This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 Excerpt: ...action will not be sufficiently great to arrest maximal excitation. (iii) After a still longer interval, the depression of conductivity induced by poison will be very great. Even a maximal excitation will now be practically arrested. (iv) This arrest will be due to the abolition of conductivity in the localised ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 Excerpt: ...action will not be sufficiently great to arrest maximal excitation. (iii) After a still longer interval, the depression of conductivity induced by poison will be very great. Even a maximal excitation will now be practically arrested. (iv) This arrest will be due to the abolition of conductivity in the localised poisoned zone. The conductivity of the petiole beyond the poisoned area, and the motile excitability of the leaflets will remain unaffected. I shall now describe experiments on the effect of poison on conductivity. The experiment was repeated with twelve different specimens of Biophytum, all of which gave similar results. The following experiment may be taken as representative of the rest. Among the whorl of leaves in the particular specimen of Biophytum there were six which were fairly sensitive. The additive effect of four successive thermal shocks applied on the stem was found to be sufficient to cause excitatory fall of the leaflets in all the six leaves. Two out of the six leaves were subjected to the local action of poison in the manner previously described: --(i) The testing stimulus was applied 15 minutes after the application of poison. Excitatory impulse was found to traverse all the leaves. Absorption of the particular poison in the course of 15 minutes was too slight to induce any marked depression of conductivity. (2) The experiment was repeated after half an hour under the same stimulus as before--namely, the additive effect of four shocks. The excitatory impulse was found transmitted in the four normal, but arrested in the two poisoned leaves. The block in the two leaves was, however, forced by the application of a stronger stimulus due to the additive effect of six shocks. (3) After two hours the conductivity of the poisoned portion of..
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Add this copy of Researches on Irritability of Plants to cart. $35.54, new condition, Sold by Books2anywhere rated 5.0 out of 5 stars, ships from Fairford, GLOUCESTERSHIRE, UNITED KINGDOM, published 2022 by LEGARE STREET PR.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Add this copy of Researches on Irritability of Plants to cart. $37.39, new condition, Sold by Paperbackshop International rated 5.0 out of 5 stars, ships from Fairford, GLOS, UNITED KINGDOM, published 2022 by LEGARE STREET PR.
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