PRINCIPLES OF VETERINARY SURGERY 319 



contain an amber-colored liquid of oily appearance which 

 presents the characteristics of synovia, but which does not, 

 like it, coagulate in the air, but concretes slig-htly. It has 

 been found that in man this liquid would produce an oil 

 stain on paper, and that it contains margarin. In the course 

 of time and after the first evacuation it becomes turbid, 

 owing, probably, to the fat it contains. These accidents, 

 which are very uncommon, do not exhibit any grave fea- 

 tures. They usually disappear after appropriate treatment. 

 TREATMENT.— Contusions in the first degree,— ecchy- 

 mosis, — constitutes an insignificant lesion in the domestic 

 animals, and is only treated in subjects kept as luxuries. Re- 

 solvents, camphorated alcohol and Goulard's extract are the 

 preparations to recommend in these cases. When the pain 

 is acute, preparations of cocaine are specially indicated, and 

 in the dog prolonged baths at a high temperature (40 C.) 

 (112 Fahr.) afford immediate relief. 



The sanguineous tumor yields to compression, which has- 

 tens absorption by spreading out the mass. Friction, mas- 

 sage and the application of an elastic band bring effectual 

 results. 



When the inner face of the sanguineous sac is organized, 

 tapping, combined with aspiration and breaking down of the 

 coagulum is advised. The tapping may be profitably fol- 

 lowed by the injection of an antiseptic liquid, carbolic solu- 

 tion, creosol, tincture of iodine or sulphate of copper. When 

 the walls are indurated excision or enucleation may become 

 necessary, in which event the sanguineous tumor is disposed 

 of in the same manner as a solid tumor. 



Serous effusions do not always promptly disappear after 

 tapping with the trocar combined with energetic compres- 

 sion; in nearly every case the sac will refill. In that event 

 the operation is repeated and followed by injections of iodine, 

 the concentration of which is gradually increased. Gradii- 



