40 8 A General Treatise of

From thirty to forty Years, the thousandTrees have that Increase of Growth, thattheir Sum amounts to two hundred and fortythree Pounds fifteen Shillings and four Pence,which is about-four Shillings and ten Pence■per Tree, or near twenty five Pounds per Hun-dred.

The fifty Years Growth of the thousandOaks, following the above-written Direction,comes to four hundred and seventy fix Poundsthree Shillings, which is near forty sevenPounds ten Shillings per Hundred, or aboutnine Shillings and four Pence per Tree.

This Progression is what I suppose is ana-logous to the Method of Growth in an Oak;and from the bell Information I can get, I amapt to think, that the Parallel I have drawnwill very nearly give us their Value at the se-veral Periods of Time, from one to fiftyYears-, I mean as far as it concerns their Pricein Plantations for Timber; for in Nurseries,I am sensible that the Oaks which are therebrought up for Sale, and for transplanting,must bear a much higher Value than I have setthem at, in ten or twelve Years Growth be-cause in liich a Cafe the Land is dear, and theLabour of Workmen very expensive; but Imean only such Oaks as proceed from Acornsin Forests, or other waste Grounds.

As for the Calculation it self, I have notmeddled with the Farthings or Half-pence,because I would avoid those Fractions, whichwould have made the Account tedious in theworking; and besides such Fractions wouldhave render’d the Account obscure to manyof my Readers : But I believe the Method I

have