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Author: Leybourn, William, 1626-1700?
Title: The art of numbring by speaking-rods, vulgarly termed Nepeirs bones by which the most difficult parts of arithmetick, as multiplication, division, and extracting of roots both square and cube, are performed with incredible celerity and exactness (without any charge to the memory) by addition and subtraction only / published by W.L.
Publication Info: Ann Arbor, Michigan: University of Michigan, Digital Library Production Service
2012 November (TCP phase 2)
Availability:

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Print source: The art of numbring by speaking-rods, vulgarly termed Nepeirs bones by which the most difficult parts of arithmetick, as multiplication, division, and extracting of roots both square and cube, are performed with incredible celerity and exactness (without any charge to the memory) by addition and subtraction only / published by W.L.
Leybourn, William, 1626-1700?

London: Printed for G. Sawbridge and are to be sold at his house ..., 1667.
Alternate titles: Art of numbring by speaking-rods, vulgarly called Nepeirs bones
Notes:
Attributed to William Leybourn. Cf. BM.
An enlarged edition was published in 1721 under title: The description and use of ... Gunter's quadrant ... to which is added the use of Nepiar's bones.
Folded table inserted.
Reproduction of original in British Library.
Subject terms:
Quadrant.
Sundials -- Early works to 1800.
Mathematical instruments.
URL: http://name.umdl.umich.edu/A48329.0001.001

Contents
title page
THE ARGƲMENT TO THE READER.
Place this Figure at the begining of the Book
text
CHAP. I. Concerning the Fabrick and Inscription Of these RODS.
I. Of the Fabrick of these Rods according to the Inventors De∣scription of them.
CHAP. II. How these Rods are to be Num∣bred.
CHAP. III. A Description of these Rods ac∣cording to their best and la∣test Contrivance.
Concerning a Case for these Rods.
Of a Board with a Frame, upon which to lay your Rods, when any Operation is to be wrought by them, known by the name of a TABULAT.
CHAP. IV. To what Use these Rods general∣ly serve.
CHAP. V. How to apply or lay down any Numbers by the Rods.
PROP. I. Any Number being given, how to Tabulate or lay down the same by the Rods.
PROP. II. How these Rods will appear when Tabulated, and being Tabulated, how to read the Multiplication of that Number so Tabulated, by any of the Nine Digits.
Note,
Example.
An Admonition concerning Ad∣dition and Substraction.
CHAP. VI. Multiplication by the Rods.
THE RULE:
Another Form of MULTIPLICATION.
CHAP. VII. DIVISION By the Rods.
THE RULE
CHAP. VIII. Concerning the Rule of Three OR Golden Rule, Both Direct and Reverse, or Reciprocal.
CHAP. IX. Of the Extraction of ROOTS.
Of the Fabrick of the Rods for Ex∣tracting of Roots.
Concerning the Extracting of the Square-Root.
Caution.
Another Example added for Practice.
CHAP. X. Concerning the Extraction of the Cube Root.
GENERAL RULE.
1. CAUTION.
II. CAUTION.
EXAMPLE Of the Cubick Extraction.