Automatic Spring Retractor for Mastoid Operations.

Abstract

228 milk yielded by the Jersey breed of cows. Our analysis gave the following results: fat, 10'00 per cent. ; sugar, 4'67 per cent. ; casein, 3' 96 per cent. ; and mineral matter, 0' 69 per cent. This composition is equal to the maximum quality ever obtained. It is stated that the cows producing this milk have passed the tuberculin test. TOILET SOAPS.(PRICE'S PATENT CANDLE COMPANY, LIMITED, BELMONT WORKS, BATTERSEA, LONDON, S.W.)We have examined three specimens of soap called respectively Oatmeal, Parma Violets, and Cold Cream soap, which, we understand, are supplied exclusively through pharmaceutical chemists. In all some 25 varieties of these soaps are made.They bear evidence of being prepared from materials of high quality which, moreover, are well balanced. They are therefore harmless to sensitive skins and free from irritating substances. New Inventions. AUTOMATIC SPRING RETRACTOR FOR MASTOIDOPERATIONS.THE instrument here illustrated has proved of much value in mastoid operations. As will be seen, it is an automatic spring retractor consisting of two arms of well-tempered steel to one of which is fitted a retractor in shape somewhat like an'aural speculum cut in half, the outer side being grooved horizontally to prevent slipping. This blade fits into the meatus and pushes the pinna forwards out of the way of the operator. The other arm of the spring terminates in a plate slightly convex on its external aspect and having teeth set on at right angles to the plate. This pushes back the opposite side of the wound. The retractor is made in two sizes with varying strength in the spring for operations on children and adults. This retractor is self-retaining and will be found a great convenience by those who object to having the assistant's hands in the neighbourhood of the wound. Messrs. Mayer and Meltzer of Great Portland-street, London, W have constructed t,ha inct,rnmani-, fnr ma