found to be efficient was retained, 
and the relief filters were of the form shown in Plate VEE, 
fig. 4. In these latter filters the cup for cotton was nearly 
twice as deep and twice as wide as in the filters originally 
furnished, as shown in Plate VI, fig. 3. 
A comparative test of the efficiency of this new machine as 
contrasted with the one originally furnished us was conducted. 
In this test the machines were handled ag nearly alike as pos- 
sible. Two of the four cows which were used in this ex: 
periment were milked by each machine on alternate nights, and 
each operator used each machine an equal number of times. 
‘The teat cups and rubber parts were all kept in the same brine 
tank and the cotton was carefully adjusted in the filter cups 
before each milking. The comparative results are given in 
Table VIIT. 
