to Them ^ he cannot make fuch ufe of it in Difcourfe as o- 
thersmay^ And though it may be thought polEbk^that he 
may, in time^ difcern, by the motion of the Lips, vifibleto 
the Eye, what is faid to him s ( of which I am loth to deli- 
ver a pofitive judgment, fince much may be faid con jeftu- 
rally both ways ^ ) yet this cannot be expefted, till at leaft 
he be fo perfeftly Mafter of the Language, as that, by a few 
Letters known, he may be able to Supply the reft of the 
Word 5 and by a few Words, the reft of the Sentence , or 
at leaft the lenfe of it, by a probable conjefture, ( as when 
we Decipher Letters Mzritten in Cipher :) For, that the Eye 
can adually difcern all the varieties of Motion in the Or- 
gans of Speech, and fee what Sounds are made by thofe Mo- 
tions, (of which many are Inward, and are notexpofcd to 
the Eye at all,) is not Imaginable. 
But as to the other Branch of our Defign , concerning 
the Underftanding of a Language : I (ee no reaibn at all to 
doubtjbut that he may attain This,as perfeftly as thofe that 
Hear 5 and that^allowing the like Time and Exercile, as to 
other men is requifite to attain the Perfection of a Lan- 
guage, and the Elegarxe of it, he may tlnderftand as well, 
and Write as Good Language as other men 3 and (abating 
onejy what doth direftly depend upon Sound , as Tones, 
Cadencies, and fuch Pundilio^s,) no whit inferiour to what 
he might Attain to, if he had his Hearing as others have* 
And what I fpeakof him in particular, I mean as well of 
any other Ingenious perfon in his Condition^whoJ believe, 
might be taught to ufe their Book and Pen as well as o- 
thers, if a right Courfe were taken to that purpofe. 
To tell you next. What Courfe I have hitherto ufed to- 
wards this Defign, it will not be fo neceflary. For fhould* I 
defcend to Particulars, it would be too Tedious ^efpecially 
fince they are to be ufed very differently, and varied as the 
prejfent Cafe and Circumftances do require. And, as to the 
General way, it is fufficiently Intimated already* 
As to that of Speech 5 I muft firft, by the moft fignifi- 
cant fignslcan, make him tounderftand , in whatPofture 
and Motion I would have him apply his Tongue, Lips, and 
other 
