6 
BULLETIN 1, U. S. DEPARTMENT OF AGRICULTURE. 
existence and to have a full complement of officers, but not certifying 
any milk at the time of reporting. The following table shows the 
number of dairies certified by each commission : 
Dairies certified. 
Commissions. 
Dairies certified. 
Commissions. 
None 
20 
19 
10 
4 
3 
5 
3 
1 
6 
1 
2 
10 
1 
3 * 
12 
1 
4.. 
20 
1 
Out of 63 commissions reporting as above, 20 had discontinued the 
certification of milk. The smallest amount certified by any one com- 
mission is 75 to 100 quarts a day, while the greatest amount which is 
passed upon by a single commission is 10,752 quarts a day. A few 
commissions certify cream as well as milk. Ninety-two certified 
dairies answered the question blanks sent out. and they report the 
total quantity of milk produced as 16,633 gallons a day. As there 
are about 125 certified dairies in all, it seems probable that the total 
production reaches 25,000 gallons. 
The 63 commissions answering the letter reported the certification 
of 126 dairies. A former investigation (Bureau of Animal Industry 
Bulletin 104) showed that on January 1, 1907, there were only about 
6,000 gallons a day of certified milk produced; so that in five years 
there has been an increase in the production of certified milk of about 
300 per cent. 
INSPECTED MILK. 
Several of the medical milk commissions are supervising the pro- 
duction of a special grade of milk which is called " inspected milk." 
This milk does not conform to all the requirements for certified milk, 
but is still of a high quality and much safer than the ordinary market 
milk of most cities. It is usually demanded that the cows kept for 
the production of this milk be free from tuberculosis and that the 
bacterial count shall be under 100.000 to the cubic centimeter. This 
milk sells for a less price than does certified milk, and is therefore 
within the reach of a larger class of consumers. One commission 
reports that it is inspecting 9 dairies in addition to those certified. 
The total number of " inspected " dairies reported was 20. The 
inspection of dairies seems to serve a double purpose, in that it not 
only puts a clean milk, which is produced under medical supervision, 
in the hands of the consumer at a reasonable price, but it also serves 
as a school for dairymen who may contemplate at some future time 
the production of certified milk. 
