In 1948, 21 percent of Chicago's milk was sold in half-gallon glass containers. By 1954, 37 percent of all milk in Chicago was distributed in half gallons, paper or glass. Convenience and price were both factors in the increased use of half gallons.

(d) New products: Modified skim milk, skim milk, buttermilk, and flavored milk drinks-Increase in sales in Chicago much greater than in New York: Sales of milk products using grade A class I milk in Chicago in 1954 averaged 0.044 half pint daily per person or 5 times the sales of these products in 1940 (table 1). In 1949, Chicago sales of milk products averaged 0.031 half pints daily or over 5 times the reported sales of these products in the New York market (0.006 half pint). A 2-percent skim milk fortified with extra vitamins and increased amounts of nonfat solids has found public favor in Chicago, particularly with those concerned with overweight.

1.00

FIGURE 1.-CHANGES IN PER CAPITA SALES OF MILK

.60

1940

Source: See tables 1 and 2.

48 50 52 54

FIGURE 2.-INDEXES OF PER CAPITA SALES OF MILK-CHICAGO AND UNITED

Source: Table 1 for Chicago. USDA Dairy Situation, October 1954 for United States.

50

52

54

FIGURE 3.-INDEXES OF PER CAPITA SALES OF MILK-NEW YORK AND UNITED STATES, 1940-54

Source: Table 2 for New York. USDA Dairy Situation, October 1954 for United States

FIGURE 4.-INDEXES OF CHANGES IN PER CAPITA DISPOSABLE INCOME, CHICAGO AND NEW YORK, 1929-54.1

29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53

1 Proportions that per capita disposable incomes, New York and Illinois were of those of United States, 1929-54.

29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53

FIGURE 6.-PROPORTIONS THAT PER CAPITA DISPOSABLE INCOMES IN SPECIFIC REGIONS WERE OF THOSE IN THE UNITED STATES, 1929-53.

Data from U. S. Department of Commerce, Survey of Current Business, August 1951 and later issues.

FIGURE 7.-LOWEST REPORTED STORE PRICES, CHICAGO AND NEW YORK, 1925-54.

Source: Chicago: U. S. Department of Agriculture Fluid Milk and Cream Reports. New York: 1925-32, from Legislative Document (1933) New York State No. 114, p. 248. Store prices from 1925 to 1932 based upon those for bulk milk. Data for 1933 to 1938 from New York State College of Agriculture and U. S. Department of Agriculture, AE-237.