MS 
EDITORIAL 
1859 and finally in dogs by Dr. Ball. What a strong link in the 
chain of comparative pathology. 
The case of Prof. Dejerine, however, was of another nature, 
and although the first of its manifestations had justified the diag¬ 
nosis, it was modified into that of intermittent spinal claudication 
on account of specific nervous symptoms due to lesions of the 
spinal cord, and which, on account of their specificity, are not de¬ 
tected in animals. According to this, human beings may mani¬ 
fest intermittent peripheric lameness, but animals cannot have 
intermittent spinal claudication. 
* 
* * 
Williams' Operation for Roaring. —When Prof. Wil¬ 
liams came to England to demonstrate his operation for roaring, 
he certainly had made up his mind that it was there, that it could 
be tested more extensively in its results, it being an admitted 
opinion that in England the number of roarers was larger than 
anywhere else. This opinion needed a statistical proof, and this 
has been given to a certain extent by a communication of the 
Veterinary Journal, where Prof. Hobday has stated that since 
“ Dr. Williams came to England he had operated upon more than 
520 horses.” It is doubtful if any other practitioner can make a 
similar claim. 
In this article of Prof. Hobday, however, the object was not 
to give the number of horses upon which the operation had been 
performed, but to .answer the important question of the results 
and to show that if this operation was beneficial, it would remain 
permanently so. And then a list of over 100 of the cases op¬ 
erated is given, showing the date of the operation, the condition 
of the horses before operated, 'the result on first trial, and then 
the result after a later period, varying between 18 months to 2 
years. Of these 100 cases, 55 are quoted as excellent, 45 only as 
satisfactory, but yet with these last, it seems by the reading of 
the notes relating to them, that they might just as well be con¬ 
sidered also excellent as well as the other 55. 
