In these few Pages, I expose to thee openly and ingenuously, by what means I can learn the Deaf, (and because they were born so) the Dumb to speak articulately, and easily to understand others also when they are speaking, so as they may be able both to read, and to understand a Book, or Letter, and to discover their own Minds, either by Speach or Writing.
eighbouring Bodies: This the Physicians Pupils do know; who being about to dissect live Dogs, they cut their Throats, that they may not be troubled with their barking: For Voice differs as much from a Simple Breath, as doth that hoarse Sound, which we excite, by rubbing the tops of our Fingers hard upon some Glass or Table, which is quite differing from that same soft whistling Sound, which is heard when we lightly rub with the Hand the same Glass or Table.
The Voice therefore, as it is the Voice, is generated in the Cartilages of the Wind-pipe, then afterwards is formed into such or such Letters; but that it may become a lovely Voice, it's requisite, that those Cartilages be smooth, and lined with no mucous Matter, else the Voice will become Hoarse, and sometimes be utterly lost, viz. when they have lost their Springy power.
For Pipes; and other Wind-Instruments do most notably e