ABSTRACT
I N our Iaft we endeavoured to expound Euclid's Definition of Proportionals, and defend it with fome preparatory Arguments. But becaufe moft of the Moderns do either greatly oppofe, or quite rejea it (fome indeed as a Propofition fimply falfe, but more as a bad Definition ;) it remains that I clear it from the Accufations they bring againft it.
