Stránka:roll 1916.djvu/297

Things to Know and Do yellow-green shining leaves are sufficiently distinctive. A d'xoc- tion of Willow bark and roots is said to be the beat known sub- stitute for quinine. Noted for early leafing and late shedding; leaves 3 to 6 inches long. Wood pale, weak, soft, dose-grained ; a cubic foot we^ 28 lbs. Mnnitcba to Nova Scotia and Kmth to Gulf. Balsam Poplar, Balm of Gilead, or Tacamahac {Pofmlus balsamifera) Fifty or 60 feet ordinarily, but sometimes 100 feet high. Bark rough and furrowed. The great size of the buds and their thick shiny coat of fragrant gum are strong marks. Wood much as in the preceding, but weighs 23 lbs. a cubic foot Leaves 3 to 6 indies long. Canada and Northern States. Cottonwood {Popuhts ddioUes) Small and rare in the Northeast. Abundant and lar^ in West; even 1 50 feet high. Wood as in other poplars but weighs 2 4 lbs. a cubic foot. Leaves 3 to 5 inches long. Maine to Georgia uid west to Alborta. Black Walnut {Tuglans nigra) A magnificent forest tree up to 150 feet high; usually much smaller in the east. Wood, a dark piupUsh brown or gray; hard, dose-grained; strong; voy durable in iveather or ground