. The dynamics of living matter . -B Fig. 31. — After Bancroft. A. Normal position of the cilia in a ParamcBciuni. B. Forced position of the cilia when the Paramceciufit is in a trough through which a constant galvanic current flows. The free ends of the cilia on the cathode side of the organism point in this case toward its oral pole. of the current at the anode, as Verworn had assumed, follows from observations made by Budgett and myself.* We found that in certain solutions, per cent NaCl solution, the Paramacia show a tendency to swim backward. When exposed to a galvanic current in
. The dynamics of living matter . -B Fig. 31. — After Bancroft. A. Normal position of the cilia in a ParamcBciuni. B. Forced position of the cilia when the Paramceciufit is in a trough through which a constant galvanic current flows. The free ends of the cilia on the cathode side of the organism point in this case toward its oral pole. of the current at the anode, as Verworn had assumed, follows from observations made by Budgett and myself.* We found that in certain solutions, per cent NaCl solution, the Paramacia show a tendency to swim backward. When exposed to a galvanic current in such a solution, they show a tendency to go to the anode. The explanation is that in such an organism the cilia are pointed forward under the influence of the solution. Bancroft found that when the current goes crosswise through such a Paramecium, the cilia on the cathode side continue to point forward while those on the anode side assume their natural position, pointing backward. The animal is thus turned with its oral pole toward the cathode. As soon as this * Loeb and Budgett, Pfluger's Archiv, Vol. 65, p. 518, 1897.
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