EFFECT OF PRESSURE ON THE FEET OF HORSES. 183 
the points of the heels, which always from pressure incline 
inwards . The descent of the hypothenuse ,3 of an inch gives 
pressure on the frog by descent of the navicular bone, less 
the compressibility of the parts; the external descent, as shewn 
in Mr. Gloag’s experiments, being about one-fourth of an inch 
in a six inches wide hoof. The descent of the hypothenuse of 
which is ,4 of an inch, or base 3 inches ,2, perpendicular 1 
inch ,5 less 1 inch ,1 equal to 3 inches, ,6, the square of which 
is 9 ,36, equal to the square of the hypothenuse. 
Now, Sir, I am unable to explain this in a more simple man¬ 
ner. When Mr. Reeve and I agree, which I make no doubt we 
shall, I will afterwards endeavour to put it into shop shape, 
i. e., by projection, so as to be understood by any reader of 
The Veterinarian. The calculations would vary in every 
horse : these are for hoofs with a moderate degree of shelving. It 
will be seen that, as veterinary surgeons’ draftsman, I could not 
render the results of any person’s experiments otherwise than 
they are. These principles are not mine, but “ those by which 
the universe is regulated and governed.” 
I have the pleasure to send you copies of diagrams, in du¬ 
plicate, of sections made by myself—one for Mr. Reeve; but, 
perhaps, Mr. Reeve will not favour me with a reply, though I 
believe your Journal is free to fair comments on either side of 
this question of the physiology of the foot. 
I have here anticipated Mr. Reeve’s reply; but having since 
seen his reply to me in your last number, I have only now to 
assure him, that the manner in which I have done this is a 
warrant that my communication, through you, was no other 
than a friendly one. I am further gone than Mr. Turner—I am 
off the stage ; nevertheless, I trust I am sufficiently interested 
in the advancement of that profession from which, I may say, 
I still derive my daily bread. Trusting that he will change hiis 
opinion of me, I remain, Sir, 
Your’s faithfully. 
P.S—I could not send by mail without risk of breaking the 
cast still more. 
*** Had not this paper been overlooked by us, it would have 
been inserted in our March number. We beg to apologize to 
“ Amicus” for such omission.—E d. Vet. 
