. International record of medicine . eiectro-urethroecope adapted to Klotzf^ i circular screen being placed imniediatelv behind the mirror. to cut off extraneous raysof light. As in the Leiter instru-ment, of which this is real-ly but a modification, the gain of nearly an inch in distance over that used by Desor-meaux. I have subsequently adapted my instrument to this formof tube by placing at the distal end a small, flat foot, at theouter extremity of which is a smooth pin. This pin fitsinto a hole in the tube plate, and, on revolving the instru-ment a quarter of a circle, the foot swings und


. International record of medicine . eiectro-urethroecope adapted to Klotzf^ i circular screen being placed imniediatelv behind the mirror. to cut off extraneous raysof light. As in the Leiter instru-ment, of which this is real-ly but a modification, the gain of nearly an inch in distance over that used by Desor-meaux. I have subsequently adapted my instrument to this formof tube by placing at the distal end a small, flat foot, at theouter extremity of which is a smooth pin. This pin fitsinto a hole in the tube plate, and, on revolving the instru-ment a quarter of a circle, the foot swings under a shoulderriveted to the plate and is securely fastened. This joint isfirm and easy of manipulation, readily allowing the illu-minator to be attached or removed at any time during theexamination.! This instrument, while it viss very light and obviatedmany of the objections to the original, yet was not perfect,the principal fault being that it still permitted the escapeof a large amount of extraneous light, which soon becameannoying to the eye of the operator. The mirror (au inchand a half in diameter) throwing parallel rays, only


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Keywords: ., bookcentury1800, bookdecade1860, booksubjectmedicine, bookyear186