DISEASES OP THE SDBOTJTIS 303 



is common. In the pregnant mare and cow, stasis edema of 

 tte udder, Mndlegs and along the belly is often observed. 



What are the symptoms of stasis edem,a f 



In non-pigmented skins, a soft to doughy swelling, which 

 may or may not pit on pressure, of bluish color, painless, and 

 cool, characterizes this variety of edema. 



How do you treat edema ? 



The treatment of inflammatory edema is an antiphlogistic 

 one, therefore hydropathic means, antisepsis, and incisions to 

 rid the tissues of septic material are necessary. 



The treatment of stasis edema depends, necessarily, on 

 the cause of this condition; externally, hand rubbing, bandag- 

 ing, slight vesication, scarifications ; internally, tonics, 

 diuretics, purgatives, etc., are indicated. 



Emphysema. 



What is subcutaneous emphysema ? 



An accumulation of air in the meshes of the subcutaneous 

 tissue. 

 How does subcutaneous emphysema arise ? 



1. By traumatism. 3. By septic processes. 

 Explain traumatic emphysema. 



Air may enter through any cutaneous wound and infil- 

 trate the subcutaneous tissue ; wounds about the neck, elbow 

 and thorax especially predispose to emphysema, as the move- 

 ments of these parts produce a sucking and pumping action— 

 that is, the air is, so to speak, sucked through the skin wound 

 into the subcutaneous tissues,, and from here it is pumped up 

 further into the tissue by the compressing action of the cuta- 

 neous cover. But air may also be forced into the subcutane- 



