REVIEW OF BIOLOGY. 
B57 
liver, or a small part of it passed into the peritoneum and 
created a centre of local infection, the cause of death ?— (Soc. 
of Biol.) 
Cysticercus Tenuicollis in the Cardiae Wale of a 
Sheep \^By MM. Railliet and Chr. Morot\. —It is quite com¬ 
mon to find in the thickness of the cardiac muscle of mamma¬ 
lia, cysticerci whose normal habitation is the connective tissue ; 
such are the cysticerais celhiloscs and the cysticercns bovis. The 
cysticercus tennicollis^ which ordinarily develops in serous mem¬ 
branes, may, also, go astray in muscles. But Beemsor is the 
only author who mentions its presence in the heart ; he claims 
to have seen it twice in that organ in cattle. At the inspection 
of a fat and stale ram killed at the slaughter-house of Troyes, a 
cysticercns was obtained from the superficial coat of the ven¬ 
tricular myocardium, which under microscopic examination 
proved to be a cysticercns tenuicollis. As it has already been 
observed for this cysticercus, when located in muscles or in 
parenchymas, the hooks of the parasite were reduced in num¬ 
ber and in size.— {Soc. of Biol. ) 
POLYDACTYEIA IN A HoRSE \^By Mr. Briot\. —A mustang 
from South America presents on both forelegs an internal 
finger, well-developed, smaller than the principal digit, with 
fetlock and hoof not extending to the ground ; the hoof was 
pared off now and then. The principal digit is normal and free 
from any deviations in its axis. The radiographic view of the 
leg shows that the supplementary digit is the second finger ; 
the metacarpal is more developed than in the normal condition ; 
there are two large sesanioids, smaller than those of the princi¬ 
pal digit. Cases of polydactylia are more frequent in America 
than in Europe ; by the absence of deformation of the middle 
finger, they come nearer the ancestral type. Is this fact due to 
the wild life of the horse, or is it that the American horse is of 
indigenous origin and of more recent formation than the Euro¬ 
pean horse, and consequently more subject to atavism ? The 
author puts the question without answering it.— {Soc. of Biol.) 
A Case of Pseudo-Tuberculosis of Feline Origin 
\By Mr. Galavielle'\. —A cat being suspected of rabies, its brain 
was inoculated into a guinea pig and a rabbit. These two 
animals died with pseudo-tuberculosis of the spleen in one and 
of the liver in the other. With the tubercles obtained from 
them, cultures were made of bacilli, isolated or in rods, which 
were inoculated to guinea pigs, rabbit, white rat and a cat. In 
this way, the disease was reproduced under two forms ; one 
