What hath been hitherto said may enough suffice to observant Readers, inasmuch as the Fundamentals of the whole Artifice, are therein contained; but least the curious should complain, that I have only made their Mouth water, I shall ingeniously discover to them what in four Years time, wherein I have endeavoured to instruct some Deaf Persons, I have observed what is worthy, and most necessary to be known.

Now what I have effected by this my Method, especially to the Daughter of Mr. Kolard, a Merchant of Harlem, I can appeal to a great part of Holland, and universally almost to the whole City of Harlem, and to innumerable other Witnesses, of all Ranks and Conditions.

The first thing which I require in the Person I am to teach, is, that he be of a docible Wit, and not too young of age; than that the Organs of Speech be rightly constituted in him; for stupid Persons are capable of no Teaching, whose Age is yet too tender; nor do they mind enough, nor know how Teaching will be for their Use and Benefit; but those whose Organs of Speech are altogether unfit, they may learn indeed to understand others when they speak, and discover their own Mind by Writing; but they will never learn to speak.

Having therefore a fit subject, my first Care is to make him to sound forth a Voice, without which, almost all labour is lost, but that one point, whereby Deaf Persons do discern a Voice from a Mute Breath, is a great Mystery of Art; and if I may have leave to say so, it is the Hearing of Deaf Persons, or at least equivolent thereunto, viz. that trembling Motion and Titillation, which they perceive in their own Throat, whilst they of their own accord do give forth a Voice; that therefore the Deaf may know, that I open my Mouth to emitt a Voice; not simply to yawn, or to draw forth a Mute Breath, I put their Hand to my Throat that they may be made sensible of that tremulous Motion, when I utter my Voice; then I put the same Hand of theirs to their own Throat, and command them to imitate me; nor am I discouraged, if at the beginning their Voice is harsh and difficult; for in time it becomes more and more polite.

If I gain their Voice, which for the most part I do at the first time, I soon learn them to pronounce Vowels, viz. I bid them so to moderate the opening of their Mouth, whilst they do form a Voice in their Throat, as I have said above, concerning the Formation of the Vowels; but that they may do that the more easily, I hold a Looking-Glass to them, because they cannot from Sight alone imitate those diverse Motions of the Jaws, of the Tongue, and of the Lips, unless they had oftentimes tried it before a Looking-Glass.  Thence I learned, that that common belief, (that so soon as Hearing is restored to Deaf Persons, they