ON NIMROD’S OPINIONS KP:SPECTING ROARING. 61 
The first thing that I did was to examine some of those that had 
died, and I found the rumen in every instance filled with wheat, 
barley, and straw; the abomasum highly inflamed, as well as the 
bowels; the spleen had the appearance of a mass of coagulated 
blood, its structure being entirely destroyed; the lungs, in most 
of the cases, presented a healthy appearance, as did also the liver. 
Fifty-eight died in the course of five days after eating the wheat. 
The others were bled, and half a pint of linseed oil given to each, and 
they recovered, but many of them have since thrown their lambs. 
OBSERVATIONS ON NIMROD’S OPINIONS RESPECT¬ 
ING ROARING, AND THE DIET AND SHOEING OF 
THE FRENCH HORSES. 
By Mr. JOSEPH Sewell, V.S., Strand, London. 
I HAVE always felt amused and interested in the perusal of the 
able and sportsman-like writings of Nimrod, particularly when he 
is engaged in his favourite theme, the summering of hunters; 
and I find in his paper on various subjects, in your September 
number, that he is still unwearied in his exertions, and endeavour¬ 
ing to convince the sporting world of the injurious effects which 
attend the turning-out system. The facts which he has there stated 
would appear to shew the evils resulting from such a practice, and 
which farther experience seems to confirm. I allude to the number 
of roarers which he has detected in the various studs of hunters that 
he has lately visited. 
He naturally asks the cause of all this. It cannot be the grass- 
field alone; although, doubtless, the system of turning-out, which 
is so generally adopted, when combined with a predisposing cause, 
is too favourable to the development of the disease in question, 
and which, probably, might not appear were the animal summered 
on Nimrod’s plan. With me it is a matter of doubt whether 
roaring is ever found to originate from turning-out alone, unless 
under very peculiar and rare circumstances. We must have alter¬ 
ation of structure and function in either the larynx or trachea, 
or both, to a certain extent, in order to constitute a confirmed 
roarer. The terminations of various inflammatory complaints of 
the respiratory organs, as catarrhal sore throat, &c., toy often leave 
the foundation of the complaint. The influenza, too, has laid the 
seeds of roaring in many instances, and may have done so in some 
of the cases referred to by Nimrod. The alterations of structure 
are not to be immediately detected on the termination of any in- 
VOL. XIII. " I 
