246 TRANSLATIONS PROM CONTINENTAL JOURNALS. 
and suppuration. A simple puncture of the globe of the eye 
seems, therefore, more rationally indicated here, and it should 
be made in the cornea with a straight cataract-needle of tole¬ 
rable size. This method, which was first introduced by War- 
drop, where recourse was had to the puncture of the sclerotica, 
made with the lanceolar knife or with the paracentesis knife, 
in the direction of and parallel with the rectus muscle, as I 
have proposed, and which has been done by myself. ( Vide 
c Iconographie/ pp. 358, 649, 898, and Clinique Eurojoeenne, 
1859, Nos. 1 and 2.) Whichever of these methods is made 
choice of, both appear to me to be free from danger and 
quite as effective as iridiotomy, but experience alone will 
decide. 
7th. Finally, to show more forcibly the nature of the ana¬ 
tomical alterations, principally to those who have not had the 
opportunity of making pathological researches, I have headed 
the account with a description of a healthy eye dissected for 
the purpose, placing it at the commencement of my researches 
in order to serve as a point of comparison. This dissection 
terminates at the lens, on account of a curious fact which will 
be often alluded to in the course of these observations, and 
which I had proposed further to investigate had not my studies 
on this subject been interrupted. The anterior crystalloid 
in the horse has two leaves or layers, the exterior thinner, 
hyaline, and as if serous; but probably the epithelium, 
which is thicker in the horse, can be easily separated entire, 
whether in the healthy eye or in the one which has suffered 
from ophthalmia. This layer does not become thickened 
or opaque by the phlegmasia, which seems to have no 
effect on it. The posterior layer, which is thicker, becomes 
notably opaque and thickened after an attack of ophthalmia. 
I recommend to those who feel an interest in normal and 
pathological anatomy to pay particular attention to the second, 
fourth, sixth, and eighth observations, where this anatomical 
peculiarity is provisionally designated as the anterior ( cristal- 
hide double ), and to try to demonstrate it by repeated dissec¬ 
tions of both healthy and diseased horses' eyes, and more par¬ 
ticularly by employing the microscope. Perhaps it is not 
that of a hyaline membrane covering the anterior surface of 
the anterior crystalloid. I have not had time to search in 
works on comparative anatomy respecting it. 
1 st Ohs-—Dissection of the healthy eye. 
The choroid is intimately attached to the sclerotica, princi¬ 
pally in the posterior hemisphere of the globe of the eye. 
The tissue of the choroid has a certain density and retinence. 
Its posterior surface is downy, and it is difficult to separate 
