894 Miller. — A Physiological Study of the 
by Peters 1 for the seedlings of Cucurbit a, Pcpo> and by Schmidt 2 for the 
sunflower and other seedlings. 
TABLE I. 
Chemical Nature of the Oily Reserve. 
Cotyledons . 
Seeds 
Stage 
I 
Stage 
II 
Stao-e 
III 
Stage 
IV 
Stage 
V 
Dry Weight of the Cotyledons of 100 Seedlings 
4*884 
3*153 
2.785 
2.319 
2*02 I 
1*621 
Ether Extract (Percentage of dry material) 
54 * 1 
52.6 
49.2 
36.0 
l6-8 
8*7 
Grammes of Ether Extract per 100 Cotyledons 
2*642 
1.658 
1.370 
0.834 
o -339 
0-141 
Percentage of the Original Oil present 
— 
62.7 
51*8 
31-8 
12.8 
5*3 
Acid value of the Ether Extract 
1.6 
i *5 
4.6 
27-5 
66-8 
Percentage of Free Fatty Acid in Ether Extract * 
0-008 
0.009 
0-009 
2*3 
13.8 
33*5 
Saponification Value of Ether Extract 
189.3 
190.9 
192-1 
l8 4-3 
186.1 
204.2 
Saponification Value of the Neutral Oil 
188.4 
189.1 
190*6 
188.2 
184.4 
226*1 
Total Insoluble Acids of Ether Extract 
95*4 
96-0 
95-7 
93.6 
87.6 
84.8 
Total Insoluble Acids of the Neutral Oil 
94.6 
95.2 
94-7 
95*9 
88.9 
Total Soluble Acids of Ether Extract f 
0.005 
0.005 
0*007 
0.005 
0-008 
4*5 
Total Soluble Acids of the Neutral Oil f 
0.005 
0.003 
0-006 
0-003 
0*002 
3.0 
Iodine Number of the Ether Extract 
125*5 
126.4 
I2 4*5 
1:25.8 
I 20-1 
m *7 
Iodine Number of the Neutral Oil 
124.9 
126-0 
124.1 
1 26-0 
H 9 . 9 
1 1 1-9 
Acetyl Saponification Value of Ether Extract 
222.7 
225.0 
225.1 
215.0 
236*3 
263-6 
Acetyl Value of Ether Extract 
40*1 
39.0 
40*6 
38.2 
36*5 
37*5 
TABLE II. 
Chemical Nature of Ether Extract. 
Hypocotyls and Roots. 
Stage 
I 
Stage 
II 
Stage 
III 
Stage 
IV 
Stage 
V 
Dry Weight of the Hypocotyls of 100 Seedlings 
0.605 
0.885 
1.21 
1*52 
2.17 
Ether Extract (Percentage of dry material) 
9.9 
7*4 
3*8 
3 *i 
1.8 
Grammes of Ether Extract per 100 Hypocotyls 
o*o6o 
0-065 
0.046 
0-047 
0-040 
Acid Value of Ether Extract 
18.2 
24.0 
27.1 
58*3 
97.8 
Percentage of Free Fatty Acid in Ether Extract* 
9.1 
120 
13*4 
26.4 
49. r 
Saponification Value of Ether Extract 
190.3 
189.2 
198.4 
236.9 
238*3 
Total Insoluble Acids in Ether Extract 
89.6 
85.6 
86.5 
67. r 
57*2 
Total Soluble Acids in Ether Extract f 
1*0 
i*6 
1.8 
16. 1 
18.5 
Iodine Number of Ether Extract 
IT 7*7 
118.8 
96*1 
72.6 
48.3 
Acetyl Saponification Value of Ether Extract 
251.4 
300-0 
274.8 
Acetyl Value of Ether Extract 
71.2 
114-0 
95 -i 
* 
— 
* Estimated as oleic acid. f Estimated as butyric acid. 
Acid Value. By the acid value of an oil is meant the number of milli- 
grams of caustic potash necessary to neutralize one gramme of the oil. It is 
1 Peters, Ed. : Zur Keimungsgeschichte des Kiirbissamens. Versuchs-Stationen, iii, 1861, 
PP . 1-9. 
2 Schmidt, R. H. : Ueber Aufnahme und Verarbeitung von fetten Oelen durch Pflanzen. Flora, 
lxxiv, 1891, p. 300. 
