. Report on the relation of railroads to forest supplies and forestry : together with appendices on the structure of some timber ties, their behavior, and the cause of their decay in the road bed, on wood preservation, on metal ties, and on the use of spark arresters . uent; generally but one row is found on the side of thethin-walled tracheitis, where, in the preceding species, there are com-monly two rows. The medullary rays are in broati bantis, with a struct-ure almost identical with that of the Tamarack. In the tangential sec-tion the medullary rays are in single rows, except when inclosi
. Report on the relation of railroads to forest supplies and forestry : together with appendices on the structure of some timber ties, their behavior, and the cause of their decay in the road bed, on wood preservation, on metal ties, and on the use of spark arresters . uent; generally but one row is found on the side of thethin-walled tracheitis, where, in the preceding species, there are com-monly two rows. The medullary rays are in broati bantis, with a struct-ure almost identical with that of the Tamarack. In the tangential sec-tion the medullary rays are in single rows, except when inclosing aresin-canal; but the cells are larger and more conspicuous than in thepreceding species. Table I.—Comparative average number of fibers in a square of wood Too of an inch on aside, or —otttt of the area of a square inch. No. Woods. Remarks. 251290 329380387401402 White Oak 268 small fi bers in the dense masses. 150 Great variation in different specimens of tins thick tracheids; 70 thin tracheids. 60 thick tracheids; 30 tbin tracheids. 80 thick tracheids; 38 thin thick tracheids ; 33 thin tracheids, 54 thick tracheids; 24 thin tracheids. White Hemlock Tamarack 1 K, >( Forestry Division, Department of Lasix Occidentals; European Larch. Transverse Section x 100 Diameters.
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Keywords: ., boo, bookcentury1800, booksubjectforestsandforestry, bookyear1887
