"It was in this very month something over twenty years ago that I, Ludwig Horace Holly, was sitting one night in my rooms at Cambridge, grinding away at some mathematical work, I forget what. I was to go up for my fellowship within a week, and was expected by my tutor and my college generally to distinguish myself. At last, wearied out, I flung my book down, and, going to the mantelpiece, took down a pipe and filled it. There was a candle burning on the mantelpiece, and a long, narrow glass at t ...