MILK SupPLy 49 
all milk utensils thoroughly after use; keep them in a clean place 
between milkings. Do not store the milk on the farm in cans 
that have not been washed by the factory. 
8. Stables —Whitewash the stable twice every year and re- 
move manure daily. (Some condenseries furnish spray pumps 
for applying whitewash.) 
Inspection of Milk at the Condensery.—At the condensery 
the milk is subjected to rigid inspection by a man who is, or 
should be, an expert on milk inspection; every can is examined. 
Warm milk and milk that is tainted, or smells slightly sour 
should be rejected. 
Inspection of Milk by Sense of Smell and ‘Taste—In most 
cases the milk is inspected with reference to odor. The inspector 
quickly raises the cover of each can to his nostrils. The odor in 
the cover is typical of that in the can. If it is “off,” the can is 
rejected. An experienced man on the platform can, by the use 
of this method, tell with much accuracy, whether the milk should 
pass or not. 
Inspection of Milk According to its Temperature.—The 
temperature is also noted. This need not be done with the ther- 
mometer in each case. By placing his hand on the body of the 
can, or by neting the warmth of the air and odor in the cover 
immediately after removing it, or by the presence or absence of 
small particles of butter floating on the surface of the milk, the 
inspector can readily tell 1f the milk has or has not been properly 
cooled. A correct thermometer should always be on the plat- 
form for guidance. 
Inspection of Milk by the Use of Acid Tests——Since the 
degree of acidity, or the sweetness of the milk, is one of the 
chief factors that determines its fitness for condensing purposes, 
tests that rapidly and accurately determine the per cent of lac- 
tic acid in the fresh milk, are of great service. 
Some concerns have adopted a definite acid standard of milk, 
rejecting all milk containing more than the maximum per cent 
of acid of their standard, and they test every can of milk received 
with an acid test. ‘This method insures sweet milk in the fac- 
