A geometrical practise, named Pantometria diuided into three bookes, longimetra, planimetra, and stereometria, containing rules manifolde for mensuration of all lines, superficies and solides: with sundry straunge conclusions both by instrument and without, and also by perspectiue glasses, to set forth the true description or exact plat of an whole region: framed by Leonard Digges gentleman, lately finished by Thomas Digges his sonne. Who hathe also thereunto adioyned a mathematicall treatise of the fiue regulare Platonicall bodies, and their Metamorphosis or transformation into fiue other equilater vniforme solides Geometricall, of his owne inuention, hitherto not mentioned of by any geometricians.

Example.

Admit ABCD a Quadrangular peece of ground, which being measured, is founde to containe 50 Acres, and that my desire is to cut of 10 acres from that figure, with a right line passing foor••he from the Angle C, first therefore I mea∣sure the length of the side AB, finding it 200 rodde, 200 therefore I augment by 1600 the number of Perches in 10 acres, there ariseth 320000, whiche diuided by 4000 the number of rodde contained in halfe that figure, your Quotient wil be 80, the number of Perches from A to E, so that

[illustration]

by the Partition CE, ye shall seperate the Triangle ACE containing exactly 10 a∣cres, but if the summe of acres had ben grea∣ter than halfe, ye should haue deducted it from the whole Area, and with the re∣sidue woorke in all respectes as ye haue done with this, the only difference is, that at the ende of your operation, whereas heere the Triangle ACE is the portion seperate, there it shoulde be the residue or Quadrangle ECDB, for that there is no difference in the working, it were superfluous to vse mo Examples.