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Again,

33 mean proportional

Multiply by 31 least diameter

33

99

Product 1023 to be subtracted.

And,

35 greatest diameter

Multiply by 35 greatest diameter

175 105

Product 1225 square of the greatest diameter 1023 product to be subtracted

202 remainder

Multiply by 35 greatest diameter

1010 606

7070 product.

Multiply by 13 one-third the altitude

21210
7070

35314) 91910 product

Quotient 22977.5

Wherefore it will be,

W.G. circ. divisor 294) 22977.5 (78 15 wine gallons.

A. G. circ. divisor 359) 22977·5 (64.00 ale gallons.

M. B. circ. divisor 2738) 22977.5 ( 8.39 malt bushels. For the Less Hoof.

The mean proportional between the greatest and least diameters, as already found, is,

33 mean proportional

Multiply by 35 greatest diameter

165 99

Product 1155

31 × 31 = 961 sq. of the least diameter

[blocks in formation]

And,

W.G. circ. divisor 294) 19545-5 (66-48 wine gallons.

A. G. circ. divisor 359) 19545·5 (54.44 ale gallons.

M. B. circ. divisor 2738) 19545·5 (7·13 malt bushels

PROBLEM XVIII.

To determine the Content of the Ungula of a Square

Pyramid.

RULE.

FOR THE GREATER HOOF.

Multiply the greatest breadth by the least, and to the product add twice the square of the greatest: then multiply the sum by one-sixth part the altitude or depth, and divide the product by the number of cubic inches in the proposed integer.

FOR THE LESS HOOF.

Multiply the greatest breadth by the least, and to the product add twice the square of the least: then multiply the sum by one-sixth part the altitude or depth, and divide the product by the number of cubic inches in the proposed integer.

EXAMPLE.

Let ABD be the greater hoof, and ACD, the less

hoof of the frustum of a square pyramid; the greatest width, AB, being 43 inches; the least, CD, 25 inches; and the perpendicular depth, 24 inches: the content of each hoof is required in wine gallons, ale gallons, and malt bushels.

B

SOLUTION.

For the Greater Hoof.

43 greatest breadth

Multiply by 25 least breadth

215 86

Product 1075

43 x 43 x 2 = 3698 twice the square of AB.

Sum 4773

Multiply by 4 one-sixth the depth

W.G. divisor 231) 19092 (82.65 wine gallons.

A. G. divisor 282) 19092 (67-70 ale gallons.

M. B. divisor 2150) 19092 (8.88 malt bushels.

For the Less Hoof.

43 greatest breadth

Multiply by 25 least breadth

215

86

Product 1075

25 × 25 × 2 = 1250 twice the square of CD.

Sum 2325

Multiply by 4 one-sixth the altitude

W.G. divisor 231) 9300 (40-26 wine gallons.

A. G. divisor 282) 9300 (32.97 ale gallons.

M. B. divisor 2150) 9300 (4.32 malt bushels.

PROBLEM XIX.

To determine the Content of the Segment of a Sphere.

RULE.

By the Pen.

To the square of the altitude, add three times the square of half the diameter of the base, and multiply the sum by the altitude; then divide the product by the spherical divisor for the proposed integer, and the quotient will be the content.

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