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In 1942 Arruga published eight articles, which he has collected in a booklet of fifty pages.
The first article deals with some of the surgical instruments which the author has contributed to ophthalmology. The circular saws, first recommended by Gomez Marquez for perforation of the bone in dacryocystorhinostomy, are again advocated by Arruga. The author's forceps for intracapsular cataract extraction have been modified, with incorporation of features which have been found useful in forceps devised previously by other surgeons. With the original Arruga forceps, in grasping the capsule of the lens, one not infrequently picked up the iris at the same time. In the new forceps this possibility of grasping the iris has been eliminated by rounding the part of the jaws of the forceps which come in contact with the posterior surface of the iris. With the original Arruga forceps, when the capsule of the lens was grasped by