Quarterly Reports of the Chemical Committee, 1886. 321 
Oil 
" December 15th, 1885. 
No. 1. 
No. 2. 
, 11-72 , 
.. 10-87 
, 10-10 . 
.. 12-06 
^0 to 
OA • Q1 
OO ZD 
OO oU 
IZ Zo 
5-83 . 
,. 8-23 
100 00 
100-00 
4-28 
3-33 
3-39 
• Containing nitrogen 
t Including sand 
" No. 1 is a pure cake, but No. 2, though it gives a good percentage of oil, 
is a grossly adulterated cake, coutaining a very large amount of locust-bean, 
and in addition niger-seed, polygonum, and starchy bodies. It is in conse- 
quence very poor in nitrogen — Yours faithfully, 
" J. Augustus Voelckee." 
Twelve tons of No. 2 cake had been purchased at 81. 5s. per 
ton. In further reply, Mr. Mannington wrote : — 
" As I did not buy it for ' pure ' cake I do not think it right to give the 
agent's name. It is more adiilterated than I expected, and I don't buy any 
more." 
3. Mr. W. E. Hill, of Roche Abbey Farm, Rotherham, for- 
warded on December 12th, 1885, a sample of linseed-cake 
branded " pure," one ton having been bought at 8Z. Is. 6d. 
delivered. 
Dr. Voelcker reported : — 
Moisture 13-25 
Oil 9-46 
* Albuminous compounds 22-68 
Mucilage, &c 37-50 
Woody fibre 8-16 
f Mineral matter 8*95 
100-00 
* Containing nitrogen 3 • 63 
t Including sand 4-15 
"A dirty impure cake of low quaUty. " J. Augustus Voelcker." 
This cake contained a large amount of polygonum-seed and 
starchy bodies, and tasted and smelt of rape-seed. In reply to 
further inquiries, Mr. Hill wrote : — 
" December 19th, 1885. 
Dear Sib, — In reply to yours I only had a ton of linseed-cake for trial, 
and, as the manufactiuers are friends of mine, I do not care to expose them. 
I find they make a cake from seed of 95 per cent, purity. Of course I shall 
not have any more of the same brand. 
" The invoice is written out " pure" linseed-cake. — I am, yours faithfully, 
" W. E. Hill." 
" Dr. J. A. Voelcker." 
VOL. XXIIT. — S. S. Y 
