July 8, 1918 Percentage of Fat in Cow's Milk 89 
Table XIII. — Correlation between the percentage of fat in cow's milk and the yield- 
Registered Holstein-Friesians 4 to S years of age 
Percentage of fat 
,2. 6 2. 7 2. 
3. 9 4- O 4. 1 4. 2 4- 3 4. 4 4. 5 4. 6 TotaU 
8,000. 
8,500. 
9,000. 
9.500. 
10,000. 
10,500. 
11,000 . 
11,500. 
12,000. 
12,500. 
13,000. 
13.500- 
14,000. 
15.500. 
15,000. 
15.500. 
16,000. 
16,500. 
17,000. 
17.500. 
18,000. 
18,500. 
19,000. 
19,50c. 
20,000. 
20,500. 
«i,ooo. 
21,500. 
22,000. 
22,500. 
23,000. 
23,500. 
24,000. 
Totals . 
13 12 10 
r*=— o.o88±o.039 
