Note. The above table may be used for larger circles in the following manner: For circles from 100 to 200 diameter, divide the diameter by 2, and find a diameter in the above table which corresponds to the quotient, then multiply the arca opposite to it by 4, which will give the area required; and for circles from 200 to 400 diameter, divide the diameter by 4, and multiply the area opposite to the quotient by 16. Example: To find the area of a circle 1624 diameter: 162814 area 5184.8 x 4 = 20739.2 the area of the circle required.

TABLE for reducing the Hypothenuse to the Horizontal Measure.

Note.-By this table every chain's length measured on the side of a hill must be shortened by the number of links opposite the angle of acclivity or declivity, or as near that angle as may be.

TABLE XIII.

TABLE of Square Links in any number of Acres, Roods, and Perches.

TABLE of Multipliers for Polygons from Three to Twelve Sides. See Polygons, p. 39.