COMMUNICATION FROM B. CARTLEDGE, M.R.C.V.S. 701 
you state that it is notorious that ahorse shall show lameness 
for the first time a clay or two after he has been new-shod, 
he having been standing idle some time previously, though no 
fault can in any way be attached to the shoeing. The very 
fact of the horse having been new-shod strengthens my 
argument that it is a strain, more particularly if he has been 
resting. During rest there is a want of sufficient secretion of 
synovia in the joints and bursae; this dry condition renders 
the parts liable to give way to injuries from causes that are 
trivial in themselves. Now, how does the shoe produce this? 
Simply because a new shoe has a sharp edge to its ground 
surface at the toe, and this by increasing, however so little, 
the resistance to the action of the flexor muscles to raise the 
foot from the ground, this increase of resistance is fatal to 
the integrity of the flexor tendon at its weakest part, and 
this is where it passes over the navicular bone. 
1 remain, my dear sir. 
Yours most sincerely, 
W. Williams, 
Hon. Sec. Yorkshire Veterinary Medical Society. 
Tiios. Greaves, Esq., 
President of Lancashire Veterinary Medical 
Association , Manchester. 
COMMUNICATION FROM B. CARTLEDGE, 
M.R.C.Y.S., SHEFFIELD. 
Market Street; 
Sept. 23, 1864. 
Gentlemen, —Mr. Henry Jackson, F.R.C.S., to whom I 
showed the ivory tumour, an account of which appeared in 
the Veterinarian for February last, p. 81, writes the enclosed. 
You are at liberty to make what use of it you think proper. 
I may add that Mr. Jackson takes great interest in patho¬ 
logical specimens of all kinds, and he has frequently done 
me the pleasure of seeing cases of peculiarity with me. 
I am, Gentlemen, 
Very faithfully yours, 
B. Cartledge. 
To the Editors of 1 The Veterinarian * 
