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FEET, INCHES, AND SECONDS.

F.I. Multiply 9 8 6 By 3

multiplier 67 11 6

=prod. by the feet in the hy 3 4 6 1 =ditto by the inches.

2 5 1 6 ditto by the seconds.

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1.

I. Multiply 1

9

5 By og 8 9

8 9 10

ni ini Product, 55 2 9 3 9 48 11.2 8 10

How many square feet in a board 16 feet 9 inches long, and 2 feet 3 inches wide ? By Duodecimals.

By Decimals.
F. I.

F. 1.
16 9

16 9=16,75 feet 2 3

2 3=2,25

33

6
4 2 3

8375 3350 3350

F. 1. Ans. 37,6875=37 S

Ans. 37 8 3

TO MEASURE LOADS OF WOOD.

RULE. Multiply the length by the breadth, and the product by the depth or height, which will give the content in solid feet ; of which 64 make half a cord, and 128 a cord,

EXAMPLES.

How

many solid feet are contained in a load of wood, 7 feet 6 inches long, 4 feet 2 inches wide, and 2 feet 3 inches high ? 7 ft. 6 in.=7,5 and 4 ft. 2 in.=4,167 and 2 ft. 3 in. 2,25; then, 7,5 X4,167=31,2525 X 2,270,318125 solid feet, Ans.

But loads of wood are commonly estimated by the foot, allowing the load to be 8 feet long, 4 feet wide, and then 2 feet high will make half a cord, which is called 4 feet of wood; but if the breadth of the load be less than 4 feet, its height must be increased so as to make half a cord, which is still called 4 feet of wood.

By measuring the breadth and height of the load, the content may be found by the following

RULE. Multiply the breadth by the height and half the product will be the content in feet and inches.

EXAMPLE Required the content of a load of wood which is 8 feet 9 inches wide and 2 feet 6 inches high. By Duodecimals. By Decimals. F. in.

F. 3 9

3,75 2 6

2,5

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9 4 6

9,375

F. in. Ans. 4 8 3 4,6875=4 87, or half a cord

and 8 inches over. The foregoing method is concise and easy to those who are well acquainted wiih Duodecimais, but the following table will give the content of any load o Wood, by inspection only, sufficiently exact for common practice; and will found very convenient.

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inches; and under 8 inches, stands 12 inches : now 36 and 12, make 48, the answer in inches; and 48: 135 4 feet, or just half a cord.

3. Admit the breadth to be 3 feet 11 inches, and height 3 feet 9 inches; required the content.

Under 3 feet at top, stands 70; and under 9 inches, is 18 : 70 and 18, make 88–12=7 feet 4 inches, or ? ft. I qr. 2 inches, the answer.

TABLE I. Showing the amount of £1, or $1, at 5 and 6 per cent.

per annum, Compound Interest, for 20 years. Yrs. 15 per cent. 16 per cent. Yrs. 5 per cent. 16 per cent.

1 1,05000 1,06000 11 1,71034 1,89829 2 1,10250 1,12360 12 1,79585 2,01219 3 1,15762 1,19101

13

1,88565 2,13292 4 1,21550 1,26247 14 1,97993 2,26090 5 1,27628 1,33822 15 2,07893 2,39655 6

1,34009 1,41851 16 2,18287 2,54727

1,40710 1,50363 17 2,29201 2,69277 8 1,47745

1,59384 18 2,40661 2,85433 9

1,55132 1,68947 19 2,52695 3,02559 10 1,62889 | 1,79034 | 20 | 2,65329 | 3,20713 VII. The weights of the coins of the United Statesa

put.

gr. Eagles,

11 6 Half-Eagles,

Standard

5 15 Quarter-Eagles,

Gold.

2 193 Dollars,

17 8 Half-Dollars,

8 16 Quarter-Dollars,

Standard
4. 8

Silver,
Half-dimes,

207
Cents,

8 16 Half-Cents,

4 8 The standard for coin is 11 parts pure gold, and I part alloy the alloy to consist of a ver and copper. is 1485 parts fine to 179 parts alloy-the alloy to be wholly coppera

The standard for silver coiu

Dimes,

1 : 173

} Copper

ANNUITIES.

TABLE II.

TABLE III. Showing the amount of 1l. annui-Showing the present worth

ty, forborne for 31 years or un. of il. annuity, to contin. der, at 5 and 6 per cent. compound ue for 31 years, at 5 and interest.

6 per cent. compound int. Yrs. 5

6

5

6 1 1,000000 1,000000 0,9523811 0,943396 22,050000 2,060000 1,859410 1,833393 3 3,152500 3,183600 | 2,723248 2,673012 4 4,310125 4,374616 | 3,545950 3,465106 5 5,525631 5,637193 | 4,329477 4,212364 6 6,801913 6,975316 5,075692 4,917324 7 8,142009 8,393838|| 5,786278 5,582381 8 9,549109 9,897468 | 6,463213 6,209794 9 11,026564|11,491316|| 7,107822 6,801692 10 12,57789213,180770|| 7,721735 7,360087 il 14,20678714,971643 8,306414 7,886875 12 15,917126 16,869942|| 8,863252 8,3838441 13 17,71293218,882138| 9,393573 8,852683 14 19,59863221,015066 9,898641 9,294984 15 21,57856423,275969||10,379658 9,712249, 16 23,657492 25,67252810,837769 10,105895 17 25,840366 28,21238011,274066 10,477260 18 28,132385 30,90565311,689587 10,827603 19 30,53900433,759992|12,085321 11,158116 20 33,065954 36,785592||12,462210/11,469921 21 35,71925239,992727|12,821153 11,764077 22 38,50521443,39229113,163003 12,041582 23 41,430475 46,995828||13,48857412,303380 24 44,501999 50,815578|(13,79864212,550357 25 47,727099|54,864512114,093944 12,783356 26 51,113454/59,156382|14,375185 13,003166 27 54,66912663,70576514,64303413,210534 28 58,40258368,528112||14,898127 13,406164 29 162,32271273,639798|15,141073 13,590821 30 66,438847179,058186|15,372451 13,764831 31 70,760790)84,801677||15,592810/13,929086

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