196 
ANALYSIS OF CONTINENTAL JOURNALS. 
day sent him with M. Maherault to Dr. Rollet, who, after an 
examination, confirmed my diagnosis, and approved of the 
treatment. 
How did M. Guizol receive the disease? He had never 
been specially employed about the diseased animals; though 
he had certainly seen and touched either the rabbits or the 
experimental dog, like his comrades, but not frequently. I 
did not believe—neither did he—that he got the malady in 
this way. But I have said already that we were infested with 
mice, the majority of which w T ere infected with this disease, 
and that they frequented the students^ rooms. I may add 
that in No. 9 room, inhabited by M. Guizol, several were 
captured; that more particularly on the 17th of July one of 
these mice, very diseased, was found by M. Herbet, room- 
comnanion of M. Guizol, among his clothes and bodv linen 
in his closet; and that it was taken alive (see the paragraph 
relative to Tinea in the mouse). 
I am therefore convinced that it was these diseased mice 
which had deposited, either in the clothes or the bed of this 
student,the germs of the Ac/iorion that vegetated so freelyon his 
arm. However this ma}/ be, the malady also in this instance 
readily yielded to the treatment employed; though it was 
more obstinate than with M. Maherault, and even at first ex¬ 
tended slightly. It finally disappeared, and on the 4th ot 
August there only remained some pimples scattered here and 
there on a surface as large as a five-franc silver piece, and it 
w 7 as impossible to find the slightest trace of the cryptogam. 
As a precautionary measure, however, the liniment w r as ap¬ 
plied for some days after this period. 
3. On July 23rd, 1869, another of our pupils, M. Bourotte, 
a fourth year student, came to me to ask advice regarding a 
herpetic patch he had on the lower aspect of the right arm, 
about a decimetre above the humero-radial articulation. He 
told me he had noticed it for from fifteen to eighteen days, 
and it had commenced by a small red and very pruriginous 
pimple, the size of a lentil, w r hich was succeeded by a little 
red patch that gradually extended and w T ould not heal. 
M. Bourotte would probably not have cared about this hobo, 
if his attention had not been roused by the appearance of a 
disease in his two comrades w’hich attracted a certain amount 
of interest. 
The symptoms noticeable at this moment w 7 ere the follow¬ 
ing :—An erythematous patch about the size of a franc piece, 
exactly circular, slightly raised in relief above the healthy 
parts, of a bright red colour,—especially towards its borders, 
where there can be plainly seen a ring of serous vesicles, some 
