T1IE 
VETERINARIAN. 
VOL. XXXVII. 
No. 442. 
OCTOBER, 1864. 
Fourth Series. 
No. 118. 
Communications and Cases. 
A REMARKABLE CASE OF OSSIFICATION OF 
MUSCLE. 
By Professor Yarn ell. Royal Veterinary College. 
The pages of the Veterinarian are already indebted to 
Mr. Clement Stephenson, M.R.C.V.S., of Newcastle-on- 
Tyne, for some very valuable contributions ; but the morbid 
specimen to which the following observations refer is certainly 
the most remarkable of its kind that has ever come under my 
notice. It consists, as will be seen by a perusal of the subjoined 
letter, of the flexor brachii , the upper part of the radius , and a 
portion of the tilna, the former being completely transformed 
into osseous tissue, a circumstance, as far as I am aware, of 
very rare occurrence. Mr. Stephenson writes as follows : 
Newcastle-om-Tyne j Aug . 19, 1864. 
Dear Sir, — I have just sent you by rail the patho¬ 
logical specimen which I showed you on your recent visit to 
Newcastle. I am sorry to say I cannot give you the history 
of the animal from which it was taken. It is about six 
months since that a horse-slaughterer in this town brought 
me what he called a “double bone ; 55 but which I found to be 
the humerus, radius, and the flexor brachii muscle, the mus¬ 
cular fibre of which had been completely removed and replaced 
by bone. A space, however, existed between the posterior 
surface of the flexor and the anterior surface of the humerus, 
and also a free motion to the shoulder- and elbow-joints. The 
xxxvii. 44 
