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Directions concerning the two ensuing Tables.
THE first Table is for any Year except Leap-year. The second Table is for Leap-year only, which happens every fourth year, as namely, Anno 1700, 1704, 1708, &c.
In the first Column of either of these Tables I have put the New Stile (or the Roman Account) of the days in the year, in regard it is ten days before our English Ac∣count; And I have plac'd the English Ac∣count or Old Stile in the second Column, and so again the New Stile in the third Co∣lumn, and our English Stile in the fourth, and so forward, from the left-hand to the right, every odd Column which hath the Month nam'd at the top thereof is the New Stile Account, and every second or even Column, which hath not the month writ at the top is the Old Stile Account: as you may perceive, because the Month begins just ten days after they are begun by the New Account: And in both these Tables I have exactly counted day for day, and set them side by side, upon an equal and streit line from the left hand to the right, from New Stile to Old Stile for every day in the year; Leap-year containing 366 days, and the ordinary year 365 days; each Stile a∣greeing with the other, even to the very same day of the Week.
By these Tables may exactly be known when Bills of Exchange made payable at U∣sance, or Usances, will fall due from New Stile to Old Stile: Thus a Bill dated the first of January 1655, New Stile, payable at double Usance in London; to know when this Bill is due, first I enter the first Table, and find January 1. New Stile to be Decem∣ber 22. Old stile, which is the Date of the Bill, then I go streit along the same line, and in the fourth Column towards my right hand, I find 22 (which is January 22) that is one Usance, and yet along the same line in the sixth Column, I find 19, which is February 19, being the day on which the Bill is due: Again, a Bill dated January 8. 1665. New Stile, payable at double Usance, having found the date in the first Table, I go streit along the same line from January 8. on my left-hand, to the sixth Column towards my right, where I find February 26. Old Stile, on which day the Bill will fall due; in like manner, a Bill dated January 10. New Stile at Usance, will be due Ja∣nuary 31 Old Stile, and payable at double Usance, will be due February 28 Old Stile, if not in Leap-year; but if it be in Leap-year, then I make use of the second Table serving for Leap-year, and I do there find that a Bill dated the first of January at dou∣ble Usance, will be due in London Febru∣ary 20. Old Stile. Again, a Bill dated in Leap-year January 8. New Stile at double Usance, will be due February 27. Old Stile; And a Bill dated January 10. New Stile at double Usance, will be due February 29. Old Stile. And so of any other date of Bill of Exchange payable at any Usances, or Usance, and half, or the like; first find out the date of your Bill in the Tables, and then look streit upon the same line every other Column towards your right-hand, you will find the Usance, or Usances, set down according to the English Account, and for half Usance you must always rec∣kon fifteen days forward; These Tables are so exactly made that they cannot de∣ceive any, but may serve as a competent Judg in resolving many Doubts, Scruples and Questions that may arise between Par∣ty and Party, concerning the precise day on which any Bill of Exchange will fall due as aforesaid; which in regard (as I con∣ceive) it is plainly set down in each Table, therefore I shall forbear any further Expla∣nation thereof.