Blood Diseases. 



179 



in the strict sense ; they do not propagate by inoculation. 

 Thus the poison from the blood of a diseased animal does 

 not produce the same disease, but a blood poisoning of 

 a virulent and rapidly destructive character, and this 

 forms the essential difference between the maladies now 

 under consideration and those to be described in 

 Chapter XVI. 



PURPURA H/EMORRHAGICA. This serious affection is 

 also known as Acute Anasarca, and Sanguineous Dropsy, 

 both of which fail to enlighten the non-professional 



Purpura H-emorrhagica. 



reader. It partakes of none of the essentials of an 

 inflammatory disease. The condition of the blood is 

 such as to favour an infiltration of the fluid portions, 

 being blood-stained, within all sub-cellular spaces, and 

 even into the substance of the skin, internal organs, &c. 

 In fully developed cases it is not uncommon to behold a 

 sufferer standing calm and motionless, while large drops, 

 and even streams, of a bloody fluid from a thousand 

 spots, oozes through the hair, and trickles downward to 

 the ground. Large swellings also appear over and 

 beneath the body and legs, but especially at those parts 



