star, and seeking ambitiously for a north-west passage, instead of circumnavigating all the capes and headlands I had doubled in my outward voyage, I came suddenly upon such knotty problems of alleys, such enigmatical entries, and such sphinx's riddles of streets without thoroughfares, as must, I conceive, baffle the audacity of porters, and confound the intellects of hackney-coachmen. I could almost have believed, at times, that I must be the first discoverer of some of these terræ incognitæ, and doubted, whether they had yet been laid down in the modern charts of London. For all this, however, I paid a heavy price in distant years, when the human face tyrannized over my dreams, and the perplexities of my steps in London came back and haunted my sleep, with the feeling of perplexities moral or intellectual, that brought confusion to the reason, or anguish and remorse to the conscience.
Thus I have shown that opium does not, of necessity, produce inactivity or torpor; but that, on the contrary, it often led me into markets and theatres. Yet, in candour,
