20.
Modulus of Elasticity.
910,000 (average of 87 tests by U. S. Forestry Div.).
570,000.
Modulus of Rupture.
6310 (average of 87 tests by U. S. Forestry Div.).
6400.
Remarks.
Grows chiefly in swamps. "White cedar posts" last many years. Thyoides is from Thuya meaning arborvitæ and eidos, the Greek for "resemblance." [p174]