50 
ANALYSIS OF CONTINENTAL JOURNALS. 
have cited, in support of this assertion, an experiment made 
by Dr. Tripier, of this town, and also two observations, which, 
unfortunately, were not complete. Now, however, I am in a 
measure able to give an undeniable proof of this transmission, 
which is much more easy and frequent, perhaps, than is 
generally believed. This is the fact: 
During the whole time that the above-mentioned experiment 
was going on I each day observed and touched , without much 
precaution, my diseased puppies, pleased as I was to note and 
to follow the progress of the disease I had given them, but 
never thinking there was any danger to myself as a conse¬ 
quence of these repeated examinations. On the 4th of January, 
however, I perceived on the dorsal aspect of my left hand, 
in the space comprised between the thumb and index finger, 
a patch about the size of a ten-franc gold piece, on which the 
skin was cracked, and exfoliating in furfuraceous pellicles. I 
thought immediately of the possibility of inoculation from the 
dogs, and as I certainly had no idea of attempting the experi¬ 
ment on myself, I concluded that chance had done so for me, 
and it was necessary now to go on with it. But was it really 
a favus inoculation ? There was as yet nothing to prove it, 
and I concluded to wait. 
On the 6th the patch had extended, and attained the dimen¬ 
sions of a silver franc piece; it was markedly erythematous ; 
the surface of the epidermis was still cracked, and on the 
margin of the patch, where it was falling off in flakes, it had 
a raised border of a silvery tint; the patch itself was regularly 
circumscribed, and was the seat of a very lively pruritis. I 
allowed the disease to follow* its course, only taking the pre¬ 
caution to wear constantly, night and day, a glove on the 
affected hand, to avoid the danger of auto-inoculation in 
some other region, wdiere it w T ould be less easy to w r atch its 
progress. 
On the 14th the patch had notably increased, and was the 
size of a five-franc silver piece; at its centre the epidermis 
w^as yellow, thickened, rough, and cracked; all around the 
borders was a circle of fine vesicles, filled with a limpid serosity, 
and varying in dimensions from a small lentil to that of 
a little pea. In a w 7 ord, thisqiatch offered all the characters of 
a fine specimen of Herpes circinnatus (ringworm). Such, in fact, 
was the diagnosis made at first sight by M. Rollet, to whom 
I showed it on that day, and who w r as desirous of studying it 
with me. 
But after attentively examining the pretended Herpes cir¬ 
cinnatus , w r e were not long in discovering, on a level with some 
hairs , small yellow spots the size of a pin 3 s head , whose centre 
