BLACK LEG Q41 
bine with them.” Wassermann and Takaki substantiated this 
hypothesis experimentally. These observers injected into experi- 
mentally tetanized animals an emulsion of spinal cord, obtained from 
a freshly killed animal, to test, if possible, whether the nerve cells of 
the dead animal also have this affinity for the tetanus toxin, like the 
nerve cells of the living animal. By this experiment, they have come 
to the conclusion that every part of the nervous system, particularly 
the brain of the examined animals including man, has a definite and 
positive tetanus antitoxic power; and that the injection of normal 
brain substance into experimentally tetanized animals has the power 
to save life. Further work in this direction is necessary to fully 
demonstrate the efficiency of this procedure. 
REFERENCES aN 
1. von Beurine unp Kirasato. Ueber das Zustandekommen der Diptherie- 
ag tay und der Tetanus-Immunitat bei Thieren. Deutsche Med. Wochenschrift, 
r. 1890, S. 1113. 
2. Krrasato. Uber den Tetanusbacillus. Zeit. f. Hygiene, Bd. VII (1889), S. 225. 
8. Krrasato. Experimentelle Untersuchungen tiber das Tetanusgift. Zeit. 
f. Hygiene, Bd. X (1891), S. 267. 
4. McFaruanp. Tetanus and vaccination. The Journal of Medical Research, 
Vol. VII (1902), p. 474. (New series Vol. ID. 
5. Moscucowrrz. Tetanus, astudy of the nature, excitant, lesions, symptoma- 
tology and treatment of the disease, with a critical summary of the results of serum 
therapy. Studies from the Department of Pathology of the College of Physicians and 
Surgeons, Columbia University, Vol. VII (1899-1900). (M. gives pathology and 
antitoxin treatment, summary of cases and full bibliography.) 
6. Nicouater. Beitrage zur Aetiologie des Wundstarrkrampfer. Inaug. Dvss., 
G6ttingen, 1885. 
BLACK LEG 
Synonyms. Black quarter; symptomatic anthrax; emphysema- 
tous anthrax; quarter ill; quarter evil; gangrenous emphysema; 
struck; merylen; charbon symptomatique; Rauschbrand. 
Characterization. Black quarter is an acute infectious disease of 
cattle characterized by the development of an emphysematous swell- 
ing of the subcutaneous tissues and muscles. These lesions are 
usually located upon and ordinarily extend over the greater part of a 
hind quarter or of a shoulder. The disease does not spread from 
animal to animal by simple contact but the infection takes place 
apparently from a common source, the soil. The virus exists in the 
soil in certain localities. 
Symptomatic anthrax is a disease of cattle, sheep and goats, 
although the latter two species are rarely attacked. Swine can be 
