. Botany of the southern states. In two parts. Part I. Structural and physiological botany and vegetable products. Part II. Descriptions of southern plants. Arranged on the natural system. Preceded by a Linnaean and a dichotomous analysis. Plants. 12 CELLULAR TISSUE. above appearance. Figs. 2 and 5. Sometimes the vacant spaces in the lining membrane form bands, Fig. 6 ; sometimes oval spaces, Fig. 7 ; sometimes it takes a spiral ar- Kj 9 F*a rangement, Fig. 8 ; sometimes that of star- ch shaped actinenchyma, as in Fig. 9, the pith of gg| the juncus. ^^ 13. To cellular tissue has been assigned
. Botany of the southern states. In two parts. Part I. Structural and physiological botany and vegetable products. Part II. Descriptions of southern plants. Arranged on the natural system. Preceded by a Linnaean and a dichotomous analysis. Plants. 12 CELLULAR TISSUE. above appearance. Figs. 2 and 5. Sometimes the vacant spaces in the lining membrane form bands, Fig. 6 ; sometimes oval spaces, Fig. 7 ; sometimes it takes a spiral ar- Kj 9 F*a rangement, Fig. 8 ; sometimes that of star- ch shaped actinenchyma, as in Fig. 9, the pith of gg| the juncus. ^^ 13. To cellular tissue has been assigned the ^*^ same place' in the vegetable economy that flesh A cell. • • ±1 -l J r i occupies in the animal, and we have no hes- itation in yielding to it in every respect the importance this comparison gives it. It constitutes the basis, physically con- sidered, of the vegetable kingdom. 14, Although the cells are without visible pores, yet the walls are permeable to fluids, as is proved by their being sometimes full, and at others empty. This may also be shown by taking a piece of the pith of the elder and letting a part of it com- municate with water, when the whole mass will become saturated with it; and it is a fact well understood at the present day, that animal and vegetable membrane, even when not under the in- fluence of vital power, is permeable to fluids under certain cir- cumstances ; that is, when opposite sides of the membrane are exposed to fluids of different density and the fluids are capable of wetting the membrane. This passage of fluids through membrane was called, by Du- trochet, Endosmosis (endon, inwards, and mao, I strive), and is one of the most common agents used by nature in the vegeta- ble economy for accomplishing her purposes. The reverse motion, that is, from within outwards, was called Exosmosis (exo, outwardly). They both take place at once, but the thinner fluid usually moves the most rapidly. 15. The bursting of capsules is produced by this ca
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