RESEARCHES INTO THE CAUSES OF BLINDNESS. 457 
examiners. I leave it to Mr. Gabriel to explain to his fellow 
members of the Council why he left these things unmentioned. 
There seems a very strange contrast between the anxiety expressed 
in the report as to the desirableness of having veterinarians taught 
chemistry, and the systematic and intentional concealment of the 
successful endeavours which the teachers in Edinburgh made, un- 
aided, to communicate the desired instructions. 
With the questions that divide the veterinary profession I do 
not interfere ; but I regret that Professor Dick’s efforts to benefit 
his pupils should have been so misrepresented ; and that the young 
men to whom I found it so pleasant a task to lecture should have 
had their endeavours to acquire a knowledge of a new and difficult 
science so slightingly passed over. 
I remain, your obedient servant, 
George Wilson, M.D., Surgeon, F.R.S.E., &c. 
Lecturer on Chemistry in the Extra Academical Medical School, 
and to the School of Arts, Edinburgh. 
Extracts from Domestic and Foreign Journals, 
Veterinary, Medical, and Agricultural. 
RESEARCPIES INTO THE CAUSES OF BLINDNESS. 
By M. REYNAL, Chief Veterinary Surgeon to the 6th Lancers . 
[Continued from page 411.] 
Part III. 
HISTORY OF A PURULENT OPHTHALMIA WHICH PREVAILED 
AMONG THE REGIMENTAL HORSES. 
In the course of our Essay we have spoken of the miasmata 
which are exhaled by marshy and peaty land, as being among the 
prevalent causes of those diseases that, in the end, produce blind- 
ness. In order to render our subject comprehensible to our 
readers, it is necessary to recur to the position of some barracks, 
and particularly of St. Avoid, to the spots whence arise these 
pernicious exhalations. This establishment is situated at the east 
end of the town, on the right side of the road from Metz to May- 
ence, at the foot of a mountain, and the entrance of a beautiful 
valley. It consists of two long ranges of stabling, with their 
backs to each other, extended longitudinally from east to west, one 
facing the north and the other the south. At the extremities of 
