“LXVIII. An admirable and most forcible way to drive up water by fire, not by drawing and sucking it upwards, for that must be, as the philosopher calleth it, _infra spheram activitatis_, which is had at such a distance; but this way hath no bounder, if the vessels be strong enough; for I have taken a piece of a whole cannon, whereof the end was burst, and filled it three quarters full, stopping and screwing up the broken end, as also the touchhole; and making a constant fire under it, within twenty-fours it burst, and made a great crack. So that having found a way to make my vessels, so that they are strengthened by the force within them, the one to fill after the other, have seen the water run like a constant fountain stream forty feet high; one vessel of water, rarefied by fire, driveth up forty of cold water; and a man that tends the work is but to turn two cocks, that one vessel of water being consumed, another begins to force and refill with cold water, and so successively, the fire being tended and kept constant, which the selfsame person may likewise abundantly perform in the interim between the necessity of turning the said cocks. “C. Upon so potent a help as these two last-mentioned inventions, a waterwork is, by many years’ experience and labour, so advantageously by me contrived, that a child’s force bringeth up, an hundred feet high, an incredible quantity of water, even two feet diameter. And I may boldly call it the most stupendous work in the whole world! Not only, with little charge, to drain all sorts of mines, and furnish cities with water, though never so high seated, as well to keep them sweet, running through several streets, and so performing the work of scavengers, as well as furnishing the inhabitants with sufficient water for their private occasions; but likewise supplying the rivers with sufficient to maintain and make navigable from town to town, and for the bettering of lands all the way it runs; with many more advantageous and yet greater effects of profit, admiration, and consequence. So that, deservedly, I deem this invention to crown my labours, to reward my expenses, and make my thoughts acquiesce in the way of farther inventions. This making up the whole century, and preventing any farther trouble to the reader for the present, meaning to leave to posterity a book, wherein, under each of these heads, the means to put in execution and visible trial all and every of these inventions, with the shape and form of all things belonging to them, shall be printed by brass plates.” And he devoutly concludes:--“_In bonum publicum, et ad majorem_ DEI _gloriam_.”