. The principles of agriculture; a text-book for schools and rural societies . hedenser solution; hence the piecesabsorb water. Of those pieces instrong salt solution the flow ofwater is outward, and the potatosegments lose some of their waterand become flaccid. See Atkin-sons Elementary Botany, 185a. A cross-section of a root-let in Fig. 35 shows the root hairs. These hairs are seen to beprolongations of the outer or epidermal cells. 1856. By germinating a bean, pumpkin seed, or wheat inmoss, or between folds of moist thick cloth, the root-hairs maybe observed. Fig. 36 shows the fri
. The principles of agriculture; a text-book for schools and rural societies . hedenser solution; hence the piecesabsorb water. Of those pieces instrong salt solution the flow ofwater is outward, and the potatosegments lose some of their waterand become flaccid. See Atkin-sons Elementary Botany, 185a. A cross-section of a root-let in Fig. 35 shows the root hairs. These hairs are seen to beprolongations of the outer or epidermal cells. 1856. By germinating a bean, pumpkin seed, or wheat inmoss, or between folds of moist thick cloth, the root-hairs maybe observed. Fig. 36 shows the fringe of hairs on such a seed-ling ; and Fig. 37 shows how the root-hairs attach the soilparticles to the root. For a longer account of root-structuresand root-action, compare Sorauer, Physiology of Plants for theUse of Gardeners, pp. 4-7. 186a. Any one who has handled both green and dry fodderhas a general idea of how much water there may be in do apples and grapes and cabbages shrivel after they arepicked ? 188a. A single epidermal pore is a stoma or stomate. The. Fig. 35. Root-hairs, eularged. HOW THE PLANT LIVES 125 plural is stomata or stomates. Fig. 38 shows a fragment of leafin cross-section, a being a stoma opening out on the lower sur-face. Looking down upon thepeeled-ofif epidermis of the lowersurface, stomata are seen at Fig. Cut off a leafy branch ofany herb, insert the stem througha perforated cork into a bottle ofwater, and then place the wholeunder a bell-glass. Note how soonthe water vapor thrown off condensesupon the glass. Compare Fig. 10,page \ The rate of tran-spiration from a single leafmay be accurately observedas follows : A large U-shaped glass tube is filledwith water, and into one endof this tube is inserted aperforated cork bearing asmall glass tube or capillaryarm, bent at right the other end of the U-tube is fitted a cork, throughthe perforation in which isinserted the leaf-stalk, with the stem reachingthe water, a
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
