SOCIETY MEETINGS. 
135 
batonnets developed with the thermometer at -|- 43° and rendered 
inoffensive by the action of heat at -j- 47°. It is proper to say a 
few words.of this second means, which furnishes also excellent evi¬ 
dence to demonstrate that the effect of heat is graduated as well 
as its duration. In each of three matrasses heated at -j- 47°, dur¬ 
ing one, two and three hours, I take, with a pipette, a certain 
quantity of liquid. Three other matrasses being prepared, I put 
in each one or two drops of the liquid. They are then sowed with 
the threads and baton nets, attenuated by heat. These last mat¬ 
rasses are then put in, the thermometer showing -|- 32° to 35°. 
What will take place in these cultures of second generation ? 
Exactly what will in the primitive one, after the renewal of the 
process of growth. The culture of the second generation de¬ 
velop themselves, in fact, just so much more rapidly as the heat 
in the sowing has been less, and the difference of aspect which 
results from it may continue for several days. All, however, re¬ 
sults in giving spores of handsome appearance, possessing the same 
properties as those of the primitive cultivation, especially that of 
their aptitude of attenuation by heating. 
From the whole of this study it results that the attenuating 
influence produced by heat upon virulent agents is not alone indi¬ 
vidual ; it can also be felt even upon the properties of the new 
agents to which the proliferation of the protoplasm from which it 
is derived gives birth .—Academia Jes Sciences. 
SOCIETY MEETINGS, 
NEW YORK STATE VETERINARY SOCIETY. 
The thirteenth regular meeting of the New York State Vet¬ 
erinary Society was held at the American Veterinary College, on 
Tuesday evening, May S, 18S3,.at eight o’clock, with the Presi¬ 
dent, Dr. Liautard, in the chair. 
The minutes of the last meeting being read and approved, I)r. 
Coates then read the following paper: 
