Modulus of Rupture.

9500 (average of 118 tests by U. S. Forestry Div.).[56]

9200.

Remarks.

Wood sometimes commercially known as satin walnut and sometimes as star-leaved gum. Large specimens often have hollow butts. [p101]

FOOTNOTES

[55] E. C. Woodward, C. E. Division Engineer Texas & Pacific Ry. reports "gum" ties good after 5 years' service. They hold spikes well.

[56] See [page 6].

Sour Gum, Black Gum, Tupelo. Nyssa sylvatica Marsh.

Nomenclature. (Sudworth.)