AS TO SOUNDNESS. IL 
LECTURE II. 
Examination of Eyes (continued)—Tension—Oblique or Focal 
Illumination —Catoptric Test—The Conjunctiva— Cornea — 
Iris—Corpora Nigra— Ruptured Lens Capsule — Mirror of 
Ophthalmoscope of very great use—Horse is now brought out 
of Stable—Shaky Fore Legs—Bent Fore Legs. 
GENTLEMEN,—At our last meeting you will remember 
that we had brought the horse out of his stall, and 
having closed the door of the stable, were examin- 
ing his eyes by the light over the door. I men- 
tioned trying the tension of the two eyes, and shall 
only further observe that so much is tension resorted 
to as a test in the sister profession, that Mr. Bowman, 
of London, the distinguished oculist, indicates nine 
degrees of tension. We ought at least to distinguish 
‘three degrees: 1, normal; 2, increased ; 3, diminished, 
' The anterior half of the eye, when apparently sound, 
or, still more, when evidently affected, claims our 
attention, seeing that the tension test and the relative 
size test have disposed of the posterior half satisfac- 
torily. I mean by the anterior half of the eye, the 
conjunctiva, cornea, iris, and the lens, with its capsule ; 
the aqueous humour seldom suffering, so far as we 
