[ 269 J 
feflened in quantity, and materially injured in their 
properties, will point back to the fufferings the animals 
have undergone; while, in their conftitutions, will 
have been left the feeds of many diforders of the 
lungs, the brain, and the fkin, feldom at their confum- 
mation, afcribed to their proper and original fource. 
To attempt inveftigating the caufes why the tur- 
nip-rooted cabbage has not, in our prefent improved 
“fyftems of culture, made a further progrefs, would 
‘be entering on a field too Jarge for this memoir. 
They are many, and fome of them obvious; but 
withal (however myfterious) fo formidable, as pro- 
bably not to be removed, or fhaken, by any thing 
that could be faid init; and may, perhaps, fometime 
. in future be thought a fit fubje& of enquiry with 
the Board of Agriculture. 
Thofe u/ually urged are, firt, That the toughnels 
of its coat occafions, to fheep fed on it, a prema- 
ture lofs of their teeth;—fortunately, againft this, 
affertion only can be brought. * The writer, during 
more than twenty years uninterrupted experience, 
wherein he annually fed from 3 to 700 fheep, does, 
not recollect more than one inftance where he be- 
lieves the lofs of a tooth was fairly imputable there- 
to. It was, however, alwaysalaw with him, prior 
to feeding, to pull up the roots, and divide them in 
a manner that will be hereafter defcribed. 
Secondly, It has been faid, that its fanged roots, 
carrying much dirt, are found difficult to be con- 
fumed, 
