CORRESPONDENCE. 
713 
acute pharyngitis and laryngitis. The muzzle in some cases 
becomes affected, also the lower lip, but very raiely. 
The disease generally gets worse for about io or 14 days, 
and then gradually improves, providing ulceration is not too 
extensive, or animal too emanciated, when recovery is very 
slow, if at all. I have seen cases in which portions of the 
tongue slough off. But should disease be light, after two 
weeks a gradual improvement takes place, and animal recovers 
in from one to two months. 
Some farmers claim cows that have had the disease never 
give so much milk again, and therefore sell them for beef as 
soon as they are sufficiently recovered. 
In horses the disease is very similar, but attacks the tongue 
first, then the cheeks, is more severe and of shorter duration. 
The disease is by some thought to be caused by some ir¬ 
ritant upon the feed as it grows in pasture, or some weed, but 
I think this can hardly be, as I have seen it in the city affect¬ 
ing horses that receive no feed grown in districts where the 
disease abounds. 
Most cases I have seen have been along rivers or creeks 
leading from or receiving water from slews, and cattle and 
horses feeding in slews are most affected. I am rather in- . 
dined to think it is caused by a germ, and that the germ is in 
the drinking water. 
From the following case I would think it is contagious. 
A gentleman had a horse affected and had to lay it off work 
and get a fresh horse to take its place; one week afterwards 
this horse was also taken with the disease. 
I have also seen cows taken into a barn where infected an¬ 
imals had been, and used same water, that were soon affected. 
I am sorry to say that I did not have any specimens pie- 
pared for the microscope, but should it occur again next 
summer will certainly do so. 
Treatment is very successful. I have always used the fol¬ 
lowing for cows : give ol. lini raw 3ij, repeat every five days ; 
wash out mouth well with warm water containing about 
half dram carbolic acid to 3 pints; then di ess wounds with 
boracic ac. gj, glycerine gviij, use these twice daily. Give 
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