256 Quarterly Reports of the Chemical Committee. 
microscopical examination proved that the cake was made from 
badly screened linseed, and contained an undue proportion of 
sand, in addition to a number of small weed-seeds, which ought 
to have been removed by screening from the seed before it was 
pressed into pure linseed-cake. 
The cake was bought and invoiced as pure linseed-cake (with 
warranty). 
The dealers when ordering it of its presumed makers (and 
who had advertised it as pure linseed-cake of their own brand, 
and presumably, therefore, as of their own make, with warranty), 
expressly told the latter " not to send it unless they were quite 
sure it would bear the test of Dr. Voelcker's analysis;" and, on 
being informed by their customer of the result of that analysis, 
immediately sent him cake of other make in exchange, which 
did stand that test. 
The presumed makers, on complaint from the dealers, bound 
as they were by their own warranty to the latter, could not do 
otherwise than take back the cake, though they said they knew 
it was pure and unadulterated, and should not have been likely 
to have sent it in face of the dealer's specific order had it been 
otherwise. At the same time, however, as they admitted that it 
was not made at their own mill, how they could possibly know 
it was pure it is difficult to understand. 
Dealers acting carefully and honestly by their customers, as 
these did. Would not care to have their names mixed up in a 
case of this kind, and on this account the names of both dealers 
and makers are purposely omitted. 
The case, however, shows the necessity of buying with war- 
ranty, and particularly testing by analysis (the warranty in this 
case protected the innocent dealer as well as his customer), and 
of getting supplies from the actual makers. 
2. Another sample of cake bought as pure linseecl-cake at 
lOZ. 5s. (for a large lot in summer to be delivered in October), 
was sent by Mr. Fred. Lister, Babworth, Retford, Notts, and on 
analysis was found to have the following composition : — 
Moistm-e 11-32 
Oil 11-70 
*Albuiniiious compounds (flL'sh-forming matters) .. 28-63 
Mucilage, starch, and digestible fibre 31-10 
Woody fibre (cellulose) 8-40 " 
-f Mineral matter (ash) 8-85 
100-00 
♦ Containing nitrogen 7 4-58 
t Including sand 3 '55 
