Know now, that whatever we say out of Envy, our way is none other, and we protest, and will protest, that neither We, nor any of the Antients knew any other way; for it is impossible that our secret can be wrought by any other Prin∣ciples, or any other disposition then this. Our Sophism lies only in the two kinds of Fire in our work: the Internal secret Fire, which is Gods Instrument, hath no qualities perceptible to man, of that Fire we speak often, and seem yet to speak of the External heat; and hence arise among the unwary many Errours. This is our Fire which is graduated, for the External heat, is almost linear all the work, to the white work, it is one with∣out alteration, save that in the seaven first days we keep the heat a little slack for certainty and security sake, which an experienced Philosopher need not do.
But the Internal governing heat is in∣sensibly