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Vegetable secretions and the means by which by are effected by Kate L. Hudson, 1888

Vegetable secretions and the means by which by are effected by Kate L. Hudson, 1888, Page 25

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15428 2.1 in groups, but singly in the cell. The crystal is sometimes so large as to fill the greater part of the cell cavity. Fig. 2. represents the needle-shaped crystals (Raphides) found in the cells of the Tradiscantia. Here they are represented as freed from the cell, when they would be found lying parallel to each other in groups or bundles. Modifications of the quadratic system, the tetrahedral crystals, are present in the woody portions of the Ginkgo. See Fig. 3. same plate. Cystoliths are found by the infolding of the cell wall in the cell, upon which fold is deposited
 
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