Rule. - Take the dimensions, in inches and decimal parts of an inch. Square the diameter, multiply it by the length in inches, and then multiply the product by .0034 for Wine Gallons, or by .002785 for Ale Gallons.

Example. - How many U. S. Gallons will a Cylindrical Vessel contain, whose diameter is 9 inches, and length 9 inches?

Diameter,

9

9

Square Diam

81

Length,

9.5

405

729

Carried up,

769.5

brought up

769.5

.0034

30780

23085

.

2.61630

or 2 gallons and 5 pints.