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Lately published by the Author.

The ELEMENTS of ALGEBRA. Fourth Edition.

Price 12s. 6d.

The ELEMENTS of PLANE and SPHERICAL

TRIGONOMETRY. Third Edition. Price 7s. 6d.

The PRINCIPLES of the DIFFERENTIAL CAL

CULUS. Second Edition. Price 16s.

A DIGESTED SERIES of EXAMPLES in the DIF

FERENTIAL CALCULUS. Price 8s.

Designed for the use of Students in the University.

Also, in the Press,

An INTRODUCTION to the ELEMENTS of AL

GEBRA, considered in the light of Universal Arithmetic, designed for the use of Junior Students.

TABLES

OF

MONEY, WEIGHTS AND MEASURES,

WITH SOME OBSERVATIONS RESPECTING THEM.

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29

171

I. TABLE OF MONEY OR VALUE.

A Farthing is written or marked 1d. 2 2 Farthings are . 1 Halfpenny

id. 4 Farthings 1 Penny

id. 12 Pence

1 Shilling 20 Shillings ....1 Pound

£1. Money as expressed by means of these denominations is commonly called Sterling money, in order to distinguish it from Stock, &c., which is merely Nominal.

The Standard gold coin of this Kingdom is made of a metal consisting of 22 parts of pure gold, and 2 parts of copper. The Pound sterling is represented by a gold coin called a Sovereign, and from a pound troy of standard gold are coined 46 sovereigns, so that the weight of each is 5dwts. 32grs., or 123.274 grs.; and the Mint price of standard gold is therefore very nearly £3. 175. 101d. per ounce. The Standard silver coin consists of 37 parts

of

pure silver and 3 parts of copper, and a pound troy of this metal furnishes 66 shillings, so that the weight of a shilling is 3dwts. 15 igrs., and the Mint price of standard silver is 5s. 6d. per ounce. The silver coinage is not a legal tender for more than 40s., the gold coinage above mentioned being the only general standard of value.

In the copper coinage, 24 pence are made from an avoirdupois pound of copper, so that a penny should weigh 10 drs. avoirdupois, or 291 {grs. troy: but this is not a legal tender for more than 12d.

A Farthing is the lowest denomination in use, but it is customary to denote farthings by Fractions of a Penny as in the table.

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Though all Commercial Transactions are conducted by means of the Money enumerated in the preceding table, there are other coins or denominations frequently met with, and some of them more particularly in old documents, of which the following are the most important, and their values in current money are here annexed.

£. d. A Groat is

0 04 A Tester.

0 0 6 A Half Crown .

0 fartha

2 6 A Crown .

0 5 0 2= 2

A Seven Shilling Piece 07 0

A Half Sovereign . 0 10 0 4F2=

d
A Half Guinea

0 10 6 48= 24 = 12= A Guinea

1 1 0 hla Noble

0 6 8 960=480=

0 10 0 A Mark

0 13 4 A Carolus

1 3 0 A Jacobus

1 5 0 A Moidore

1 7 0 A Six-and-thirty 1 16 0

2=1

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II. TABLE OF AVOIRDUPOIS WEIGHT.

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A Dram is written 1 dr. 16 Drams are.

1 Ounce

1 oz. 16 Ounces

1 Pound

1 lb. 14 Pounds

1 Stone

1 st. 2 Stone or 28 lbs.

1 Quarter 4 Quarters or 112 lbs. .. 1 Hundredweight . 1 cwt. 20 Hundredweight

1 Ton

1 ton.

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A Firkin of Butter is 4 stone or 56 lbs.; a Fodder of Lead is 19 cwt.: and several sorts of Silk are sometimes weighed by what is called a great pound of 24 ounces.

By means of this table are computed the weights of all substances of a coarse or drossy nature, as Groceries and most of the Necessaries of Life, with all Metals, except Gold and Silver. See Article (210).

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III. TABLE OF TROY WEIGHT.

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A Grain is written 1 gr.

24/
24 Grains are : .. 1 Pennyweight
i

1 dwt.
20 Pennyweights . 1 Ounce

480=29-1 1 oz.

lo 12 Ounces ... 1 Pound

1 lb_576o=240=12-1 This weight is applied to gold, silver, jewels, liquors, &c., and is generally used in Philosophical Experiments. See Article (211).

APOTHECARIES WEIGHT.
20 Grains are 1 Scruple 1 scr. or Ə.
3 Scruples
1 Dram

1 dr. or 3.
8 Drams

1 Ounce 1 oz. or 3. 12 Ounces. 1 Pound. 1 lb. or lb. This weight is employed by Apothecaries in making up Medical Prescriptions in which the latter Symbols are generally used ; and the pound is the same as the imperial pound troy. See Article (211).

IV. TABLE OF LINEAL MEASURE.

An Inch is written 1 in. 12 Inches are :

1 Foot ..

1 ft. 3 Feet

1 Yard.

1 yd.

1 Pole
4 Poles or 22 yds. . 1 Chain

1 ch.
40 Poles or 220 yds. . 1 Furlong . 1 fur.

8 Furlongs or 1760 yds. 1 Mile. 1 mi. By this measure are computed the lineal dimensions of all magnitudes, with the exception mentioned below. See Article (208), and also Article (189), &c.

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54 Yards

1 po.

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