(ESTRITS OVIS-STR0NGYLTTS FILARIA. 
347 
many other instances I have been unable to specify the cause. 
Mouldy barns and those upon meadow banks are the ones in 
which the disease is most commonly found. My conviction 
is strong, that by the aid of the microscope the cause could 
be found, and would consist of fungus spores floating in the air 
or adhering to the feed. The fumes of burning sulphur have 
the best preventive, and stimulants the best curative effect. Au¬ 
topsies, with the unaided eye, are unsatisfactory, no sufficient 
cause for death being found. The poisonous cause, be it what it 
will, acts, upon the nerve centres, with depressing, paralyzing 
effect, overcoming and destroying the functions of the bodily 
organs, without making much alterations in their appearance. 
We sometimes observe slight congestion of the oesophagus and 
air passages, and in lingering cases putrescence. 
(ESTRUS OVIS—STRONGYLUS FILARIA. 
By T. T. Winchester, D.V.S. 
— 
v In the winter of 1882, I was called to see a flock of sheep, 
with the following history : 
The owner bought sixty sheep in the fall of 1880, and it was 
soon noticed that there was a discharge from the eyes of a few, 
and they also coughed a little. These symptoms grew gradually 
worse, and in connection with them there was a discharge from 
the nose. A few died that winter- In the spring of 1881, 
some were sold and the rest turned to pasture, some of them 
coughing and running at the nose. Wlien I saw them quite a 
number were discharging a muco-purulent collection from the nose, 
had a hard racking cough, and were very much emaciated, some 
being unable to walk. Before reaching this stage, they lose 
their appetite, become dull, have a slow and weak gait, tossing 
and turning of the head, inclined to butt and push with the head, 
and fits of frenzy, when death generally results. 
Post mortem. The digestive apparatus normal in appearance, 
with very little foecal matter in stomach or intestines. On re_ 
moving and opening the lungs, found in smaller bronchial a large 
number of fine, white, thread-like parasites from 1 to 1J 
