ANALYSIS of continental JOURNALS. 
199 
parasitical contagion ? I have alluded to one of these in my 
preceding studies : this is the youth of the contaminated 
subject; but the new facts that I now publish prove that 
there are also others which are perfectly unknown, and which 
should be discovered. On this side, again, there is a fine 
field opened to the investigations of science. 
I have now arrived at the termination of the task which I 
proposed to myself, and must stop. But I cannot lay down 
my pen without expressing to M. Rollet all the gratitude I 
feel tow r ards him for the extreme kindness with w 7 hich he 
willingly examined the patients I took the liberty of sending 
to him, and for the interesting note on this subject which he 
sent me, and which I think it my duty to reproduce here. 
V .—Note from Dr. Rollet. 
“ My dear Colleague, —You have kindly submitted for 
my inspection three patients affected with cutaneous erup¬ 
tions of a doubtful nature, and have asked me for my 
opinion. 
“The first patient, M. Maherault, had on the inside of the 
left thigh an erythemato-vesicular round patch, about the 
size of a franc; tw : o similar patches existed in front of the 
chest, one above, the other below the right breast. There 
was another, a little smaller, on the mastoid region, near the 
left ear. These patches w T ere simply erythematous in the 
centre, where there were some thin crusts and epithelial 
scales in process of desquamation; around their circumference, 
how’ever, they were vesiculous. One of the vesicles was yet 
intact, but the others were broken and emptied of their 
contents, though perfectly recognisable ; all formed a raised 
border around the eruption, and some of the smallest w ere 
the size of a millet seed. 
“The second patient, M. Guizol, had an eruptive patch 
similar to the preceding, though larger, and situated on the 
anterior part of the right arm. 
“ The third, M. Bourotte, also had a patch of Herpes drcht- 
natus the size of a franc on the anterior part of his right 
arm. 
“ In these three patients the eruption occupied parts of the 
skin provided with hairs, some of which, however, had only 
the characters of slight down. I thought it necessary to 
discover, either in the crusts or the epidermic scales of the 
eruption, or in the hairs implanted in the diseased parts, if 
the affection w'as a simple one, or if it w r as parasitical. 
