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Euclid's ELEMENTS

OF

GEOMETRY,

From the Latin

Tranflation of COMMANDINE.

To which is added,

A TREATISE of the Nature and Arithmetick
of LOGARITHMS; Likewise

Another of the ELEMENTS of Plain and
Spherical TRIGONOMETRY; With

A PREFACE, fhewing the Usefulness and Excellency
of this WORK:

By Doctor JOHN KEIL, F. R. S.
and late Profeffor of ASTRONOMY in Oxford.

Now done into ENGLISH.

The Whole revis'd; where deficient, fupplied; where
loft or corrupted, reftor'd. Alfo

Many Faults committed by Dr. Harris, Mr. Cafwel,
Mr. Heynes, and other Trigonometrical Writers, are
fhewn; and in thofe Cafes where They are mistaken,
here are given Solutions Geometrically true.
A more Ample Account of which may be feen in
Mr.Cunn's PREFACE.

By Mr. SAMUEL CUNN.

LONDON:

Printed for THO. WOODWARD at the Half-Mcon, over-
against St. Dunstan's Church in Fleet-Street. MDCCXXIII.

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Professn Louis Kaspinski
5-8-1934
and Ed.

Dr. KEIL's

PREFACE.

A

TOUNG Mathematician may be furprized, to fee the old obfolete Elements of Euclid appear afresh in Print; and that too after fo many new Elements of Geometry, as have been lately publish'd; especially fince those who gave us the Elements of Geometry, in a new Manner, would have us believe they have detected a great many Faults in Euclid. Thefe acute Philofophers, pretend to have difcover'd that Euclid's Definitions are not perfpicuous enough; that his Demonftra. tions are fcarcely evident; that his whole A Elements

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