MR. MAYHEw’s LETTER TO MR. BARLOW. 665 
opportunity of watching the effect, but found I could not 
keep the tube in, anyhow at all. I therefore set my wits to 
work, and kept him tied up to the rack, till I got a tube made 
according to No. 2, different in shape and material as well, 
being made of copper, tinned over, and curved to fit the neck. 
The plan I adopted has been very successful : and the horse 
has been at work now nearly three years, and works as well 
as any of the others. When he left me, I sent an extra tube 
home with him, so that when one became furred over, the 
parties themselves might insert a clean one. I send you a 
rough drawing of the two kinds. I don’t know whether it 
might be fancy or not, but I certainly thought the copper 
tinned tube did not collect the mucus, &c., so much as the 
plated one. 
The tube I procured in London was rather flat, my own, 
circular. You will see that in the former, the straps are 
attached to each end of the plate. Whereas with mine, the 
plate is deeper, and I only use one strap, which passes through 
both loops, which are placed at the upper part of the plate, 
by which means the plate is kept close to the neck, and the 
tube, being at the lower part, is kept constantly in its place. 
There was one advantage, however, in the plated tube (but 
which may be applied to the other), and that is a slide with 
a screw, to alter the length of the tube from the trachea to 
the plate, in case of much swelling ensuing, and which I 
should get done whenever necessity may require it. My 
sketch is but a rough one, not being much of a hand at that 
sort of thing, so you must take the will for the deed, and if it 
is worth anything, deal with it as you like, and 
Believe me, 
Yours truly. 
MR. MAYHEW’S LETTER OF REJOINDER 
TO MR. BARLOW. 
To the Editor of c The Veterinarian .’ 
Sir, — The letter from Mr. Barlow, published in your last, 
is more conspicuous for an assumed air of animal spirit than 
remarkable for the delicacy of its style, the purity of its 
diction, or the poignancy of its wit. The effusion commences 
with an allusion to “ the wonderful story of a heart.” I must 
imply the allusion to refer to a communication of mine, which 
