128 Quarterly Report oj the Chemical Committee , March, 1894 . 
cerning linseed cakes the purchases were made with a distinct 
guarantee of purity. 
1. In the first instance, tons of “linseed cake ” were bought 
from a local dealer, who signed one of the Society’s “ contract notes ” 
guaranteeing the purity and good condition of the delivery, though 
it turned out that he had not the maker’s authority for so doing. 
The cake was, after analysis, described by Dr. Yoelcker as “a bad 
cake, containing a large quantity of weed seeds, as well as other 
impurities. Rape and spurrey are present in abundance, also 
mustard, polygonum, cockle, &c., besides over 3 per cent, of 
sand.” 
2. In a second case, a linseed cake was found to be “ mouldy 
and acid, and not in fit condition for feeding.” 
3. A delivery of cake sold as “ linseed cake ” was found on 
analysis to be composed partly of linseed, partly of locust bean. 
The vendor admitted the mistake to be his in transhipping another 
quality of cake for that ordered, and he allowed 10s. a ton on it. 
4. A delivery of linseed cake, costing 81. 10s. per ton in Liverpool, 
was found to contain no less than 6| per cent, of sand. The pur- 
chaser would not give particulars as to the transaction. 
5. A delivery of cake manufactured in Hull was sold by a small 
local vendor to a member of the Society, who received with it a 
guarantee of its containing “12 per cent, linseed oil.” Analysis 
showed it to have 10'34 per cent, only of oil, and that this oil was 
not derived only from linseed, but also from rape, spurrey, cockle, 
mustard, and numerous other weed seeds, and that there was rice 
husk and over 4 per cent, of sand in the cake as well. On inquiry it 
proved that the vendor had given the guarantee in ignorance, and 
had received none from the manufacturers. 
6. A delivery of cake sold merely as “ oil cake ” contained 5 per 
cent, of sand. 
7. A delivery purchased as “ containing from 10 to 12 per cent, 
of oil ” (the vendor concluding the oil to be linseed oil) was merely 
invoiced as “ oil cake,” and though costing as much as pure linseed 
cake, viz., 81. 10s. per ton, was found to contain, besides linseed, a lot 
of rape, earth-nut, and other weed seeds. 
8. A purchase of £-inch bones, on a guarantee of their contain- 
ing 3 35 per cent, of nitrogen and 40 to 45 per cent, of phosphates, 
was sold at 6 1. 15s. per ton, and was found, after analysis, to have 
only 2’91 per cent, of nitrogen and 5354 per cent, of phosphate of 
lime, being thus a mixture of raw and boiled bones, and not J-inch 
