SURGICAL PATHOLOGY. . 
507 
portion of staphylococcus pyogenes aurens; these last organ¬ 
isms stopped their growth. The blood clot of dog is also an 
improper medium for their development. This fact is notice¬ 
able, viz., that the pus corpuscles of this nature are dead ele¬ 
ments, unable by their special activity to incorporate and de¬ 
stroy the microbes. Grawitz had the same result with pus 
from a psoas abscess, entirely free from germs. 
The histologic examination of the walls of the abscess, 
produced by the spirit of turpentine, showed that the con¬ 
junctive cells were in the form of karyokinesis, and passing 
through the various parts of the process of inflammation. Gra¬ 
witz saw that the cellular products of the conjunctive cells 
in proliferation cooperated with the leucocytes in the forma¬ 
tion of pus. Suppuration is then not produced by micro-or¬ 
ganisms only, neither do leucocytes alone cooperate alone in 
the production of purulent collections.— Rev. des Sc. Med. 
IMMUNITY OF RABBITS AGAINST THE BACILLUS OF ROUGET OF 
SWINE. 
By E. Metscjhinkoff. 
If, in a rabbit inoculated against rouget, a virulent liquid 
is injected in the sub-cutaneous cellular tissue, living bacilli 
are found at the point of injection for a time, of various 
lengths, a proof that these bacilli are not destroyed by a 
chemical substance acting very rapidly as an antiseptic, as 
said by Emmerich, and Mattei; after the injection of 
vaccine made in the anterior chamber of the eye, living bacilli 
are found for a certain time; then the aqueous tumor gives 
no more culture, and before this complete destruction of ba¬ 
cilli, the bacilli of the vaccine are seen mixed up with leuco¬ 
cytes immigrated in the anterior chamber. 
In introducing under the skin of the rabbit plates of glass 
glued together with wax and dipped in a culture of virulent 
bacilli, leucocytes are seen penetrating between the plates, 
and in their interior a more or less considerable number of 
bacilli were detected in now-refractory rabbits. Bacilli en¬ 
veloped by phagocytes remain for a long time entirely nor¬ 
mal and coloring perfectly, while in refractory rabbits these 
