PERIODIC OPHTHALMIA. 
409 
During the winter we shall continue our experiments in 
that line, using millet which is all headed for one lot, another 
lot partially matured, and a third lot ready for seed. We 
shall also feed seed as a grain feed instead of oats. Another 
line of experiment will be for the purpose of determining 
whether poorly gathered millet produces a more aggravated 
form of the disease than when it is gathered in good condition. 
We have found that millet is a very hard crop to secure in 
excellent condition. It readily moulds if there is much moist¬ 
ure during the process of curing. Should a rain set in at 
that, time, and continue for a day or two, the millet invariably 
moulds to a greater or less extent. In fact it is practically 
impossible to secure it so that the dust does not rise from it 
when it is shaken. 
The chemical analyses were kindly made for me by Prof. 
Ladd and his assistant Mr. Whalen. They were conducted 
with a view of only determining the amount of nitrogen in 
each sample, and the amount of dry matter and ash. 
PERIODIC OPHTHALMIA. 
A NE W METHOD OF TREATING BY SURGICAL INTERFERENCE 
(PARACENTESIS OF THE CORNEA) ILLUSTRATED BY CASES. 
By R. H. Harrison, D.Y.S., Atchison, Kansas. 
A Paper read before the First Veterinary Congress of America (U. S. V. M. A.) 
Every surgeon in the East who has to do with animals 
brought to him for examination for soundness, is often very 
much annoyed, after giving a certificate of soundness, to have 
the animal brought back to him later affected in one or both 
eyes with ophthalmia; also the treatment in these cases is un¬ 
satisfactory, for while the eye can be cleared up and brought 
apparently to a normal condition, the conscientious surgeon 
is obliged to tell the owner that the trouble is likely to recur 
and eventually end in blindness from cataract. 
The treatment recommended in the old, as well as the new 
text-books, has been carefully tried, and such meagre results 
