ANTHRAX 95 
which are at first hard, hot and painful. Later they become cold 
and painless, with a tendency to become gangrenous. The edematous 
tissue becomes doughy, cold to the touch and painless. Frequently 
fluctuating swellings of the skin occur. The duration of this form of 
the disease varies from four to fifteen days. Ordinarily it is not so 
fatal as internal anthrax. 
When the infection is on the mucous membrane of the mouth or 
pharynx the animal suffers from fever, dyspnea, difficulty in swallow- 
ing and cyanosis, together with the immediate local effects. Death 
occurs much sooner than when the disease is located in the skin. It 
is stated that dogs and swine suffer from this form more than from 
the acute types. 
In horses, anthrax usually runs an acute or subacute course. The 
first symptom is rise of temperature with a rapid, feeble pulse. There 
may be chills and muscular spasms. The mucosa of the head becomes 
cyanotic and lacrymation is often present. ‘The animal has a dull, 
stupid look, appears to be stunned and walks with a staggering gait. 
In some cases there are symptoms of cerebral congestion,, such as 
restlessness or convulsions. Colic is a very characteristic symptom in 
the horse, otherwise the symptoms are the same as in cattle. Infec- 
tion of the skin usually occurs on the hypogastrium, lower part of the 
breast, inner surface of the fore and hind quarters. Swelling of the 
hind quarters often causes lameness. 
In sheep and goats the disease is usually of the acute or apoplectic 
form. The animals appear as if suddenly stricken with apoplexy. 
If death does not occur within a very short time, symptoms already 
described for this form of the disease may be recognized. Subacute 
-anthrax is said to be very rare in sheep. 
In swine, anthrax is ordinarily characterized by local lesions on the 
mucous membrane of the larynx and pharynx. The animals have a 
rise of temperature and the intermaxillary space is generally swollen. 
The swelling may spread along the trachea, giving rise to difficulty 
in swallowing, hoarseness, cyanosis of the mucosa of the mouth, 
dyspnea and rapid breathing. The animal shows signs of paralysis. 
Death occurs from suffocation. Frequently the tongue becomes the 
seat of the disease. 
In dogs and cats, the disease usually runs a very rapid course. The 
fact that they are usually infected by eating the meat of animals dead 
of anthrax causes them to suffer largely from the intestinal form. It 
