Such is this establishment, where the heart is agreeably affected at the admirable spectacle which presents at once every thing that does the most honour to human intelligence, in the efforts which it has been necessary to make in order to overcome the obstacles opposed to its development by the privation of the sense the most useful, and that of the faculty the most essential to the communication of men with one another, and the sight of the physical power employed in seeking, in arts and trades, resources which render men independent. But to what degree are these unfortunates deaf, and why are they dumb? It is well known that they are dumb because they are deaf, and they are more or less deaf, when they are so only by accident, in proportion as the auditory nerve is more or less braced, or more or less relaxed. In various experiments made on sound, some have heard sharp sounds, and not grave ones; others, on the contrary, have heard grave sounds, and not sharp ones. All would learn, were it deemed expedient to teach them, the mechanism of speech. But, besides that the sounds which they would utter, would never be heard by themselves, and they would never be conscious of having uttered them, those, sounds would be to those who might listen to them infinitely disagreeable. Never could they be of use, to them in conversing with us, and they would serve only to counteract their instruction. Woe be to the deaf and dumb whom it should be proposed to instruct by teaching them to speak! How, in fact, can, the development of the understanding be assisted by teaching them a mechanism which has no object or destination, when the thought already formed in the mind, by the help of signs which fix the ideas, restores not the mechanism of speech? Of this the Institutor has been fully sensible, and, although in his public lessons, he explains all the efforts of the vocal instrument or organ of the voice, and proves that he could, as well as any other man, teach the deaf and dumb to make use of it, all his labour is confined to exercising the instrument of thought, persuaded that every thing will be obtained, when the deaf and dumb shall have learned to arrange their ideas, and to think. It is then only that the Institutor gives lessons of analysis. But, how brilliant are they! You think yourself transported into a class of logic. The deaf and dumb man has ceased to be so. A contest begins between him and his master. All the spectators are astonished; every one wishes to retain what is written on both sides. It is a lesson given to all present.