ON THE DISEASES OF DOGS. 699 
itself more than ever. The urine exhales a foetid odour — a sticky 
frothy matter dribbles from the mouth, and convulsions of the face 
and limbs occur. The animal is now constipated, and now tormented 
with diarrhoea ; its pulse is very irregular, and accelerated in pro- 
portion to the period the disease has lasted. If, however, a favourable 
termination is to be hoped for, the flow of matter from the nostrils 
diminishes and becomes whiter and clearer, the eyes get better, 
the appetite returns, new vigour animates the animal, he becomes 
more attentive to the voice of his master, more obedient, more lively, 
and, ere long, is completely recovered. When the disease has once 
taken a favourable turn, from twenty-five to thirty days may be 
regarded as the average period which the system requires to throw 
it entirely off. If we regard these symptoms, we shall see that 
they all appertain to coryza, and that, at the commencement, the 
disease is actually coryza. 
Complications . — One of the most frequent complications is, 
symptomatic ophthalmia, which manifests itself during the course of 
the second epoch. It occurs in those dogs whose eyes become 
bleared and sore, and the lids glued together by the exuded mat- 
ter. The lids become tumefied — the conjunctiva irritated — the eyes 
red and filled with tears — the cornea obscured — the humours of 
the eyes clouded, and small albuginous patches, and red and white 
spots, are observable on them. Subsequently, little ulcerations 
appear which present small cavities at first scarcely large enough 
to receive the head of a pin, but which extend and penetrate into 
the cornea. The aqueous humour then escapes, and the eye 
becomes atrophied and lost. At other times this ophthalmia is ac- 
companied by a species of amaurosis. 
Another frequent complication is, sympathetic inflammation of 
the bronchial tubes and the lungs, and this presents all the phe- 
nomena of pleuro-pneumonitis. It is then that the dog suffers 
from an incessant and fatiguing cough. It sometimes happens that 
the inflammation extends to the liver, and then the emaciation and 
weakness become more apparent, and increase more rapidly. In 
such cases the interior of the mouth, the white of the eyes, and 
every part where the skin is visible, is tinged with yellow; the 
urine is also of the same hue, and the dog appears to suffer when- 
ever the belly is pressed. 
Another and very important complication, although one of which 
little notice has hitherto been taken, is that of irritation of the mu- 
cous membranes of the respiratory passages, and, frequently of, the 
urinary apparatus. The first of these is generally observed when 
the disease appears primarily in the head or air-passages, or in both 
at once. An obstinate diarrhoea then frequently supervenes, which 
brings on marasmus and ends in death. The complication with 
