When therefore I taught any Deaf Person to pronounce the Letters hitherto enumerated, and that one by one, I taught him so to utter two or three of the easiest, that there should be interstice between them; as for example, _ab. am. da. fa. ef. &c._ so that they might be accustomed to pronounce the Letters successively; then by degrees I use them to the more difficult Combinations, mutually mixing _Vowels_, _Semi-vowels_ and _Consonants_, and thus with little trouble they learn to read; but if when they have read any thing, I bid them look upon my _Mouth_, and to repeat the same after it hath been pronounced by me; for thus they become by degrees to be accustomed to imitate the humane _Voice_, only by looking on; but I am unwilling to tire them out with this labour, troublesome enough, until they have profited much, because they may be frighted with it. In the mean time we must endeavour diligently; that when one _Consonant_ follows another _Consonant_, as _ps. kt. ks. sch. &c._ or a _Semi-vowel_, as _ls. lk. md. &c._ that they do immediately joyn them in Pronounciation, least some (_i_) or (_e_) be heard between them, which unless it be cautiously avoided, often happens. When they can read, and in a manner understand others when they speak, I treat them like new-born Babes; first, I teach them _Nouns_, which are obvious, as well _Substantives_ as _Adjectives_, so also the most necessary _Verbs_ and _Adverbs_, than _Declinations_ and _Conjugations_; but here that five-fold turning Orb was of most excellent use to me, it being a rich Treasury of the whole _German_ Tongue, which I found in the Mathematical Delights of _Swenter_, I augmented it, and applied it also to the _Dutch_ Idiome; out of it may they quickly, and with pleasure learn all possible _Combinations_ of _Vowels_, _Semi-vowels_, and _Consonants_, also all terminations of _German_ words, and that as well Derivatives as Compounds. The first Orb contains _Prepositions_ and small _Mono-Syllables_, with which _Nouns_ and _Verbs_ are compounded; the second, the _Initial Letters_; the third, _Vowels_ and _Diphthongs_; the fourth, the _Final Letters_; lastly, all the _German Terminations_. But there seems to be a great difficulty, that some Letters, as _e._ and _i. a._ and _u._ are uttered by the same opening of the Mouth, and consequently they must needs be confounded; but in good truth, it's of small moment, because for the most part the difference is not heeded, and the Letters, which according to their nature, are by far, more different, are written almost after the same manner, chiefly when they are pronounced hastily, as _m._ and _n. r._ and _n. a._ and _o. &c._ which yet puts no stop to an exercised _Reader_.