Alterations and Additions I have made in this will merit the Approbation of those Gentlemen who have kindly interested themselves in Behalf of my former Endeavours, to whom I return my most sincere Thanks; and remain,

With the utmost Esteem and Respect,
Their's and the Public's much obliged,
Obedient humble Servant,

CHARLES VYSE,

Lambeth, 1804.

}

Its Use

Rule of Three

172

- 177

179

Single 181

{Single 181

Annuities, Pensions in

Arrears

Present Worth of An-

Annuities, Leases, &c.

taken in Reversion - 216

Double 185 | Rebate or Discount

Vibrations of Pendulums 186 | Purchasing Freehold or

- 217

Real Estates

Ditto in Reversion

Questions

Annuities, Pensions, &c.

in Arrears

-

EXPLANATION of the CHARACTERS made Use of in this BOOK.

Signs.

+

x

=

Names.

Plus, or more,

Minus, or less,

{ Multiplied }

into or by S
Divide by
Equal to
Is to

:

::

So is

SExtraction

Lof the Roots

Significations.

The Sign of Addition, as 6+2 is 8.
The Sign of Subtraction, as 6-2 is 4.
The Sign of Multiplication, as 6×2 is
12.

The Sign of Division, as 6÷2 is 3.
The Sign of Equality, 6+2=8.
The Signs of Proportionals, as
2:46: 12.

The Square Root of 93is2/93, and
the Cube Root of 82 is3/8=2.

6—4×9—18; Signifies, that 6, less 4, multiplied by 9—18.

N. B. 8 denotes that 8 is to be squared.

93 denotes that 9 is to be cubed.

3/4, or 43, denotes the Cube Root of the Number 4.

2

The Twelve SIGNS of the ZODIAC.

Aries, the Ram.

8 Taurus, the Bull.
П Gemini the Twins.
Cancer, the Crab.
Leo, the Lion.
mg Virgo, the Virgin.

Libra, the Balance. m Scorpio, the Scorpion. Sagittarius, the Archer. Capricornus, the Goat. Aquarius, the Water-bearer. * Pisces, the Fishes.