592 
SUPPOSED DISCOVERY OF VACCINE MATTER. 
Many of the veins were found to be plugged with 
lymph, which was undergoing degeneration, thus affording 
evidence that a diseased state of the vessels had existed for 
some time; indeed, collections of pus were here and there to 
be met with. 
Th e proximate cause of the disease could not be satisfacto¬ 
rily ascertained by the dissection. It is not improbable 
that it depended on the presence of strongyles within the 
mesenteric vessels, as some of those entozoa were present, 
but not in sufficient numbers to lead us to a positive conclu¬ 
sion that they had produced so much mischief as was met 
with. The immediate cause of death was the giving way of 
the walls of one of the haemorrhagic tumours.] 
Facts and Observations. 
THE BEST PREVENTIVE OP HYDROPHOBIA. 
M. Sanson, of the Veterinary School of Alfort, near Paris, 
lately sent a valuable paper to the Academy of Medicine, 
with the above title. The author gives a very striking and 
accurate description of all the symptoms of rabies, especially 
of the initiatory ones (taking advantage of the work of our 
own countryman, Youatt), and concludes by giving it as his 
opinion, that the best preventive of rabies is the exact know¬ 
ledge of the generally little known and insidious phenomena 
which characterise the onset of that terrible affection. 
SUPPOSED DISCOVERY OP THE ORIGIN OP THE VACCINE 
MATTER. 
The French medical papers have, for the last few days, 
been repeating that M. Lafosse, Professor at the Veterinary 
School of Toulouse, has discovered the origin of the vaccine 
matter. The sober truth is, that M. Lafosse has inoculated 
the pus taken from the sores of horses suffering from grease, 
upon a cow two years old, and obtained fine vaccine vesicles, 
three children being subsequently vaccinated successfully 
with the lymph contained in the latter. Now, every one 
knows that Jenner considered the cow-pox as originating 
from the grease. He had inoculated the pus of old greasy 
