16 
Pure and Mixed Linseed- Cakes. 
tried in our law-courts in which the plaintiffs obtained verdicts 
for damages caused by feeding cattle upon cake which turned 
out to be Indian rape-cake, it is now seldom sold for feeding 
purposes, but is either bought for manuring purposes, or em- 
ployed for adulterating linseed-cake or preparing mixed feeding- 
cakes. 
The best rape-cake imparts a turnip-like flavour to the linseed- 
cake with which it is mixed, and for that reason alone reduces 
the practical value of it. 
From a large number of analyses I select the following charac- 
teristic ones of three samples of rape-cake : — 
Table V. — Composition of Three Samples of Rape-cake. 
No 
1. 
No. 2. 
No. 3. 
English 
Eape-cake. 
Green 
Germaa 
Eape-cake. 
Indian 
Rape-cake. 
9 
•14 
W82 
12^07 
Oil 
10 
•84 
8-72 
10-31 
* Albuminous compounds (flesh-forming matters) .. 
2S 
•31 
33-81 
34^12 
25 
•84 
28-05 
29^15 
11 
•16 
11-49 
7-38 
14 
71 
7-10 
6^97 
100 
00 
100-00 
100-00 
4- 
33 
5-41 
5-46 
6- 
15 
•j2 
•75 
No. I. represents the composition of a sample of English rape- 
cake, which contained some mustard, and was evidently made 
from dirty seed, as it yielded over 6 per cent, of sand. 
No. II. shows the composition of an excellent sample of green 
(jrerman rape-cake. It will be seen that this cake is fully as 
rich in nitrogenous (flesh forming) matters as the best linseed- 
cake, but is poorer in oil. 
No. III. resembles in composition No. II. This Indian rape- 
cake was given in moderate quantity to a number of store cattle. 
Most of the animals, fortunately, would not touch it, but of those 
who partook of it, 3 died and others suffered more or less from 
the effects of the irritating essential oil of mustard. From a 
J- lb. of cake I obtained enough essential oil of mustard to con- 
vince me that half a cake of it, if not a smaller quantity, might 
kill a bullock. • 
2. Ground-nut or Earth-nut Cake, — Ground-nut or earth-nut 
