10 MR. youatt’s veterinary lectures. 
ference of treatment. Sometimes there is a husky cough, not to 
so great a degree as in distemper, but followed by the same ap¬ 
parent effort to get something from the throat,—the same 
attempt to vomit,—and the ejection of a small quantity of mucus, 
either simply frothy or discoloured with bile. This proceeds from 
obstruction of some of the air passages, and, oftenest, of the supe¬ 
rior ones. An emetic will clear the fauces, and the violent pres¬ 
sure on the thoracic viscera will force out a portion of the spume 
that clogs the bronchial tubes. Cough of this kind, and at¬ 
tended, as is generally the case, by little fever, requires nothing 
more for its cure than the exhibition of a few mild emetics; and 
the emetic for the dog, surest and safest in its operation, con¬ 
sists of equal portions of calomel and emetic tartar, and given in 
doses varying from half a grain to one grain and a half of each. 
The harsh hollow cough is attended by more inflammatory 
action. Emetics are useless here. The depleting system must 
be pursued. This cough, so loud and so harsh, will yield only to 
the lancet and purgatives, assisted by sedative medicines com¬ 
posed of nitre, antimonial powder, and digitalis. An opiate (the 
syrup of white poppies) given at night will often be useful. 
Chronic Cough, 
Cough in all our patients becomes occasionally chronic. This 
is the occasional sequela of simple catarrh, but much oftener of 
an acute disease of some portion of the respiratory apparatus; it 
is especially the consequence of pneumonia and bronchitis. It 
continues weeks, and months, and years, or even during the life 
of the animal; and it is aggravated by every change of weather, 
and exposure to cold. It is sometimes connected with other dis¬ 
eases, as worms, but oftener it is found when the animal is other¬ 
wise in perfect health and full condition, and the breathing un¬ 
disturbed. It is heard when he first begins to stir in the morning, 
when he drinks, or when he is first taken from the stable into the 
cold air. Weeks and months pass, and it does not seem to be 
followed by any bad consequence; but it indicates irritability 
somewhere—a predisposition to take on inflammatory action ;— 
and, if the animal is closely watched, the cough will be evidently 
aggravated, and even serious inflammation of some portion of the 
respiratory tubes will be produced by causes which would not af¬ 
fect another horse. It is often a nuisance to the rider, and it is 
extremely unpleasant in the stable. 
Ti 'eatment .—How shall we get rid of it? Ay, there is the rub. 
It is unaffected by the means which we should adopt in common 
catarrh; it is one of those chronic irritations over which deple¬ 
tion has no power. 
