Suddenly, however, the philosopher secluded himself from the vulgar gaze. The public wondered, and then became alarmed. The philosopher had taken to his bed. After some days I was admitted to his presence, and found him greatly enfeebled for want of rest. It was evident there was something that weighed upon his mind. After many ineffectual efforts, many sighs and some blushes, he faltered forth a confession that he feared our theory, (he seemed now, for the first time, kindly solicitous to share the merit of the discovery,) of evaporation being greater at night than in the day-time, was not well founded. An electric shock, shivering the funny-bones of both elbows, could not have startled me more. What did he mean? He continued, that one night whilst engaged upon a new hygrometrical treatise, he had sat up till a very late hour; the door of the room which contained the instrument was open, and the light from his lamp fell directly upon it. Absorbed in profound speculations, his eye occasionally rested upon the little instrument which stood upon a table. There it was -- the pillar of his fame. It seemed to dilate in dimensions until it rivalled the column in the Place Vendome, and on the top of it was a figure, less sturdy than that of Napoleon. Suddenly his vision was broken, and his thoughts were recalled from the future to the present, by seeing a living object move along the table, and quietly approach the foot of his column. Appalled and paralyzed, he sat immovable whilst he beheld an actual mouse, unrestrained by any scientific considerations, place its profane snout in the bowl of the hygrometer, and drink deliberately until its thirst was satisfied. It then retired, and other mice soon came trotting along the table and did the same. Mr. H. is a man of great self-control. He did not tear his remaining locks, or commit any other rash act, but with all the calmness of despair he set fire to the unfinished treatise, and saw it consumed; then he retired to bed, a desolate individual, and rose not again for several days.