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. 65.
In all enclining or declining planes, as the grade Tropike of greatest ad∣uantage doth vatie; So doth also the proportions of their Ranges, at euery grade of Randon differ, whether they be accounted from the Zenith, or Ho∣rizon Planes, enclining or declining. But yet in such an assured and cer∣taine manner as may be reduced to a Theoricke perfect.
