CONTENTS
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POLAR EFFECTS OF ELECTRICAL CURRENT IN EXCITATION OF PLANTS
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Polar excitation in animal tissues—Anomalous reactions in Protozoa—Mono-polar method—Current Reverser—Excitatory polar action in plant—Method of record—Effects of ascending and descending currents in animal and plant—Records giving time-relations—Potential slide—Measurement of e.m.f. and current—Potential keyboard |
198 |
POLAR EFFECTS OF FEEBLE AND MODERATE CURRENTS ON VARIOUS SENSITIVE PLANTS
Polar effects of feeble and moderate currents on (1) leaflets of Mimosa, (2) leaflets of Biophytum, (3) leaflets of Neptunia, (4) leaflets of Averrhoa carambola, (5) leaflets of Averrhoa bilimbi, and (6) primary leaf of Mimosa—Excitation with feeble current only at kathode-make—Excitation at kathode-make and anode—break, under moderate current—Tabular statement of results |
212 |
THE CONTRASTED EFFECTS OF ANODE AND KATHODE
Polar effects of currents on pulsation of Desmodium gyrans—Reduction of systolic contraction by anodic action—Diminution of diastolic expansion by kathodic action—Arrest at systole by make of kathode and diastolic expansion by break of kathode—Arrest at diastole by make of anode, and systolic contraction by break of anode—Effects of ascending and descending currents of feeble and strong intensity in nerve-and-muscle preparation—Parallel effects in petiole-and-pulvinus |
234 |
EFFECT OF TEMPERATURE ON POLAR EXCITATION, AND MULTIPLE EXCITATION UNDER CONSTANT CURRENT
Excitability of nerve to induction-shock diminished by cooling—Nerve excitation by constant current enhanced by cooling—Excitation of conducting-tissue of Mimosa by constant current enhanced by cooling and depressed by warming—Ineffective stimulus becoming effective under cooling and vice
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