it self in length or breadth, it bends and bows it self several ways; and if we may so say, it in some sort complains of the constraint which it suffers.
So that in general there are two inflexions, or different articulations of the voyce, the one when it's hindered to enlarge it self, and the other when it cannot run in an even thread. The first is, when coming out of the throat, where its principal or∣gan is, it comes to encounter the mouths cavity, which obligeth it to restrain it self, and in some manner to assume the figure it findes in that part; for according as the opening is great or smal, round, square, or otherwise, the voyce conforms it self to all these figures, and takes these different sounds, which are observable in the five Vowels, A, E, I, O, Ʋ. Now we need not doubt but that there is therein a true articulation, since there is a right inflexion, the voyce which seeks to extend it self being in that streight which it is to pass forced to lessen it self. Otherwise we must say that words composed of pure vowels are not articu∣late, because they are not formed by any o∣ther kinde of articulation, but that which we have here observed.
The second is, when the parts of the mouth op∣pose themselves to the voice, and strike on it as they pass, interrupting the equality of its course, and forcing it to turn it self out of its right way: as it happens to waters which run through pebbles and other such like obstacles; and this interruption forms all the consonants; the voyce rendring it self soft or dry, sweet or sharp, clear or obscure,