646 ON THE SENSE OF TOUCH IN THE HORSE’S FOOT. 
sire to affirm this as the true cause of the phenomena, one fact 
appears certain, which is, that in the fabrication of resinous soaps 
is noticed an elimination of violet odour, whenever, in the sapo- 
nification of resins, there remains behind some of the essential 
ingredients. 
We have no desire to dwell longer on this subject, no more than 
we have on the history of diuretics. Our aim was not to frame a 
complete table of this important branch of medication; we, have 
merely felt desirous of bringing together, without attaching more 
weight to them than they are deserving of, the chemical and phy- 
siological discoveries of late years, which to us have appeared of 
a nature to cast light upon the action of diuretic medicine. The 
resume of the principal indications of these medicines will termi- 
nate the task we have set ourselves. 
Diuretics, considered generally, are indicated in the following 
diseases : — 1st. In fevers, and in most internal phlegmasiee under 
the name of revulsives, diluters, and antiphlogistics. 2dly. In 
dropsies of the large serous cavities and effusions into the cellular 
tissue, as evacuants, and as modificators of nutrition and absorp- 
tion. 3dly. In virulent, putrid and miasmatic diseases, and in 
poisonings, in order to excite the elimination by the kidneys of the 
morbific and toxical matters. 4thly. In cutaneous affections, with 
the double intention of producing a convulsive effect and a deri- 
vative action of the kidneys, in attracting to them an afflux of 
blood, and creating inordinate secretion, which might balance the 
secretions of the skin. 5thly. In the case of mucous flux, or even 
of issues, which we are desirous of diminishing or suppressing, in 
determining in the uropoietic passages a highly active secretion 
which might serve as compensatory flux, &c. 
Journal de Medicine Velerinaire de Lyon . 
On the Sense of Touch in the Horse’s Foot. 
By M. H. Bouley, 
Clinical Professor at the Veterinary School at Alfort. 
[Extracts from a Lecture delivered before the National Academy of Medicine 
on the occasion of its meeting, 14th May, 1850.] 
Beneath the horny covering of the foot is a vascular and 
nervous membrane, a continuation of the true skin of the body, 
which is endowed with an exquisite tactile sensibility which it 
owes to the presence of countless processes issuing like the nap of 
