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A Clacke is a peece of Leather nayled ouer any hole, hauing a peece of lead to make it lie close, so that the ayre or water in any vessell may thereby bee kept from going out.

How to harden Leather, so as the same shall last much longer in succurs of Pumps, then it doth unprepared.

Lay such Leather as is well tanned to soake in water, wherein there hath beene store of iron filings a long time, or else in the water that hath lien a long time under a grindstone, into the which such yron as hath beene from time to time ground away, hath fallen and there setled.

The making of a Pumpe to draw water.

Svppose A B C were a deepe Wel, wherein you would make a Pumpe to draw water to the surface or superficies of the earth. First therefore you must prouide a pipe of Lead, or a peece of timber bored through, so long as will reach unto the bottome of the Well: that par. . . Read More