Stránka:book 1922.djvu/468

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438 The Book of Woodcraft Poison Sumac, Poison Elder. {Rhus Vernix) A small tree, 15 to 20 up to 25 feet high. Noted for being the most poisonous tree in the country. Its active principle is a fixed oil. This may be removed by washing with an alcoholic solution of sugar of lead ; it is a sure cure. When this remedy is not at hand, wash the parts with water as hot as one can stand, this is also a reliable remedy. The same remarks apply to Poison Ivy or Poison Oak. Leaves 6 to 15 inches long; leaflets 7 to 13 in numbers and 2 to 4 inches long. Timber is light and worthless. A cubic foot weighs 27 lbs. Damp woods.