698 
ON THE DISEASES OF DOGS. 
in the first place, to expose all the phenomena of this disease when 
considered under its most simple form, and, afterwards, to en- 
deavour to define all the various complications that are found 
united with it. 
At first the animal appears dull and lazy — follows his master 
carelessly — is less obedient — his appetite decreases and becomes 
depraved — he becomes weak — lies on one side — no longer heeds 
what is said to him — the head is heavy, the eyes animated, the muz- 
zle warm, the nasal membrane painful and dry — he coughs at in- 
tervals, and appears as if endeavouring to get something from his 
throat, and clear his nostrils of the matter that hangs about them, 
which he attempts by shaking his head, endeavouring to sneeze or 
snort, and rubbing his nose with his paws — the thirst is insatiable — 
nothing gratifies him more than the sight of water, and the tem- 
perature of his body is often considerably elevated. Among these 
primary symptoms may be reckoned as one of the most common 
a dry, hacking cough, which comes on chiefly when the animal 
goes out into the air. In some cases this cough is never con- 
siderable, but in others it augments until it becomes wearying and 
incessant, producing, by its irritation, suffocation and fruitless efforts 
to vomit. 
After about the seventh or eighth day the second epoch of the 
disease commences. This is first distinguished by an increase of 
cough which becomes thick and frequent, and by still more decided 
flux from the- nose and greater irritation. A quantity of mucus 
flows from the., nostrils, and* often the mouth also, which is at first 
limpid ancUof a greyish wnite, but which daily becomes thicker 
and as^jjpnes a green or yellow cfilour, and sometimes obstructs the 
nostrils to such a degree as to impede respiration. This matter, 
which ^generally destitute of smell, adheres to the orifices of these 
parfs, ai d when it escapes from the eyes, which about this time 
lDecome bleared, it soon glues the lids together. If the chest is 
sounded it clearly echoes ; but through the medium of auscultation 
a mucous rattle may be detected in the trachea and bronchial 
tubes. There is sometimes a slight diarrhoea, which, by its con- 
tinuation, exhausts the patient. During this epoch the animal 
suffers from nausea and sickness, and makes vain efforts to throw 
off the nasal mucus. It becomes weaker and weaker, totters when 
it attempts to move, and has no power in its hinder parts. This 
state sometimes lasts from eight to ten days, and occasionally ex- 
tends to fifteen or more. 
During the third epoch the symptoms are varied according to 
the termination towards which the disease tends. If it does not 
incline favourably, the eyes become glassy, vague, and full of 
tears, and a repugnance towards every kind of food manifests 
