100 GROUND FEEDS. 
A typical case of its action may be cited. A sample of 
shorts was received from a farmer, together with com- 
plaints that two of his pigs were already dead, 
and that the same would have been true of 
all the rest had he not discontinued the use 
of the feed. On casual examination, the sample appeared 
excellent. The microscope, however, revealed the pre- 
sense of quantities of Mustard seed, very finely ground.” 
The seed, which must have been deliberately added to the 
A Case of 
Poisoning 
Fig. 22.—Seeds of Wild Mustard—Brassica arvensis. Five times 
natural size. 
shorts, had served two purposes. In the first place it was a 
cheap adulterant, and secondly, it raised the fat and pro- 
tein content of the feed as shown by chemical analysis. 
A request for further information brought the follow- 
ing reply from the farmer: “The pigs came up to the 
trough and after feeding would fall back in a fit'and 
kick about two minutes, then jump up and stagger a little. 
After wandering around the pen for a few days 
they died, eating little in the meantime. They showed 
agony when dying, kicking and frothing at the mouth.” 
_ *The complete separation of weed seeds is an essential prelim- 
inary to the milling of wheat, as otherwise a good grade of flour 
is not produced. Bran and shorts are therefore pure when they 
come from the mill. 
