It was that night when, first of all, the notion of intense activity going on below the placid house-fronts of the Terrace occurred to me. None looked more quiet than this, and yet there was seething here a volcanic activity and intensity of living, both in the man who sat cross-legged on the floor and behind that voice just audible through the partition wall. But I thought of that no more, for Horton began speaking of the brain-gramophone again.... Were it possible to trace those infinitesimal dots and pockmarks in the brain by some needle exquisitely fine, it might follow that by the aid of some such contrivance as translated the pockmarks on a gramophone record into sound, some audible rendering of speech might be recovered from the brain of a dead man. It was necessary, so he pointed out to me, that this strange gramophone record should be new; it must be that of one lately dead, for corruption and decay would soon obliterate these infinitesimal markings. He was not of opinion that unspoken thought could be thus recovered: the utmost he hoped for from his pioneering work was to be able to recapture actual speech, especially when such speech had habitually dwelt on one subject, and thus had worn a rut on that part of the brain known as the speech-centre. “Let me get, for instance,” he said, “the brain of a railway porter, newly dead, who has been accustomed for years to call out the name of a station, and I do not despair of hearing his voice through my gramophone trumpet. Or again, given that Mrs. Gabriel, in all her interminable conversations with herself, talks about one subject, I might, in similar circumstances, recapture what she had been constantly saying. Of course my instrument must be of a power and delicacy still unknown, one of which the needle can trace the minutest irregularities of surface, and of which the trumpet must be of immense magnifying power, able to translate the smallest whisper into a shout. But just as a microscope will show you the details of an object invisible to the eye, so there are instruments which act in the same way on sound. Here, for instance, is one of remarkable magnifying power. Try it if you like.” He took me over to a table on which was standing an electric battery connected with a round steel globe, out of the side of which sprang a gramophone trumpet of curious construction. He adjusted the battery, and directed me to click my fingers quite gently opposite an aperture in the globe, and the noise, ordinarily scarcely audible, resounded through the room like a thunderclap. “Something of that sort might permit us to hear the record on a brain,” he said. * * * * *