On drier and higher soils are the persimmon, sassafras, red maple, elm, black haw, hawthorn, various oaks (in all 10 species occur), hickories and splendid forests of longleaf and loblolly yellow pine. [Please select]
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--Cross section of longleaf pine showing several growth rings with variations in the width of the dark-colored late wood. [Please select]
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_] Specifications for paving blocks often require that longleaf pine be 90 per cent heart. [Please select]
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Some experiments[28] on very resinous longleaf pine specimens, however, indicate an increase in strength. [Please select]
The effect varies somewhat with different species, chestnut, for example, becoming more brittle upon drying than do ash, hemlock, and longleaf pine. [Please select]
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Thus in green wood tested in static bending it varies from 643,000 pounds per square inch for arborvitæ to 1,662,000 pounds for longleaf pine, and 1,769,000 pounds for pignut hickory. [Please select]
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