244 Annual Report for 1906 of the Consulting Chemist. 
A. Feeding Stuffs. 
1 . Linseed Cake. 
It has been mentioned that one change effected by the new 
Fertilisers and Feeding Stuffs Act is that, in future, a guarantee 
of composition will have to be given with respect to all pre- 
pared feeding stuffs — linseed, cotton, and all compound cakes 
and meals, for example. This guarantee is to be confined to 
a statement of the percentages of oil and albuminoids. That 
something of this kind will work advantageously to the pur- 
chaser is shown by the setting out of the following analyses 
of four samples of linseed cake which had been offered to 
a member at prices differing but little from one another, though 
the analyses show that the cakes were very different in quality : — 
A 
B 
C 
13 
Moisture .... 
12*81 
13*25 
11*83 
9-96 
Oil . .... 
9*46 
9*08 
9*09 
11*31 
Albuminous Compounds 
(flesh-forming matters) . 
25*44 
23*50 
28*38 
37*44 
Mucilage, sugar, and diges- 
tible fibre 
36-81 
42*75 
36*52 
29*63 
Woody fibre (cellulose) 
7*36 
6*39 
7*79 
5*69 
2 Mineral matter (ash) . 
8*12 
5*03 
6*39 
5*97 
100*00 
100*00 
100*00 
100*00 
1 Containing nitrogen . 
4*07 
3*78 
4*54 
5*99 
2 Including sand . 
1*99 
0*40 
0*65 
0*94 
A cost SI. 6s. 8 cl. per ton, delivered. 
* B ,, 81. 15s. 0 d. ,, ,, 
C „ 81. 5s. 0 d. 
D ,, 81. 5s. 0 d. ,, „ 
Of the four cakes, “ A ” was a very impure one, containing, 
as it did, mustard seed, cockle seed, and niger seed, with 2 per 
cent, of sand ; “B” was of fair purity ; “C” hardly as good ; 
while “ D,” though the lowest-priced cake, was quite pure and 
of much the highest quality. 
A similar difference of quality, though prices were much 
alike, was found in the case of a member who sent two linseed 
cakes for oil determination, the results being : — 
A B 
Percentage of oil . . 11*43 6*60 
Price per ton . . .81. 10s. 81. 5s. 
Moreover, while u A ” was quite pure, “ B ” was far from 
being so. 
As previously indicated, the new Act should do much to 
remedy these anomalies. 
