Time, however, while it did not abate my thirst for knowledge, developed my constructive powers. I became a mechanician and an inventor. Perpetual motion was my first hobby. Six times during the course of boyhood did I burst into my mother's presence with the astounding news that I had "discovered it at last!" The mild and trustful being believed me. Six times also was I compelled to acknowledge to her that I had been mistaken, and again she believed me, more thoroughly, perhaps, than at first. No one, I think, can form the least idea of the delight with which I pursued this mechanical will-o'-the-wisp.
Growing older, I took to chemistry, and here my love for research and analysis found ample scope, while the sufferings of my father's household were intensified. I am not naturally cruel—far from it. They little knew how much pain their sufferings caused me; how earnestly I endeavoured to lessen or neutralise the nuisances which the pursuit of science entailed. But I could not consume my own smoke, or prevent explosions, or convert bad and suffocating odours into sweet smells.

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