166 
M. PASTEUR. 
short tail, at the base of which is the anus; the cyst is filled with 
brown matter like that of the hedgehog. 
I have also studied in a bird (Machetis pugnax, L.,) subcu- 
taneous cysts having also a great analogy with those of trichina, 
but their more than double dimensions, as well as the worms 
they contain, which belong also to the spiroptera or rather Dis- 
pharagii that Dujardin has distinguished from the former, 
and which are very common in the walls of the stomach or free 
in the intestines of birds. These subcutaneous cysts contained 
enrolled larvae in the middle of a brown mass like that of the 
hedgehog or of the frog .—Gazette Medicate. 
UPON THE PRESENCE OF THE VIRUS OF RABIES IN THE CERE¬ 
BRAL SUBSTANCE OF MAD ANIMALS. 
By M. Pasteur. 
. ..... i . * 
Mr. Pasteur has presented recently at the Academy of Medi¬ 
cine of Paris a note upon the presence of the rabid virus in the 
brain snbstance of rabid animals. Since the fact published by 
Meynert, in 1869, that vasculo nervous lesions were found in the 
spinal marrow of two children which had died with hydrophobia, 
similar facts were reported by many pathologists in Germany, 
France and America, which demonstrated the presence of lesions 
of the nervous centres amongst those of rabies. Mr. Pasteur has 
had the idea of hunting the virus in the substance of nervous 
centres in animals which had died of that disease. His experi¬ 
ments, assisted by M. Chamberlain, Roux and Thuilier, were suc¬ 
cessful. The rabid virus exists in the substance of the nervous 
centres with a power of action as great as in the saliva. More 
than that, in inoculating the cerebral substance of an animal dead 
by hydrophobia, in the brain of a trephined dog, Mr. Pasteur has 
succeeded in shortening the duration of the inoculation, which 
thus does not last more than a week. This will facilitate the 
experimental researches upon this disease, which is yet so mys¬ 
terious. 
