365 Days, 5 Hours, 48 Minutes, 57 Seconds, 39 Thirds, are

a Solar Year.

The Year is also divided into 12 unequal Calendar Months, called,

1

January, February, March, April, May, June, July, August, September, October, November, December.

And to know how many Days are in each Month, observe to get by heart the following Lines:

Thirty Days hath September,
April, June, and November;
February hath twenty-eight alone,
And all the rest have thirty-one;
Except Leap Year, and then's the Time,
February's Days are twenty-nine.

EXAMPLES.

(57) How many Hours, Minutes, and Seconds, are there in a

Week, or 7 Days?

(58) In 60480 Seconds, how many Days?

(59) Reduce 6 mo. 4 d. to sec.

(60) In 14860800 sec. how many Months?

(61) How many Seconds are there in a Julian Year, or in 365

Days, 6 Hours?

(62) In 31557600 sec. how many Days?

(63) How many Thirds are there in a Solar Year, or in 365

Days, 5 Hours, 48 Minutes, 57 Seconds, and 39
Thirds?

(64) Reduce 1893416259 Thirds to Days.

2724 Feet is one Rod of Brick Work.

100 Square Feet is one Square of Flooring.

By this Measure are measured all Things in which Length

and Breadth are only considered.

1

EXAMPLES.

(65) In 42 Square Yards, how many Square Inches?
(66) How many Square Yards in 54432 Square Inches?

(67) Reduce 3 sq. 42 Feet, 64 in. of Flooring to Inches.
(68) How many Squares are there in 49312 square Inches?

CUBIC or SOLID MEASURE.

A Solid Yard of Earth is called a Load.

108 Solid Feet, i. e. 12 Feet long, 3 Feet broad, and 3 Feet deep, or commonly 14 Feet long, 3 Feet 1 Inch broad, and 3 Feet 1 Inch deep, is a Stack of Wood; 128 solid Feet, i. e. 8 Feet long, 4 Feet broad, and 4 deep, is a Cord of Wood.

By this Measure are measured all Things in which are considered Length, Breadth, and Depth or Thicknes

EXAMPLES.

(69) In 27 solid Yards, how many solid Inches? (70) Reduce 1259712 solid Inches to solid Yards.

(71) How many solid Inches are there in 4 Tons 24 Feet of

hewn Timber?

(72) In 387072 solid Inches, how many Tons of hewn Timber? Of some particular WARES or GOODS.

12

12 Dozen

12 Gross

20

make one

Dozen.

Gross.

Great Gross.

Score.

BOOK II.

EXERCISES in NUMERATION.

IN Figures express the following Numbers, viz.

(1) One Million and a Half in South Sea Bonds.

(2) Threescore and twelve Thousand thirteen Hundred

Weight of Lead.

(3) Fifteen Thousand and fourscore Million of Stivers.

(4) One Hundred and twenty Thousand two Hundred and six Millions seventy Thousand seven Hundred and seven Rials

of Plate.

(5) Three Millions and thirty-three Thousand and Thirty Pieces of Eight.

(6) Four Hundred Thousand and forty Hundred Pounds, thirty-four Shillings, and fourteen Pence five Farthings.

ADDITION.

EXAMPLES of INTEGERS.

(1) Add the following Numbers, viz. 140724, 296, 42, 6740, 64167, 20, 2687, and 2634 together.

(2) Add 27460, 176, 2900, 274, 1004, 64, 596, 41, and 610+ together.

(3) Add 867, 317, 69, 1720, 276842, 49, 426074, and 60 together.

VII. COMPOUND ADDITION

TEACHETH to add sundry Sums or Numbers together having different Denominations : as in Money, Weights, Measures, &c.

RULE.

1. Place the Numbers of a like Denomination under each other, viz. Pounds under Pounds, Shillings under Shillings, Pence under Pence, Farthings under Farthings, &c.

C

RULE.

2. Begin to add at the lowest Denomination first, as in Integers, then divide that Sum by as many of the same Denomination as make one of the next greater, setting down the Remainder under the Row added; and carry the Quotient to the next superior or greater Denomination, whose Sum you must also find: proceed in this manner to the last, or greatest Denomination, which add as Integers.

(4) Add 270l. 16s. 6d. 601. 104d. 60l. 10s. d. 961 6s. 10d. 1761. 6s. 6d. 21. 2s. 161. 17s. 6d. and 100l. into one Sum. (5) Add 260/. 17s. 671. 10s. 10 d. 170l. 10s. d. 100l. 10s. 6d. 41. 16s. 6d. 19s. d. 371. 11s. 11d. 600l. 10s. and 2201. 64d. into one Sum.

(6) Add 2761. 17s. 161. 104d. 2691. 118. 11 d. 1071. 198. 10l. 6d. 148. 11d. 3671. 17s. 6d. 12s. 4 d. 20l. 10s. 6d. and 1000l. into one Sum.

OF WEIGHTS and MEASURES.

lb. oz. dwts.grs.

(2) 27 10 17 11

oz.dwts.grs.

(1) 27 11 20 17 14 21

33 grs. (3) 112117