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FEET, INCHES AND SECONDS.

F. I.
Multiply 9 8 6
Ву
7 9 3

[tipher.
67 11 6 W

=prod. by the feet in the mul 7 3 4 6 "=ditto by the inches.

2 5 1 6=ditto by the seconds.

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Product, 55 2 9 3 9 48 11 2 8 10

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

By Decimals.
F. I.

F 1.
16 9

16 9=16,75 feet. 2 3

2 3= 2,25

n

336
4 2 3

8575 3350 3350

F.I. ins. 37,6875–87 8,8

ens. 378 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 soliú feet; of which 64 make half a cord, and 128 a cord.

EXAMPLE.

How many solid feet are contained in a load of wood, 7 feet 6 inches long, 4 feet 2 inches side, and 2 feet S inches high ?

7 ft. 6 in.=7,5 and 4 ft. 2 in.=4,167 and 2 ft. 3 int= 2,25; then, 7,5 X4,167=31,2525X2,2570,318125 solid feet, uns.

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 heighth 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 3 feet 9 inches wide and 2 feet 6 inches high. By Duodecimals. By Decimals.

F. in.
3 9

9,75
%6

2,5

[blocks in formation]

9 4 6 9,375

F. in. ins. 4 8 3 4,6875=4. 8t, or half a cord and

84 inches over. The foregoing method is concise and easy to those who are well acquainted with Duodecimals, but the following Table will give the content of any load of wood, by inspection only, sufficiently exaof for common practice ; which will be found very convenient

16171819 110

9.1

A TABLE of Breadth, Height, and Content. Breadth. || Height in fecl.

Inches. ft. in. 1|2|3|4||1|2|S 4 5 6 2 6 15/30/45/60 1 245 6 7 | 9/10/11/13

7 16 31 4762||1|3 4 5 6 8 9.610 12 15 8 16|32|48|64|| 1 3 4 5 7 8 9 11 12 13 9 17 334966|| 1 3146 7 8 9 11 12 14 10 17|34|51|68 2 3 4 6 7 9 10 11 13 14

11 118 35 53170 31416 7 10121.13 15 S 0 1886 54 72|| 23/5/6 8 9|11|1214/15

1 1937|56|74| 2 3 5 | 6 8 9 11 12 14 16 2 l|19|38|57|76| 23 5 6 8 10 11 13 14 16 319 39 59 78}|2|3 5 7 8 10 11 13 15 16 4 | 20/40/60/80/1 2 3 5 7 8 10 12/13 15 17 5 ||21|41)62821 23 5 7 8 | 10 |12|14|16/17 6 214216384 2 4 5 7 911 12 14 16:18 7 | 22 43|64|86|| 2 4 5 7 9 11 13 14 16 18 8 2244/66 881 2 4617 9 11 13 15 17|18 9 23 45|68|90|| 24167

9 11 13 15 17 19 10 23 4669 92] 214 6 7 9 12 |13|15|17|19

11 23|47|70|94|| 214618 10 12 14 16 18 20 4 0 -24/48172|96|| 2141618 1012 14|16|1820

TO USE THE FOREGOING TABLE. First measure the breadth and height of your load to nearest average inch; then find the breadth in the left ha column of the table; then move to the right on the same till you come under the height in feet, and you will have content in inches, answering the feet, to which add the c tent of the inches on the right and divide the sum by 12, ; you will have the true content of the load in feet and inche

NOTE.-The contents answering the inches being alw; small, may be added by inspection.

EXAMPLES. 1. Admit a load of wood is 3 feet 4 inches wide, and 2 1 10 inches high ; required the content.

Thus, against 3 ft. 4 inches, and under 2 feet, sia ds 40 ini es; and under 10 inches at top, stands 17 inches: then 40 17=57 true content in inches, which divide by 12 gives 4 fi 9 inches, the answer.

2. The breadth being 3 feet, and height 2 feet 8 inche required the content.

Thus, with breadth feet o inches, and under 2 fi

atop, stands 36 inches; and under 8 inches, stands 12 inches • now 36 and 12, make 48, the answer in inches; and 48+12=4 feet, or just half a cord.

3. Admit the breadth to be 3 feet 1.1 inches, and height 3 feet 9 inches; required the content.

Under 3 feet at top, stands 70; and under 9 inches, is 13: 70 anel 13, make 88:19=7 feet 4 inches, or 7 ft. 1 qr. 2 inches, the answera

2

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

annum, Compound Interest, for 20 years.
I'rs. 5 per cent.(6 per cent. Prs. 15 per cent.16 per cent.
1,05000 1,06000

11

1,71034 1,89829 2 1,10250 1,12360 1,79585 2,01219 S 1,15762 | 1,19101 15 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 1,54009 1,41851 16

2,18287

2,54727 1,407101,50363 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 1,79084

20 2,65929 3,20713 VII. The weights of the coins of the United States.

pret. gr. Eagles,

11 6

Standard
Half-Eagles,

5 15

Gold.
Quarter-Eagles, 2 191
Dollars,

17 8
Half-Dollars,

8 16

Standard
Quarter-Dollars,

8
Dimes,

Silver.

1 173 Hale Dimes,

203

8 16 Half-Cente,

Copper.

4 8 The standard for gold coin is 11 parts pure gold, and one part alloy-the alloy to consist of silver and copper. The standard for silver coin is 1485 varts fine to 179 parts alloy-the alloy to be what ly corper.

Cents,

}

ANNUITIES.
TABLE II.

TABLE III. Showing the amount of Showing the present

£ i annuity, forborne worth of 21 annuity, for 31 years or under, to continue for si at 5 and 6 per cent.l years, at 5 and 6 perty

compound interest. cent. compound int. Frs. 5 6 5

6 1 1,000000 1,0000000,9523811 0,943396 2 2 2,050000 2,060000 1,859410 1,833393 S 3,152500 3,185600 2,723248 2,673012 4 4,310125) 4,3746161 3,545950 3,465106 5 5,52563 1 5,6371934,329477 4,212364 6 6,501919 6,975319 5,075692 4,917324 7 8,142009 8,395858 5,786278 5,582381 8 9,549109 9,897468|| 6,463213 6,209794 9 11,026564 11,4913167,107822 6,801692 10 12,57789215,180770 7,721735) 7,360087 11 14,206787 14,9716438,306414 77,886875. 12 15,917126 16,869942|8,863252 8,383844 13 17,712982|18,882130|| 9,393573 8,852683 14 (19,598632 21,015066|| 9,8986411 9,294984 15 21,578564 23,275969|10,379658| 9,712249 16 23,65749225,672528|10,837.769 10,105895 17 25,840366 28,212380|11,274066 10,477260 18 28,132385 30,90565311,689587 10,827603 19 50,539004 33,759992||12,085321/11,158116 20 33,065954 36,785592|12,46221011,469921 21 135,719252|39,992727||12,821153 11,764077 22 38,505214 43,39229113,163003 12,041582 23 41,430475 46,995828||13,488574/12,303380 24 44,501999|50,81557813,798642 12,550357 25 47,727099 54,864512 14,093944 12,783356 26 51,113454 59,156382|14,375185 13,003166 27 54,669126 63,70576514,643034 13,210534 28 158,402583 68,52811214,89812713,406164 29 62,32271273,639798 15,141073 13,590721 30 66,438847 79,058186||15,372451 13,764831 si 70,760790 84,801677||15,59281013,929086

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