196 
bulletin oe The bureau OE EISHERIES. 
The values for the other vegetable oils are so near those of the fish oil that great value 
can not be placed in this test. Reference may be made to the work of Mcllhiney ® for a 
method of examining China- wood oil. 
Index of 
Acid number. 
Saponification number. 
Iodine number. 
Oils. 
refraction 
at 25®. 
I 
2 
Aver- 
age. 
1 
2 
Aver- 
age. 
I 
2 
Aver- 
age. 
Dogfish-liver 
1. 4801 
2. 91 
2. 94 
2-93 
I 9 X -3 
191. 2 
391-3 
122. 7 
120.3 
121. 5 
liinseed 
1. 4805 
3 - 98 
4. 01 
4. 00 
194. 0 
195- 3 
194. 7 
152- 1 
352- 7 
352.4 
Soya-beau 
1-4837 
3. 08 
3. 08 
3 - 08 
196. 7 
196.4 
196. 5 
130. 5 
125. 1 
127. 8 
China- wood 
2S per cent linseed 
I. SS6o 
I. 4948 
I. 47 
3 * 06 
1.49 
3- 06 
I. 48 
3- 06 
190. 1 
191-4 
190. 2 
191. 6 
190. 2 
393.5 
(124.4?) 
129. 2 
137- 1 
137.1 
129. 2 
50 per cent linseed 
I. 4872 
3-41 
3-43 
3-42 
192. 0 
192.4 
192. 1 
337-9 
339 - I 
138.5 
75 per cent linseed 
I. 4870 
3 - 7 S 
3-68 
3 - 72 
191. 0 
194. 9 
193-0 
144-3 
345 - I 
144. 7 
25 per cent soya-bean 
1.4790 
2. 85 
2.85 
2. 85 
X 93 - 5 
193 - 5 
193-5 
123.3 
123. 1 
123. 2 
50 per cent soya-bean 
I. 4819 
2. 94 
2. 92 
2.93 
195.6 
195 - 9 
195. 8 
123. I 
122. I 
122. 6 
75 per cent soya-bean 
I. 4834 
3* 00 
3 * 03 
3- 02 
196. 4 
196. I 
196. 3 
126. 9 
327- 7 
127.3 
25 per cent China- wood 
I. 4997 
2. 60 
2. 72 
2. 66 
193. 2 
193. 0 
193. I 
128. 0 
126. 4 
127. 2 
50 per cent China-wood 
1. 5120 
2. 14 
2. 19 
2. 17 
187. 6 
187. 9 
187.8 
333. 2 
133. 4 
132.3 
75 per cent China- wood 
I- 5363 
1. 78 
I. 76 
I. 77 
188.5 
188. 9 
188. 7 
I 3 S- 6 
136- 5 
136. 1 
a Mcllhiney: A method of examining China-wood oil. Journal of Industrial and Engineering Chemistry, vol. 4, 1912, p. 
496-497. Easton, Pa. 
