The manner of raising, ordering, and improving forrest-trees also, how to plant, make and keep woods, walks, avenues, lawns, hedges, &c. : with several figures proper for avenues and walks to end in, and convenient figures for lawns : also rules by M. Cook.

Example 4.

By this Line and Compasses you may soon find the Decimal Fracti∣on of any summe, the Integer being but given: If it be required to know the Decimal Fraction of 15 s. the Pound or 20 Shillings may be 10000 or 1000 or more; for the larger you make this summe, the better will the Fraction appear. But because great summes cannot be so well wrought on the Line, I will take the Integer or 20 Shillings to be put into 100 parts; and then if you extend your Compasses from 20 to 100, that Extent will reach from 15 to 75, the Decimal of 15.

Thus if you would know the Decimal Fraction of thirteen Shillings, if you keep the Extent of your Compasses fixed, which you took from 20 to 100, that Extent will reach from 13 to 65; So then 65 is

the Decimal of thirteen Shillings. If you would know the Decimal of 5 Shillings, the same Extent will reach from 5 to 25, the Decimal of 5 Shillings. The Decimal of 2 Shillings is 10, the Decimal of one Shilling is 05, that is 5 of 100; for if that Cypner were not prefixed before it, then were it but 5 of 10. Thus by these Rules may you know any other Decimal Fraction.