PRINCIPLES OF VETERINARY SURGERY 377 



gelatine, and proved virulent to the rabbit on intraveneous 

 injection. In three horses apparently afflicted with erysipe- 

 las, Malzew also found a streptococcus, which, inoculated 

 into the horse, produced an injurious effect analogous to the 

 original disease. Semmer obtained dififerent results from 

 the preceding writers. The entire three horses that 

 came under his observation rapidly succumbed, and with the 

 serum extracted from the swellings he inocuated a rabbit, 

 a cavy, a cat and two mice, with negative results. On post- 

 mortem he found some staphylococci in the subcutem, and 

 streptococci and bacilli in the effusion of the great cavities. 

 Negative results likewise resulted from the inoculation of a 

 horse with these effusions as well as with cultures of the or- 

 ganisms on agar-agar and gelatine. An erysipelatous swell- 

 ing was, however, produced in a horse by an inoculation of 

 a culture of the staphylococci on potatoes, and a cavy was 

 killed by the same culture. In the cow Lucet found micro- 

 organisms in the serum of an erysipelatous phlegmon, in the 

 form of diplococci and streptococci which took the Gram and 

 Weigert stains. The micro-organism was easily cultivated 

 in broth, on gelose, on gelatine and on potato, but inocula- 

 tion of a rabbit produced no visible effect. Nuvoletti col- 

 lected a bacterium (diplococcus or micrococcus) from the 

 subcutem, from the pus of the abscesses, and from the ex- 

 cretions of affected bovine animals, which was well cul- 

 tivated without losing form, on gelatine or on potato. The 

 germ colored well, like the micro-organism of human ery- 

 sipelas, with all the aniline colors, and it yielded to Gram's 

 method. When inoculated into a rabbit it generated a dis- 

 ease similar to that in the ox from which the cultures were 

 obtained. These bacteriological researches, which are the 

 only ones known to the writer, do not entirely harmonize. 



SYMPTOMS. — In the horse the disease presents 

 the following manifestations ; There are general symptoms 



