July 8, 1918 Percentage of Fat in Cow's Milk 
93 
Table XVII. — Correlation between the percentage of fat in cow's milk and the yield — 
Registered Ayrshires 3 to 4 years of age 
Percentage of fat 
3- 0 
3- I 
3" 2 
3' 3 
3* 4 
3* 5 
1 6 
3* 7 
3' ° 
3-9 
4.0 
4. I 
4. 2 
4- 3 
4. 4 
4* 5 
4. 0 
4- 7 
4. 0 
Total. 
6,500 
I 
I 
I 
4 
4 
2 
3 
2 
I 
I 
3 
2 
3 
3 
2 
I 
2 
I 
I 
5 
5 
6 
1 
3 
4 
I 
I 
I 
I 
5 
10 
24 
23 
35 
20 
17 
19 
ir 
7 
3 
3 
3 
4 
I 
3 
2 
2 
7,000 
X 
2 
3 
3 
I 
3 
I 
2 
3 
4 
2 
I 
I 
I 
2 
3 
2 
6 
2 
2 
3 
2 
I 
I 
I 
3 
3 
4 
I 
2 
I 
I 
I 
2 
I 
I 
8,000 
I 
I 
2 
I 
I 
3 
I 
2 
I 
I 
I 
5 
I 
I 
2 
I 
2 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
I 
13.500 
I 
I 
I 
I 
I 
I 
I 
I 
Total. 
I 
0 
0 
4 
10 
7 
14 
18 
20 
22 
28 
19 
17 
16 
6 
7 
I 
I 
1 
192 
T= — 0.093 ± O.O4S 
Table XVIII. — Correlation between the percentage of fat in cow's milk and the yield — 
Registered Ayrshires 4 to $ years of age 
Percentage of fat 
3.1 
33 
3-3 
3-4 
3-5 
3.6 
3-7 
3.8 
3-9 
4.0 
4.1 
4.3 
4-3 
4.4 
4-5 
4.6 
4.7 
7.500 
3 
3 
3 
5 
4 
3 
z 
z 
I 
I 
3 
4 
a 
3 
4 
3 
3 
Z 
I 
6 
3 
z 
4 
z 
z 
z 
3 
5 
3 
3 
z 
3 
I 
3 
4 
z 
3 
z 
z 
4 
3 
a 
z 
3 
z 
I 
3 
3 
z 
z 
2 
8, 500 
I 
I 
4 
z 
3 
z 
z 
7 
9.500 
Z 
I 
I 
I 
z 
4 
3 
I 
z 
I 
z 
z 
I 
I 
13,000 
z 
z 
z 
13.500 
z 
Z 
z 
z 
14, 500 
z 
15.S00 
17. soo 
I 
Total 
I 
0 
z 
9 
7 
13 
16 
21 
19 
Z9 
18 j 16 
7 
4 
5 
3 
I 
r= — o.o23±o.oS3 
