180 TRAN.^LATIONS FIIOM CONTINENTAL JOURNALS. 
The whole of tlie medical corps of Toulouse were invited to 
verify and follow the results. Besides the scientific body, 
there were also present MM. Fontan and Izarie; ^1. 
Leblanc, who on the first news of this event made the journey 
to Toulouse on purpose, and who has also verified it; and 
your reporter can also testify to it. But to remove all grouiid 
of doubt, and to reduce critics to silence, M. Cayrel has 
done what we did in 1836; he inoculated with virus pro¬ 
duced by the horse one arm, and with regular vaccine virus 
the other, of the same individual, and he found that the virus 
of the horse produced the best and the largest pustules, but 
they were slower in being evolved than those produced by 
the other. From their aspect it would have been difficult to 
deny the nature of these pustules. Nevertheless, as confir¬ 
mative, other experiments have been made to ascertain it. 
Those who had been inoculated with this virus were vacci¬ 
nated with genuine cow-pox, but without any effect; and we 
might be sure that they would have resisted the smallpox in 
a similar manner had they been exposed to its infection. 
This, gentlemen, is the fact in all its simplicity, but in our 
opinion it is an important fact, and may be summed up in a 
few w^ords. During the prevalence of an epizootic a mare 
falls ill wdth a tumefaction in the back, from w'hich oozes 
some bloody matter; M. Lafosse takes some of this matter 
on the point of a lancet, and successfully inoculates two 
young COW'S, by wffiich pustules are produced similar to and 
having all the appearance of cow^-pox. The matter of these 
pustules is again taken, and by it are produced all the charac¬ 
ters and peculiarities of real vaccination. This being the 
simple fact, w’e may be permitted to make some reflections on 
it, for w^e are not of those wdio think that facts do not admit 
of discussion. On the contraiy, we think that the mind 
ought to judge the facts, or else they become full, of delu¬ 
sions, to wdt, the scandalous variations in therapeutics. 
First, wdiat w'as the nature of this epizootic ? In what did it 
consist? Was it the malady of the horse Avhich Jenner de¬ 
scribes as the origin of the cow-pox? M as it grease? The 
description given by Jenner is really so vague and short, that 
it is difficult to decide; hence the difficulty of the translators 
—the German having translated it manke, the Italian girar- 
donCi and the French first by javart and afterwards by 
eaux aux jamhes (grease), which latter now prevails. Hence 
it is that all those wdio have applied themselves to the verifi¬ 
cation of the conjectures of Jenner have scrupulously taken 
the matter from grease in the horse, and nothing else. This 
has been done by your reporter, assisted by the suggestions 
