406 PRINCIPLES OF VETERINARY SURGERY 



observed a case that followed parturition and Nocard one 

 in a young beagle hound that was fed with raw meat. 

 Frohner insists that there is equal occasion to observe it in 

 the dog, although the clinical symptoms may be wantjng. 

 The symptoms are the same as in the other species. Ac- 

 cording to the observations of Soula the lesions remain 

 localized in the breast and show no tendency to spread. 

 Recovery is rapid. 



PATHOLOGICAL ANATOMY.— (a)— The Horse. 

 The carcass of an animal that has died from malignant 

 oedema emits an odor that is repulsive and fetid. The origi- 

 nal focus of the gangrene is the seat of a very pronounced 

 lesion. The surrounding muscles are reduced to a putrid 

 mass and are macerated into a sanguineous, infected serum. 

 The gas and the liquids separate and infiltrate the sub- 

 cutaneous and intermuscular connective tissues to a consid- 

 erable extent. Analysis of the gas shows it to consist of a 

 mixture of hydrogen, atmospheric air and carburetted hy- 

 drogen. The muscles are discolored, whitish as if cooked, 

 and present numerous ecchymoses of variable dimensions. 

 In a short time even in winter they take on a yellowish- 

 green color that is especially pronounced in the injured 

 muscles. 



In the gangrenous parts the septic vibrion are found in 

 abundance, associated with other micro-organisms, micro- 

 cocci and streptococci that have complicated the primary 

 infection. The systemic lesions are equally well marked. 

 If the carcass is examined immediately after death the 

 specific micro-organism is not found in abundance in the 

 blood, but is found to be multiplied if the autopsy is made 

 some hours after death. The blood is tarry, dark and 

 greasy. If examined microscopically it is found rich in fat, 

 and is seen to contain various mobile bacteria and sometimes 

 micrococci. The endocardium is red, infiltrated and col- 



