That Useful Knowledge is to be aided
by Instruments. Modern Instances
of such. Of the Telescope, Mi
croscope, and Thermometer.
THus, Sir, I have touched upon some of the Improvements of the ARTS that search into the recesses and intrigues of Nature, with which latter Ages have assisted Philosophical Inquiries. And in these I see I have struck farther than I was aware, into the account of those things also which lead us to the grosser Phænomena; and my Remarques about Geography are all of that nature. However I shall not alter my Method; but after I have discours'd the INSTRUMENTS I mentioned for useful Knowledge, I shall consider somewhat of NATURAL HISTORY, which reports the Appearances, and is fundamentally necessary to all the Designs of Science. As for the INSTRUMENTS then, that are next, before I come to give you