RESUMED STUDY IN ANTHRAX. 
231 
same or the day following that of the appearance of the disease. 
Such is the most common asDect of anthrax, unaccompanied 
by external localization, amongst equines. 
In some cases the disease advances much more rapidly to its 
termination. The animal exhibiting no appearance of distur¬ 
bance in health, suddenly stops his work ; he shakes his head ; 
presents a frightened appearance; trembles, instinctively spreads 
his legs to avoid falling, then drops down, and, with a few convul¬ 
sive movements, dies. 
In such circumstances, when the disease kills in less than an 
hour, in a few minutes, indeed, the disease is more commonly 
known as the apopletic form of anthrax. 
(b). Anthrax with external manifestations , (Carbuncular An¬ 
thrax).*—The disease presents asymptomatic ensemble very anal¬ 
ogous to that of ordinary anthrax fever, but its evolution, which 
is less rapid, is accompanied with external alterations. Indeed, 
during the course of the disease, ordinarily as early as during the 
febrile period, tumors of various sizes, and generally well defined, 
appear, principally upon the declivous parts, rich in sub-cutaneous 
laminous tissue. These tumors, ordinarily small at first, are at 
the beginning, warm and very painful. They rapidly increase and 
then lose their sensibility, sometimes assuming enormous sizes. 
If incised a flow of black, ichorous, uncoagulable blood takes 
place, mixed with serosity and gelatine-form material. Later, they 
become painless and lose their heat. Some are emphysematous 
and crepitating, but never so at the outset of the disease, as the 
crepitation and the emphysema are but the result of the forma¬ 
tion of gasses in the putrifying sub-cutaneous tissues. When the 
death of the animal is soon to take place one may sometimes ob¬ 
serve that the altered tissues and the skin covering them are 
eliminated by a process of sloughing analagous to that of gan¬ 
grene. One sees also, in numerous cases, that the hairs which 
cover the carbuncular tumors are moistened with a kind of red 
dew from the transudation of the blood, deeply altered, through 
the tegumentary covering. 
* 
Charbon Esseotiel. 
