ANALYSIS OF CONTINENTAL JOURNALS. 
847 
could not succeed ; while all the experiments, eight in 
number, which I made on animals under three months old, 
have yielded, without an exception, a positive result. 
A certain degree of humidity of the surface on which the 
spores are deposited also appears necessary to the germination 
and development of the microphyte. If we are content to 
deposit them on a dry surface with its epidermis intact, we 
generally fail ; but, on the contrary, we always succeed when 
we deposit them on a surface irritated by a blister and moist 
from serosity. 
Perhaps there are other circumstances which favour or 
hinder the germination of the parasite ; but I have not been, 
as yet, able to note their influence. 
Prognosis and treatment . — In animals Tinea is far from pos- 
sessing the same degree of seriousness, the same tenacity, that 
it has in children ; it might even be said that in proportion as it 
is tenacious and difficult to cure in children, so is it benignant 
and easily remedied in animals. All those I have been called 
upon to treat have been somewhat rapidly cured by the most 
simple treatment. I have even seen one of my experimental 
cats, when completely left alone, recover from the disease 
in about three months. The following is the treatment I 
have usually resorted to, and with constant success. 
I commence by removing the crusts, which are more or 
less adherent, by means of a spatula or the blunt extremity 
of curved scissors, taking care not to make the part bleed. 
When the skin has been cleaned in this way as much as pos- 
sible, I every day apply to it a concentrated solution of cor- 
rosive sublimate (sublimate from 1 to 5 grammes, distilled 
water 50 grammes). After the first application the favus 
crusts sometimes have a tendency to be reproduced, and the 
cryptogamic elements to multiply. In such a case it is ne- 
cessary, at the second dressing, to remove the crust as at first. 
Five or six dressings are usually sufficient ; at times, how- 
ever, and especially when the disease is seated at the base of 
the claw, they must be continued for a longer period. As a 
rule, nevertheless, the malady is soon overcome. 
Under the influence of this parasiticide treatment the skin, 
which is depressed, is not long in regaining its vitality and 
its normal thickness. During the first two or three days a 
new crust forms, but this has not the sulphur-yellow colour 
of the primary crust, and if examined with the microscope 
there are no longer to be found traces of the parasite, but 
only numerous epithelial elements. Finally, this crust falls 
off, leaving the skin depilated, but everywhere level, smooth, 
and supple ; in a word, perfectly healthy. Then the hair 
