May. 5 # 1923 
Fatty Acids in Butter Fat 
389 
The total fatty acids in Bg, from cows receiving com oil, increased 
0.341 per cent as compared with Bg, and their neutralization number 
decreased 14.593 mgm.; the free fatty acids increased 0.931 per cent; 
the soluble acids decreased 1.131 per cent, and their neutralization 
number, 65.274 mgm.; the insoluble acids increased 1.472 per cent, and 
their neutralization number decreased 7.416 mgm.; and the glycerol 
decreased 0.825 per cent, a change similar to but more marked than in 
the previous period. 
The total fatty acids in Bjo, from cows receiving soybean oil, increased 
0.277 per cent, and their neutralization number decreased 13.521 mgm.; 
the soluble fatty acids decreased 1.588 per cent, and their neutralization 
number 37.606 mgm.; the insoluble fatty acids increased 1.865 per cent, 
and their neutralization number decreased 7.169 mgm.; and the glycerol 
decreased 0.670 per cent, a change slightly different but approximately 
the same as in the previous case. 
Table XXVIII .—Weight and analysis of fractions {ethyl esters) 
• Bg 
Fraction No. 
Range of 
fraction. 
Weight of 
fraction. 
Saponification 
number. 
lodin number. 
Ethyl oleate. 
*C. 
± 70 to 90 
90 to 153 
153 to 207 
207 to 251 
251 to 290.5 
290.5 to 316.5 
316-5 to 334-5 
Gm. 
Mgm. 
<*1,387.856 
387-750 
367-367 
288.957 
245-752 
217.611 
199.906 
Per cent. 
3 -.. 
5 . 
6 . 
Total. 
4- 7042 
5- 2264 
4.8993 
15.8992 
53-9656 
131-8435 
3-158 
5-541 
10.324 
13-679 
16.639 
22.974 
3.862 
6.776 
12.625 
16.727 
20.347 
28.094 
216.5382 
B4 
4 - 70 to 00 
® 1 . 44 . 1 .076 
90 to 138 
4-4956 
403.891 
1-939 
2.371 
3 . 
138 to 201 
5.0411 
366.749 
4-526 
5.534 
201 to 245 
4.8221 
275.390 
9-817 
12.005 
245 to 274.5 
15-5843 
239.613 
12-513 
15.301 
274.5 to 303.5 
53-5750 
219.938 
14-983 
18.322 
7 .. 
303.5 to 327.5 
132.2908 
202.036 
22.110 
27.037 
Total. . .... 
215.8089 
Be 
±70 to 00 
. <;<4.102 
90 to 138.5 
4-6859 
405.759 
3.130 
3^838 
3.. 
138.5 to 192 
5-1400 
362.188 
6.403 
7-830 
192 to 238 
4.8029 
270.068 
14.655 
17.921 
5.. 
238 to 284 
15-5928 
231.380 
19.448 
23.782* 
284 to 314 
53-7289 
209.791 
24.451 
29.900 
7. 
314 to 328 
103.0110 
195.994 
32.311 
39-511 
Total. 
186.9615 1 
1 
• Total alkali-consumms: power of the fraction. 
39362—23 - 4 
