Whatever may have been the length of time taken by De Quincey "in unwinding to its last link the chain which bound" him, it is certain we have no means of knowing it from any thing he has recorded. Be it shorter or longer, his failure to state definitely the entire time employed in his experiment occasioned me much and needless suffering. I thought that if another could descend, without the experience of greater misery than De Quincey records, from one hundred and thirty drops of laudanum, equivalent to about five grains of opium, to nothing, in thirty-four or five days, and in this brief period abandon a habit of more than nine years' growth, a more resolved will might achieve the same result in the same number of days, though the starting-point in respect to aggregate quantity and to length of use was much greater. The object, therefore, to be accomplished in my own case was to part company forever with opium in thirty-five days, cost what suffering it might. On the 26th of November, in a half-desperate, half-despondent temper of mind, I commenced the long-descending _gradus_ which I had rapidly ascended so many years before. During this entire period the quantity consumed had been pretty uniformly eighty grains of best Turkey opium daily. Occasional attempts to diminish the quantity, but of no long continuance, and occasional overindulgence during protracted bad weather, furnished the only exceptions to the general uniformity of the habit. The experiment was commenced by a reduction the first day from eighty grains to sixty, with no very marked change of sensations; the second day the allowance was fifty grains, with an observable tendency toward restlessness, and a general uneasiness; the third day a further reduction of ten grains had diminished the usual allowance by one-half, but with a perceptible increase in the sense of physical discomfort. The mental emotions, however, were entirely jubilant The prevailing feeling was one of hopeful exultation. The necessity for eighty grains daily had been reduced to a necessity for only forty, and, therefore, one-half of the dreaded task seemed accomplished. It was a great triumph, and the remaining forty grains were a mere _bagatelle_, to be disposed of with the same serene self-control that the first had been. A weight of brooding melancholy was lifted from the spirits: the world wore a happier look. The only drawback to this beatific state of mind was a marked indisposition to remain quiet, and a restless aversion to giving attention to the most necessary duties.