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TABLE III.

ROODS AND PERCHES IN DECIMAL PARTS OF AN ACRE. One Acre=4 Roods=160 Perches =4,840 Square Yards=43,560 Square Feet

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DECIMALS OF AN ACRE IN ONE CHAIN LENGTH OF 100 FEET

AND OF VARIOUS WIDTHS.

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TABLE V.

ACRES, ROODS, AND PERCHES IN SQUARE FEET.

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.01745329 .03490658 .05235988 .06981317 .08726646 . 10471975 . 12217305 .13962634

.00029089 .00058178 .00087266 .00116355 .00145444 .00174533 .00203622 .00232711

.00000485 .00000970 .00001 454 .00001939 .00002424 .00002909 .00003394 .00003878

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.0000.0833.1667.2500.3333.4167.5000.5833.6667-7500.8333.9167 0 1 16 .0052.0855.1719.2552.3385-4219-5052.5885.6719-7552.8385.9219 16

.0104.0938.1771.2604-3438.4271.5104-5938.6771.7604.8438.9271 16.0156.0990.1823.2656-3490.4323-5156.5990 .6823. 7656.8490.9323 1 .0208.1042.1875.2708.3542.4375.5208.6042.6875 - 7708.85421.9375

.02601094.1927.2760.3594 4427 -5260.6094.6927 -7760.8594.9427 16

.0313.1146.1979.2813.3646.4479.5313.6146.6979-7813.8646.9479 16 .0365.1198.2031.2865-3698.4531.5365.6198.7031.7865.8698.953.0 16.

.0417.1250.2083.2917-3750.4583.5417.6250.7083 -7917.8750.9583 16.0469-1302.2135.2969-3802 .4635 - 5469.6302-7135.7969.8802.9635 16 š.0521.1354.2188.3021.3854.4688.5521.6354.7188.8021.8854.9688

.0573.1406.2240.3073 - 3906.4740.55736406.7240.8073.8906.9740

1.0625.1458.2292.3125-3958.4792.5625.6458.7292.8125.8958.9792 180677.1510.2344-3177.4010.4844.5677.65101.7344.8177.9010.984 + s 0829.1563.2396.3229.4063.4896.5729.65637396.8229.9063.9896,

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TABLE IX.

RADII AND THEIR LOGARITHMS, MIDDLE ORDI

NATES, AND DEFLECTION DISTANCES.

NOTE. —This table applies to chords of 100-feet units. To use it for chords of 20-metre units, divide the degree of the proposed metric curve by 2 and find the quotient in the first column of the table;' or multiply any tabular degree of curve by 2 for the degree of the proposed metric curve.

Then onetenth of the radius opposite the tabular degree thus found or assumed will give very nearly the true radius in metres of the proposed metric curve, and four-tenths of the corr

orresponding figures in the last three columns will give very nearly the values of those functions in metric measure. Thus, if a 3° metric curve be proposed, we take one-tenth of the radius opposite the tabular degree 1° 30', or 382 metres, and find the values of the functions in the last three columns to be .1308, 1.048, and .524. Resulting ors may be ne ected except in work of extraordinary accuracy.

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