The art of pronuntiation digested into two parts. Vox audienda, & vox videnda. In the first of which are set foorth the elements and seuerall parts of the voice: in the second are described diuers characters, by which euery part of the voice may be aptly known and seuerall distinguished. Very necessary as well thereby to know the naturall structure of the voice, as speedily to learne the exact touch of pronuntiation of any forraine language whatsoeuer. Newly inuented by Robert Robinson Londoner.
Robinson, Robert, Londoner.

Of the number of vowells.

They are in number ten, and are euery one of different quality, both in respect of their different manner of framing, and of their diuers places wherein they are so framed.