
319 
Total Albuminoid Amides. 
Nitrogen. nitrogen. 
(oh ce Te ot i AC aie 1.960 1.410 .550 
Same, heated in bin.....--.-- 1.892 1.410 ~ ,482 
To what extent oxidation may take place in the oil of corn is shown 
by a few experiments made for the purpose. The corn oil used was 
perfectly soluble in ether. 2.1014 and 2.5836 grams of oil were put 
in small fat flasks and kept at a temperature not exceeding 98° C. for a 
month and a half and frequently weighed. A few of the weights 
are given to show the gradual change in weight. 
Aug. 7 2.1014 grams 2.0836 grams, 
a4 8 ¢ 
2.0982. ¢ 2.5796. < 
1061 (1 QALO6s, fF 2.5922 << 
KUM ni hOdG.Lgsde 2.6468 << 
Sees Roath’ Cab cuaskt 2.6612 « 
a Loin §20 304 8° 2.6714... 
Stale fyiprtolty Boor) oh 2.6704, .< 
ae Gan meal fata se 2.6648 . « 
831 9.1602 “ 2.6538. « 
Sept. 5 2.1562 « 2.6484 , << 
chi IRDA Nea cas pa 2.6440 << 
FR BM OA ABQ | 6 2.6368 << 
Wor pee tosaiy) #6 26272 ines 
ceBaoy | Migh) 398 i ¢« 2.6192 << 
The loss in weight on Aug. 8 was probably due to moisture and 
volatile matter driven off. For 16 days the oil continued to increase 
in weight during which time it changed considerably in color, be- 
coming darker and although perfectly fluid at the first it had now 
become firm in the flask and even when warm would not flow—a 
resin. At this stage it was but slightly soluble in ether, and nearly 
insoluble in acid or alkali of the strength used in fodder analyses for 
crude fiber. ‘The increase in weight was in one case 3.73 per cent. 
in the other 3.56. After this there was a gradual diminution in 
weight by prolonged heating. 
To further study this oxidation, Aug. 24, 22.6710 grams of corn 
meal from Stowell’s Evergreen, on a watch glass was put in the dry- 
ing oven and on the following day when the moisture had been driv- 
en off its weight was 20.2305 grams. It reached its maximum on 
Aug. 31, 20.2870 grams, and its minimum on Sept. 11, 20.134 grams. 
A determination of the ether soluble fat was made at the beginning 
of the test and again at the close. 
Aug. 24, 7.72 per cent. 
Sept. 18, 5.31 ‘b 
By prolonged drying of the meal the per cent. of fat soluble in 
ether was very materially decreased, and this oxidized fat is insolu- 
ble in alkalies of the strength used for crude fiber determinations. 
Meal kept for a long time shows a similar oxidation in the fat, a 
smaller per cent. is soluble in ether, as the following shows : 
Feb. 26, 1884, 2.79 per cent, 
Aug. 6, 1885, 2.25 2 
