in mind the great variability that different patients present in their sensibility to pain, we shall have little difficulty in understanding that couching may sometimes be followed within the first few hours by great suffering attended with vomiting. When we come to discuss the later pain, all difficulty vanishes. The frequency with which iridocyclitis and glaucoma dog the footsteps of couching in India, explains at once the bitter and oft-repeated history of pain coming on within the first two or three days, and lasting for months or even for years. =Some Rare Accidents following Couching.=--In a large series of cases such as we now have under review, it was to be expected that some unusual incidents would be met with. A few of these will be dealt with. _1. The Dislocation of the Lens into the Anterior Chamber._--This accident was known to the early writers. It may occur either at the time of operation or subsequently. In the former case the nucleus alone may be dislocated, or the whole lens may be driven forward in its capsule. It may lie loose and freely movable in the chamber, or may become mechanically impacted there, or, lastly, may be firmly fixed _in situ_ as a result of inflammatory action. In the cases of late dislocation it is usually the nucleus alone that passes forward, the cortex having either become absorbed or the cataract having originally been of the Morgagnian variety. Such are the cases which give rise to the interesting clinical phenomenon of a nucleus which passes backwards and forwards between the two chambers. In some cases alterations in the position of the patient’s head suffice to make the lens travel in one direction or the other. _2. The Dislocation of the Lens between the Ciliary Body and the Sclera_ through the ruptured pectinate ligament occurred in one case. Such an accident must be very rare under any possible conditions of eye injury. J. B. Lawford, in the Reports of the Royal London Ophthalmic Hospital (1886–87, p. 334), recorded a similar happening which followed a blow on the eye by a clasp-knife thrown at a woman. Nettleship (Ophth. Soc. Trans., vol. i.) also published a case in which an opaque lens disappeared into a pouch between the choroid and sclera when the patient lay down, and reappeared in the anterior chamber when he stood up. The condition followed a blow on the eye inflicted some years previously.