_Operation._--Evert the lid, incise the conjunctiva freely over the tumour, insert the blunt end of a probe and roughly stir up the contents of the cyst, thus evacuating it. If the tumour is large and of old standing it may be requisite to cut out an elliptical or circular portion of its conjunctival wall. The probe may require to be reapplied once or twice at intervals of two or three days, and in certain rare cases it may be necessary as a last resource freely to cauterise the inside of the cyst with the solid nitrate of silver. In _no_ case is it ever necessary to excise the tumour from the outside of the eyelid; when this has been done in error there frequently remains an awkward and unsightly scar. 2. _Fibrous cysts_, frequently congenital, are met with in one situation, just over the external angular process of the frontal bone. These are larger in size than the preceding, ranging from the size of a barley pickle to that of an almond. Their treatment is excision by a prolonged and careful dissection from the periosteum, to which they almost invariably are adherent. OPERATIONS ON THE LACHRYMAL ORGANS.--In a system of ophthalmic surgery, various operative procedures might be detailed under this head, authorised and sanctioned by old custom. Excision of a diseased lachrymal gland, and removal of stones in the gland or ducts, need no special directions for their performance, and the operation immediately to be described, under the head of Mr. Bowman's operation, is applicable in almost every one of the diseased conditions of the lachrymal canal, sac, and nasal duct, to the exclusion of all the older methods. _Mr. Bowman's Operation._--In cases of obstruction of the punctum, canaliculus, and nasal duct, resulting in watery eye, accumulation of mucus in the canal, and dryness of the nose, great difficulty used to be experienced in the treatment. To pass a probe along the punctum was extremely difficult, in fact, possible only with a very small one, while the common operation of opening the dilated sac, through the skin, and then passing probes through this artificial opening, was found quite useless from the rapid closure of the wound, unless the treatment was followed up by the insertion and retention of a style in the nasal duct. This was painful, unsightly, often unsuccessful; and even in some cases dangerous, from the amount of irritation, suppuration, and even caries of the nasal bones which is set up.