PRINCIPLES OF VETERINARY SURGERY 603 



ter, as Zurn found a micrococcus in the marrow that he 

 considered pathogenic, Leclainche, Tapon and Butel ad- 

 mitted the infectious nature of the disease. Padrone main- 

 tains that the ag-ent is the germ of nitrification. He was 

 able to reproduce the disease by infecting with this micro- 

 organism and claims that he found nitric acid in the urine of 

 animals suffering from osseous cachexia. Tschissowitshe 

 failed to reproduce it and showed that nitric acid is also 

 present in the urine of animals sufifering from other dis- 

 eases. 



"Chemical Theories."— Haller, and after him, Navier 

 admitted the presence of an acid in the blood, and accord- 

 ing to Renard it is phosphoric acid. According to Stansky 

 and Proisseau osseous cachexia is a special osteitis. Ac- 

 cording to Rindfleisch it is a venous sanguineous stasis of 

 the bones, or a superabundance of carbonic acid in the 

 blood and a premature senility of the bones. Ranvier, 

 ^ partially supports this theory and is of the opinion that the 

 formation of carbonic acid dissolves the osseous tissues. 

 Marchand, Schmidt and Weber admit the presence of lactic 

 acid in the bones. According to Volkmann, Ribbet and 

 Lane, it is a demineralization of the bones, an opinidn that 

 Kassowitz rejects. According to Trousseau osseous cach- 

 exia is rachitis of the adult. According to Bouchard it is an 

 acid dyscrasia quite distinct from rachitis, in which there is 

 an accumulation of lactic acid in the osseous tissue, that 

 causes a dissolution of the calcium phosphate. DeCosali 

 and Durhann, assign the cause to defective alimentation and 

 repeated pregnancy. According to Comby it is caused by di- 

 gestive troubles due to dilatation of the stomach, and rever- 

 berating over the osseous system. 



The parasitic theory has been maintained by Zuern who 

 believed he had found the micro-organism in the marrow, 

 but negative bacteriological results are numerous. Arcan- 

 geli found nothing in blood cultures. 



