40 
Pure and Mixed Linseed-Cakes. 
The cakes No. 1 and No 2 were adulterated with bran ant^ 
pollard, and Nos. 3 and 4 with rice-meal. All were poor in oil 
and in albuminous compounds. 
The husk of rice contains much silica, and hence linseed-cake 
largely adulterated with rice-shudes or inferior rice-meal, on 
burning in a platina-dish, produces an ash which contains much 
silica. Cakes adulterated with cotton-cake, earth-nut -cake, 
hemp-cake, and other cakes made from seeds with a hard husk, 
contain more than an average proportion of woody fibre. In 
illustration of this I have selected from a large number of 
analyses of adulterated cakes the following : — 
Table XIII. — Compositiox of Lixseed-Cakes adulterated with Cottox and 
Earth-nut Cake, Hemp-Cake, and Olive-Cake. 
No. 1. 
No. 
2. 
No. 3. 
No. 4. 
11-54 
10 
18 
9-45 
10-76 
Oil 
10-U 
7 
61 
13-39 
8-6Gr 
* Albuminous compounds (flesh-forming) 
22-56 
24 
68 
28-56 
19-69- 
Mucilage, sugar, and digestible fibre 
29-78 
31 
21 
22-85 
33-9',r 
20-70 
19 
88 
20-30 
18-84 
t Mineral matter (ash) 
5 -23 

6- 
44 
5 '45 
8-12 
100-00 
100 
00 
100-00 
100-01) 
3-61 
3- 
35 
4-57 
3-15 
•85 
l-( 
)8 
1-48 
3-24 
The cake marked No. 1 was largely adulterated with cotton-cak-2 
and earth-nut-cake. No. 2 was much adulterated with hemp- 
seed-cake and some cotton-cake. No. 3 was much adulterated 
with earth-nut- cake, bran, rice-meal, and a little cotton-cake. 
This cake was sold as best English linseed-cake, and the 
gentleman who sent it to me for ana-lysis wrote as follows: — "1 
have reason to believe the cake contains some ingredient highly 
injurious to stock, as 1 have within the last five weeks lost 
thirty lambs which have been fed on it." The condition of the 
cake was not good, and it is more likely that it did injury to 
the lambs by reason of its bad condition, than on account of any 
positively poisonous ingredient which it may have contained and 
which I failed to detect. 
No. 4 was a mixed linseed-cake, composed of linseed, carob- 
bean-meal, cotton-cake, and olive-cake. 
Not long ago I received for examination a sample of cake, 
which was sold at a fair price as genuine linseed-cake, and whichi 
