The gunner shevving the vvhole practise of artillerie: vvith all the appurtenances therevnto belonging. Together with the making of extra-ordinary artificiall fireworkes, as well for pleasure and triumphes, as for warre and seruice. VVritten by Robert Norton, one of his Maiesties gunners and enginiers.
Norton, Robert, d. 1635., Bry, Theodor de, 1528-1598,
THEOR. 6. A Body rarifying its selfe, the place thereof increaseth as the Body increaseth.
As a Body of Earth that then contained one solide foote in measure bee made water, which adding thereto, one other solid foote, the place also must encrease, from one to two solid feete, or else it hath not the same iust dimensions within, that the body hath without, and so it is not the place of that body of water; so if the place also were greater then the body filled, there must in that place be emptinesse betweene it and the body, which were absurd: therefore the place encreaseth as the Body ratifying doth.
