Modern binocular operating microscopes are wonderful things and I am deeply in love with the one I use, just as any good craftsman is with his tools. It cost over one hundred thousand pounds and although it weighs a quarter of a ton it is perfectly counter-balanced. Once in place, it leans over the patient’s head like an inquisitive, thoughtful crane. The binocular head, through which I look down into the patient’s brain, floats as light as a feather on its counter-balanced arm in front of me, and the merest flick of my finger on the controls will move it. Not only does it magnify, but it
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