10 
EDITORIAL. 
of the endothelial capsule, as found in animals dead with rabies, 
removed all possible doubts as to the nature of the disease. Be¬ 
sides them, submeningeal inoculations gave rabies to rabbits. 
Another interesting point to notice is this: The number of 
mad dogs observed in the region did not seem in proportion with 
that of cows and horses affected, and consequently it is probable 
that wild animals may have acted as transmitters of the affection. 
Some people, worthy of belief, have reported to have seen in the 
fields bats flying in full daylight, attacking bovines and biting 
them. These cattle died a few days after. 
It certainly would have proved very important to verify ex¬ 
perimentally, if truly, these bats were rabid, and if they could 
transmit the disease. 
* 
* * 
Adrenaline and Determination of Sexes. —The deter¬ 
mination of the sexual nature in utero of foetal products has 
always been an interesting question, and its importance is very 
great when considered from the point of view of breeding in ani¬ 
mals. Many are the theories advanced explaining it, and many 
suggestions have been made to solve the problem. Lately the 
question has received a new impulse, so to speak, by a communi¬ 
cation which was made at the Academic des Sciences , in Paris, 
by Prof. Leon Labbe. The authority of his name and the im¬ 
portance of the subject have necessarily called the attention of 
interested parties, and as a result I have received from a friend 
from America a letter asking for information as to the applica¬ 
tion and value of the recent discovery. One of his best clients, 
extensive breeder of fine cattle, wanted to know what there was 
in an article which had appeared in a western journal and which 
promised, or at least suggested, the possibility of determining or 
obtaining a special sex at will. Information was asked. It is 
difficult to say for the present what value there is in the conclu¬ 
sion of Professor Labbe’s communication. And to give final in¬ 
formation, I send the following compte rendu extracted from the 
Bulletins de VAcademie des Sciences: 
