Mattrep MILK 335 
barred by their geographical location and climate from the profitable 
husbandry of the dairy cow, and where the limitations of transpor- 
tation render the availability of fluid milk difficult or impossible. 
The annual output of maited milk in the United States was 15,- 
654,243 pounds in 1918, and 17,495,887 pounds in 1919. 
Federal Standards for Milk Powder, Skim Milk Powder and 
Malted Milk.3—The following standards of dried milk products 
were adopted by the United States Department of Agriculture 
March 16, 1917, and became effective March 31, 1917, as per Food 
Inspection Decision 170: 
“Driep Miik is the product resulting from the removal of water 
from milk, and contains, all tolerances being allowed for, not less 
than twenty-six per cent (26'7 ) of milk fat, and not more than five 
‘per cent (5° ) of moisture. 
Drikp SKIMMED MILK is the product resulting from the re- 
moval of water from skimmed milk and contains, all tolerances being 
‘ 
allowed for, not more than five per cent (3'. ) of moisture. 
Maurep Mi.« is the product made by combining whole milk 
with the liquid separated from a mash of ground barley malt and 
wheat flour, with or without the addition of sodium chlorid, sodium 
bicarbonate and potassium bicarbonate in such a manner as to secure 
the full enzymic action of the malt extract, and by removing water. 
The resulting product contains not less than seven and one-half per 
cent (7.5% ) of butter fat and not more than three and one-half per 
cent (3.5% ) of moisture.” 
Dick Process.-—S. M. Dick invented and patented a spray- 
drying apparatus for milk, U. S. patent No. 1.298470, 1919, 
similar to the McLachlan patent No. 806,747. In the Dick dryer 
the milk enters by gravity and is sprayed and distributed by a 
revolving disc arrangement. [art of the heated air enters at 
the top and part at the bottom of the desiccating chamber.. The 
air entering at the bottom 1s hotter than that entering at the top. 
1 United States Department of Agriculture, Food Inspection Decision 170, 
March 31, 1917. 
2 This process came to the author's attention too late for detailed dis- 
cussion in this volume. 
