the number of the Elements, Principles, or Materiall Ingredients of Bodies, is an enquiry whose truth is of that Importance, and of that Difficulty, that it may as well deserve, as require, to be searched into by such skilfull Indagators of Nature as your selves. And therefore we sent to invite the bold and acute Leucippus to lend us some light by his Atomical Paradox, upon which we expected such pregnant hints, that ’twas not without a great deal of trouble that we had lately word brought us that he was not to be found; & we had likewise begg’d the Assistance of your presence and thoughts, had not the messenger we employ’d to Leucippus inform’d us, that as he was going, he saw you both pass by towards another part of the Town; And this frustrated expectation of Leucippus his company, who told me but last night that he would be ready to give me a meeting where I pleas’d to day, having very long suspended our conference about the freshly mention’d Subject, it was so newly begun when you came in, that we shall scarce need to repeat any thing to acquaint you With what has pass’d betwixt us before