Nevertheless, the internal structure best display the ravages of specific ophthalmia; it is upon these the terrible scourge exhausts its strength. The eye becomes cloudy; loses its liquid appearance; the black bodies attached to the edges of the pupillary opening either fall or seem about to leave their natural situation. The pupil becomes turbid, then white; the iris grows light in color, and at last remains stationary, having previously been morbidly active. The whiteness of the pupil grows more and more confirmed, and every part grows opaque; by this circumstance, the total cataract, arising from specific ophthalmia, is frequently to be challenged. The lens, moreover, is often driven, by the force of the disease, from its position; it lodges against the inner surface of the globe. Very common is a torn or ragged state of the pupil witnessed, as was stated, during the intensity of the attack, for the iris contracts to exclude the light; remaining thus for any period, it becomes attached to the capsule of the lens; when the disease mitigates, it often rends its own structure by its efforts to expand. Should those efforts prove unavailing, the pupillary opening, as sometimes happens, is lost forever. [Illustration: TERMINATION TO SPECIFIC OPHTHALMIA.] In the previous description of disorder, no mention has been made of the cartilago nictitans, or haw, or third eyelid, as it has been called. This thin body is very active, and resides at the inner corner of the eye; of course, in a disease under which the eye is pained by light, the haw is protruded to the utmost. In ophthalmia, however, it is covered by an inflamed membrane, and though in health its movements are so rapid that it may easily escape notice, yet in this disease it lies before the eye, red and swollen; this substance it was once common for farriers to excise, under a foolish notion of removing the cause of the disorder. The use of the cartilago nictitans in the healthy eye will now be explained. Let the reader inspect any of the illustrations to this article; he will find the outer corner represented as being much higher than the inner corner of the eye, where the active little body resides. Under the upper lid, near to the outer corner, is situated the lachrymal gland, which secretes the water or tears of the eye. Suppose any substance "gets into the eye;" being between two layers of conjunctiva, it creates much anguish, it provokes constant motion of the lid, which in its turn causes the lachrymal gland to pour forth its secretion. Liquid flowing over a smooth globe of course gravitates; the substance "in the eye" is thus partly washed and partly pushed toward the inner corner.