Botany of the Southern states . VASCULAR TISSUE. 15 to which Schleiden gave the name of cytoblast (kiitos, a cell,and blastos, a germ), a nitrogenized body. As soon as the cyto-blast has attained its full size, there appears upon it a finetransparent vesicle. This is a young cell, which continues toswell out and increase in size till the cytoblast is only a minutebody, imbedded in the side of the wall, or sometimes loose inthe cavity. The cytoblast is sometimes absorbed after thegrowth of the cell, and at others it is permanent. 21. There is a mucilaginous layer on the inner surface of thecell
Botany of the Southern states . VASCULAR TISSUE. 15 to which Schleiden gave the name of cytoblast (kiitos, a cell,and blastos, a germ), a nitrogenized body. As soon as the cyto-blast has attained its full size, there appears upon it a finetransparent vesicle. This is a young cell, which continues toswell out and increase in size till the cytoblast is only a minutebody, imbedded in the side of the wall, or sometimes loose inthe cavity. The cytoblast is sometimes absorbed after thegrowth of the cell, and at others it is permanent. 21. There is a mucilaginous layer on the inner surface of thecell, which, with the cytoblast, seems to control all its vitalfunctions. It is a nitrogen compound, and has been called theinternal utricle. Section 2.— Vascular Tissue. 22. Vascular tissue consists of tubes whose length generally ex-ceeds several times their breadth. There are various kinds of it. Dotted Ducts, Fig. 13, are formed of a series of shortcylindrical cells, placed end to end. In their youngstate they may be separate
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