1. Inasmuch as all our material is derived from blinded eyes, it is obvious that we are dealing with the coucher’s failures alone, and are excluding his successes. In a very large percentage of the latter the lens is seen, during life, to be floating freely in the vitreous, apparently untrammelled by adhesions. 2. The position in which we find the lens on bisection of the eyeball is not necessarily that into which it was thrust at the time of operation, for the changes which occur in the eye as a result of inflammatory action may profoundly alter the position into which the lens was originally forced by the coucher. Nor must we forget that in those globes, in which the cataract is not tightly tethered by adhesions, gravity plays a part. Having thus cleared the ground, we may start with the statement that, though the lens may be displaced in any direction within the sclero-corneal coat, backward dislocations are by far the most common, whilst forward ones were only found 4 times in the whole series of 54 globes. None the less, each of these latter cases possesses considerable interest. =Forward Dislocations.=--(1) In No. 8[1] the couching instrument passed through the limbus, and the track of the wound can be plainly followed in microscopic sections. The ciliary body was pushed bodily away from the sclera, and the lens nucleus was forcibly thrust into the space formed by this cyclodialysis (Pl. II., Fig. 10); it is to be seen imbedded in a mass of inflammatory exudate, whilst its capsule, with some of the cortex, lies in the normal situation. [1] The whole series of specimens has been presented to the Royal College of Surgeons of England. The present chapter forms a descriptive catalogue of the most instructive of them. The original Madras numbers within the bottles have been retained, and are here quoted for ready reference. (2) In No. 44 the capsule and the nucleus of a Morgagnian cataract are seen floating in the vitreous chamber (Pl. II., Fig. 11). During life the nucleus frequently passed backwards and forwards between the aqueous and vitreous cavities. The same phenomenon, though rare, has been observed in other couched eyes. (3) No. 61 is probably an instance of the same kind of thing having happened at an earlier period (Pl. II., Fig. 12). Now, however, the small dark Morgagnian nucleus is seen fixed in the lower part of the anterior chamber, into which it doubtless gravitated by its own weight, and there set up inflammatory mischief, which led to its adhesion to the surrounding parts, and to its becoming fixed _in situ_ by the formation of organising exudate.