mixtures that compose them.

I shall possibly be wonderd at, that being able to accomplish all by this
single method, I have not in the interim recours to it, when all other ways
prove unserviceable; But after all, tho this method be perhaps more
ingenuous and of a more profound speculation, it is not however the most
naturall and compendious, be it never so refind'd or accomodate to my
designe, and I hardly understand the reason why any man should affect a
crooked and uncouth road to active at his purpose when the streight lyes
before him.

_The second part of the desine._

Comparison alone is not (in the opinion of some) sufficient to accomplish
the present intention, however accurate it be; if it want the supports of
_reason_, it may rationally be suspected for being more airy then solid,
and without injustice the same character may be given to some of those
unusuall Chances that sometimes produce the most surprizing effects.
Besides altho the vivacity and force of imagination be easily admitted into
the relations of the Languages, and leaves there forcible impressions, yet
it neither warrants certitude, nor dislodgeth confusion; 'tis reason alone
that establisheth the mind in its cognizances, and credits all its
conceptions with order, tis that alone which perfects the combination of
all their relations and agreements according to the naturall connexion
which they have with the same principles on which they depend in Common.

That which seems to be of greatest moment is that the principles be
plausible and rationall and such as man may lay a stress on without
suspicion or fear, and this is that which in a singular manner the
principles of this Art challenge to themselves, being in my opinion