. Wood and forest . 57 DJAtlETERS PITH RAYS- CR055-5ECTWH o-Antms. PITH RAYS • PORE RADiAL SECTION37 DiAntTess RiriQ-POROUS WOOD (white ash) TORtTAH6EMT1AL SECTIOM ^7 OI^METtRi ^ Iig. 30. is by means of the number and distribution of tliese elements thatparticular woods are identified microscopically. See p. 289. Bing-porous luoods. Looking thru the microscope at a cross-sectionof ash, a ring-porous wood, Fig. 20: (1) The large round or oval pores or vessels grouped mostly inthe spring wood first attract attention. Smaller ones, Ijut still quite 30 WOOD AND FOREST. distinct, are to be seen sca
. Wood and forest . 57 DJAtlETERS PITH RAYS- CR055-5ECTWH o-Antms. PITH RAYS • PORE RADiAL SECTION37 DiAntTess RiriQ-POROUS WOOD (white ash) TORtTAH6EMT1AL SECTIOM ^7 OI^METtRi ^ Iig. 30. is by means of the number and distribution of tliese elements thatparticular woods are identified microscopically. See p. 289. Bing-porous luoods. Looking thru the microscope at a cross-sectionof ash, a ring-porous wood, Fig. 20: (1) The large round or oval pores or vessels grouped mostly inthe spring wood first attract attention. Smaller ones, Ijut still quite 30 WOOD AND FOREST. distinct, are to be seen scattered all thru the wood. It is by the num-ber and distribution of these jjores that the different oak woods aredistinguished, those in white oak being smaller and more numerous,while in red oak they are fewer and larger. It is evident that thegreater their share in the volume, the lighter in weight and theweaker will be the wood. In a magnified cross-section of some woods,as black locust, white elm and chestnut, see Chap. Ill, beautiful pat-terns are to he se
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectforests, bookyear1912
