Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 669
thatorder, are known as 1 bordered pits, and the elongated cells in whichthey occur as tracheides. All the more perfect forms of Phanerogams contain, in somepart of their fabric, the peculiar structures which are known asspiral vessels.1 These have the elongated shape of fibre-cells ; butthe… … 1 So long, however, as they retain their original cellular character, and do notcoalesce with each other, these fusiform spiral cells cannot be regarded as havingany more claim to the designation of vessels, than have the elongated cells of thewoodv tissue. STRUCTURE OF WOODY TISSUE 623 -senting…
Microscopy
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