. Botany of the living plant. Botany. MECHANICAL CONSTRUCTION OF PLANT-BODY 151 spars of racing yachts, in wliich nitcrnal ties of metal fiave been used to meet tliat risk. In the haulms of Grasses, and conspicuously in tlie large Bamboos, hard woody septa at the level of the leaf-insertions serve the same purpose (Fig. 107). With- out these it would not be possible for hollow stems to uphold the huge head of leaves one hundred feet above ground against all winds, as the Giant Bamboos do. The hollow c>-lindrical stem of a Bamboo, or of a straw of wheat, n^ay be imagined as corresponding to
. Botany of the living plant. Botany. MECHANICAL CONSTRUCTION OF PLANT-BODY 151 spars of racing yachts, in wliich nitcrnal ties of metal fiave been used to meet tliat risk. In the haulms of Grasses, and conspicuously in tlie large Bamboos, hard woody septa at the level of the leaf-insertions serve the same purpose (Fig. 107). With- out these it would not be possible for hollow stems to uphold the huge head of leaves one hundred feet above ground against all winds, as the Giant Bamboos do. The hollow c>-lindrical stem of a Bamboo, or of a straw of wheat, n^ay be imagined as corresponding to a series of crossed girders (Fig. 108), with the straps or Ifanges all fused laterally, so as to form a firm peripheral band. The effective material is placed as far as possible from the centre. The straps being fused laterally, the connecting plate or web of the individual girders can be dispensed with, and the stem is accordingly hollow. But in many cases, and especially in young stems of Dicotyledons, the relation of the. Uiagraiii of crossed girders. See 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 Bower, F. O. (Frederick Orpen), 1855-1948. London, Macmillan and co. , limited
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1919
