Abstract
A study of the absorption of Fe by the root hairs of Trianea bogatensis indicates that Fe is readily absorbed. On the other hand Ca is a relatively non-penetrating ion. A combination of the 2 salts gave rise to antagonism and Fe was not absorbed so rapidly. Na oxalate, tannin, and hematoxylin behaved in much the same manner as Ca. When Ca was injected into a cell vacuole the cytoplasm immediately turned to a viscous gel. The gel was never observed when the root hairs were immersed in Ca solution. Evidently the plasma membrane is different from the cytoplasm.

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