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Comparative Value Of Fuel

Shellbark Hickory. .100 Pig-nut Hickory..

White Ash 77 Yellow Oak.......

White Elm 58 Red Oak...

Black Birch. 62 Yellow Pine..

White Birch 48 White Pine.. 95 White Oak. .84 60 Hard Maple. .69 White Beech. .54 Chestnut .42 59 .65 52 The same species of wood may vary in density and value, being best if grown on dry land and exposed or in open ground. Some kinds of wood, such as hickory, owe a large share of their value to the heat of the coals left after burning. Allowance is to be made for extraordinary dryness or moisture of the article weighed or measured, and for different sizes of cups and spoons, but the tables are as correct as can be made. In "Liquids," the old French measure was "1 tea-cup equals 4 fluid ounces or 1 gill," the tea-cup being half the size of the one in use at present. (346)