Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 311
um, both between itscellulose coat and its primordial utricle, and within thelatter; and the ciliary action by which, according to thetestimony of some good observers, this circulation is main-tained. It is not difficult to distinguish this movement alongthe convex and concave edges of the cell of… … Economy of Closterium lunula:—k, frond showing central separa-tion at a, in which large glohules, h, are not seen;—b, one extremityenlarged, showing at a the double row of cilia, at b the internal cur-rent, and at c the external current;—c, external jet produced bypressure on the frond;—d, frond in…
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