. Report upon the forestry investigations of the U. S. Department of agriculture. 1877-1898. Forests and forestry. 106 FORESTRY INVESTIGATIONS U. S. DEPARTMENT OF AGRICULTURE. 2. Pith lays not or larely broader than the pores, fine but conspicuous a. Wood heavy and hard, usually of darter ieddish coloi and commonly spotted on cross maple. b. Wood of medium weight and hardness, usually light colored Silver maple. Red maple is not always safely distinguished from soft maple. In box elder the pores are finer and more numerous than in soft maple The various species of elm may be disti
. Report upon the forestry investigations of the U. S. Department of agriculture. 1877-1898. Forests and forestry. 106 FORESTRY INVESTIGATIONS U. S. DEPARTMENT OF AGRICULTURE. 2. Pith lays not or larely broader than the pores, fine but conspicuous a. Wood heavy and hard, usually of darter ieddish coloi and commonly spotted on cross maple. b. Wood of medium weight and hardness, usually light colored Silver maple. Red maple is not always safely distinguished from soft maple. In box elder the pores are finer and more numerous than in soft maple The various species of elm may be distinguished as follows: 1. Poies of spring wood form a bioad baud of several rows; easy splitting, dark biown heart Med elm. 2. Pores of spring wood usually m a single row, or nearly so. a. Pores ol spring wood large, conspicuously so White elm. b. Pores of spring wood small to minute. a'. Lines of pores in summer wood fine, not as wide as the intermediate spaces, giving rise to very compact gram BocJc elm. V. Lines of pores broad, commonly as wide as the intermediate spaces Winged elm. c. Pores in spi mg wood indistinct, and therefore haidly a ring-porous wood Cedar su^v: > Fig V) —"Wood of wain at p r, pith rays e Z, conccntriclmcs, v, Teasels or ports, i (/ w , summer wood sp w , spring wood. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Fernow, B. E. (Bernhard Eduard), 1851-1923; United States. Forest Service. Washington, Govt. print. off.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectforestsandforestry
