In this paper I shall say a few words about the large number of operative procedures that, apart from trephining, or, preferably, _trepanation_, have been urged in the treatment of the various forms of glaucoma. Their name is legion and among them we find peripheral iridectomy; anterior sclerotomy; irido-sclerotomy; scleriritomy; de Wecker's dialysis of the iris; Hancock's division of the ciliary muscle; the incision of the iridian angle of de Vincentiis; sclero-cyclo-iridic puncture; the Sterns-Semmereole _sclerotomia antero-posterior_; the _transfixio iridis_ of Fuchs; Antonelli's peripheral iritomy; Holth's formation of a cystoid cicatrix; Hern's operation; Terson's sclero-iridectomy; Abadie's ciliarotomy; Ballantyne's incarceration of iris method; Masselon's small equatorial sclerotomy; Simi's equatorial sclerotomy; Galezowski's sclero-choriotomy; excision of the cervical ganglion; removal of the ciliary ganglion; Querenghi's operation of sclero-choriotomy; Bettremieux's simple anterior sclerectomy; Heine's cyclodialysis; Herbert's wedge-isolation operation; Verhoeff's operation with a special sclerotome; Holth's sclerectomy with a punch-forceps; Walker's hyposcleral cyclotomy; posterior sclerotomy; T-shaped sclerotomy; and last but not least the Lagrange form of sclerectomy with its various modifications by Brooksbank James, myself and others. In addition to the foregoing list--which is by no means complete--there are several combinations of operations, as, for example, the Fergus trephining operation, which is really a combination of a sclero-corneal trepanation and a cyclodialysis. So far as it is practicable there is a certain amount of wisdom in comparing the results of an operative procedure with others with which it is brought in competition, and I believe we are even now in a position to form at least some idea of the comparative value of the three methods that comprise the great majority of interventions made use of by ophthalmic surgeons at the present time. I refer to _iridectomy_, the _Lagrange operation_, and the _Elliot operation_. So far as regards the last named procedure, I congratulate this Society that it has had an opportunity of seeing a demonstration and hearing a discussion by the famous ophthalmic surgeon who perfected it. As regards the others let me recommend to you the complete description of them given by Posey in _A System of Ophthalmic Operations_.