My reflections were naturally suggested by the singularity of this echo. To hear my own voice speak at a distance would have been formerly regarded as prodigious. To hear too, that voice, not uttered by another, by whom it might easily be mimicked, but by myself! I cannot now recollect the transition which led me to the notion of sounds, similar to these, but produced by other means than reverberation. Could I not so dispose my organs as to make my voice appear at a distance? From speculation I proceeded to experiment. The idea of a distant voice, like my own, was intimately present to my fancy. I exerted myself with a most ardent desire, and with something like a persuasion that I should succeed. I started with surprise, for it seemed as if success had crowned my attempts. I repeated the effort, but failed. A certain position of the organs took place on the first attempt, altogether new, unexampled and as it were, by accident, for I could not attain it on the second experiment. You will not wonder that I exerted myself with indefatigable zeal to regain what had once, though for so short a space, been in my power. Your own ears have witnessed the success of these efforts. By perpetual exertion I gained it a second time, and now was a diligent observer of the circumstances attending it. Gradually I subjected these finer and more subtle motions to the command of my will. What was at first difficult, by exercise and habit, was rendered easy. I learned to accommodate my voice to all the varieties of distance and direction. It cannot be denied that this faculty is wonderful and rare, but when we consider the possible modifications of muscular motion, how few of these are usually exerted, how imperfectly they are subjected to the will, and yet that the will is capable of being rendered unlimited and absolute, will not our wonder cease? We have seen men who could hide their tongues so perfectly that even an Anatomist, after the most accurate inspection that a living subject could admit, has affirmed the organ to be wanting, but this was effected by the exertion of muscles unknown and incredible to the greater part of mankind. The concurrence of teeth, palate and tongue, in the formation of speech should seem to be indispensable, and yet men have spoken distinctly though wanting a tongue, and to whom, therefore, teeth and palate were superfluous. The tribe of motions requisite to this end, are wholly latent and unknown, to those who possess that organ. I mean not to be more explicit. I have no reason to suppose a peculiar conformation or activity in my own organs, or that the power which I possess may not, with suitable directions and by steady efforts, be obtained by others, but I will do nothing to facilitate the acquisition. It is by far, too liable to perversion for a good man to desire to possess it, or to teach it to another.