. Plant life, considered with special references to form and function. Plant physiology. I 12 PLANT LIFE. outer one, so as to isolate a mass of tissues of greater or less size, ^^'llen this mass is killed by the formation of a sheet of coric on its inner face it gradually dries up and ultimately breaks away in the form of a seale or flake (fig. 129). I'.ark of this sort, such as that of the hickory, sycamore, or Fig, 129.—Part of a haiisxxrst; section of tht^ Luik nf ,, layers of cork formed by a tratisieiit cnrk caniljiuni. s, thin-wallcd tissues, with occasiotial stone cel
. Plant life, considered with special references to form and function. Plant physiology. I 12 PLANT LIFE. outer one, so as to isolate a mass of tissues of greater or less size, ^^'llen this mass is killed by the formation of a sheet of coric on its inner face it gradually dries up and ultimately breaks away in the form of a seale or flake (fig. 129). I'.ark of this sort, such as that of the hickory, sycamore, or Fig, 129.—Part of a haiisxxrst; section of tht^ Luik nf ,, layers of cork formed by a tratisieiit cnrk caniljiuni. s, thin-wallcd tissues, with occasiotial stone cells, 'riie sheets of cork cells are lines of weakness along which the tiakes of bark split off. Magnified 665 diam.—After Warnecke. is known as scaly bark. In other trees the dead outer por- tions are jiersistent, and are only gradually worn a\va\' by the action of the weather. Stieh persistent jiarts become seamed or deeply furrowed lengthwise by the increased size of the stem within and the constant tlrying and shrinking of the dead parts. Such bark is (ailed furrowed or ridgy 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 Barnes, Charles Reid, 1858-1910. New York, H. Holt & company
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectplantphysiology
