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South Phecles. The Poiona

day of mos

1760,
Ecejved of Ongria

the Sum of
Sovonpon 1200 Shile:& fightpenas 72 for 7: 3
One Year's Rent, en kykent. due to the Honourable the

3. 8th
Dean and CHAPTER of Durham, at Perlecool
last, for a Torromont Gone more porno
cat id anton and Coronient of Sora & Shoolo,

Acquitt.
Received by
YO
OU are hereby Required to pay this Rent, due at lipmar

"next, at mnohem headii
for the fields on the

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otherwise the same will be Distrain'd for, without further Notice.

Day of Mary

-

!

THE

THEORY and PRACTICE

OF

GAUGING

Demonstrated in a

SHORT and EASY MET HOD.

CONTAINING, among other PARTICULARS;
The Method of Computing Decimally ; extracting the

SQUARE Root, with the Construction and Use of

the SLIDING-RULE explain’d at large.
The Elementary Properties of the CONIC Sections, and

the Manner of describing them in Plano.
General Principles of MENSURATION, with Theorems

for Measuring all right-lin'd Planes; Parallelopipedons, Prif-
matic Solids, the Conic Sections, Conoids, Spindles, theit

Segments, and Fruftums, &c.
A General Proposition for measuring the Hoofs or Ungula's

of any CONE or PYRAMID, and a new Method for

Measuring by Approximation.
With the APPLICATION of the preceeding Principles to

Practice ; and illustrated throughout by particular Examples.

Published with the particular Approbation of the

Honourable COMMISSIONERS OF Excise.

Design'd for the Use of the Officers of that Revenue.
By ROBERT SHIRTCLIFF E.

LONDON:
Printed by H. Wood Fall, without Temple-Bar, for th:

AUTHOR: And are to be had at his House in Portlanda
Atrest, the Corner of Mortimer-fireet, near Oxford-Market.

M DCC XL

19 Feb. 256HW

CHARLES POLHILL Esq;
John Fowle Efq;
JAMES VERNON Elg;
ROBERT EYRE Esq;
HORATIO TOWNSHEND Esq;
Sir THOMAS ROBINSON Bart.
WILLIAM BURTON Esq;
John ORLEBAR Esq;
COMMISSIONERS

AND
GOVERNOU RS

Of and for the MANAGEMENT and RECEIPT of
His MAJEST Y's Revenues of the

Excise, Malt, &c.
Within that part of Great-Britain callid

ENGL AND;
The following Treatise is, with the greatest Sub-

mission, humbly inscrib'd by

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