THE MILK SUPPLY OF CHICAGO 177 
ing chart shows a composite graph of several companies’ ex- 
perience during the period of raise in price. The price of milk 
was raised from 10¢ to 13¢ the first of October, 1917, and 
lowered to 12¢ per quart on November 1st, 1917, and remained 
stationary throughout November and December. 
100,00 
wal \ PAL 
NCO 
= 
85,000 a 7 
00 
o 7 lw 1 25 | & 22 29 +6 3 
OCTOBER NovemBER =‘ DECEMBER 
The figures on the left of the chart illustrate the number of 
points sold. A basis of 100,000 points was chosen as an 
arbitrary figure and the graph shows the decrease on that basis. 
The figures at the bottom represent the end of weeks. It may 
be necessary to explain the meaning of the word ‘‘point’’. 
A point is considered a quart of milk, or two pints of milk, 
one-half pint of cream or a quart of buttermilk. We may, 
therefore, assume that the figures on the left represent quarts 
of milk. 
There was a sharp decrease in consumption when the milk 
was raised from 10¢ to 13¢ per quart. After November 
Ist consumption gradually began to rise, although it did not 
approach normal. 
From an investigation conducted by several milk companies, 
it was found that the greatcr percentage in reduction of 
consumption of milk due to increase in price took place in the 
poorer sections of the city. Similar investigations disclosed 
that a very small percentage resorted to the use of canned milk. 
12 
