Chemical Stimulation and the Evolution of Carbon Dioxid (Concluded)
1903; University of Chicago Press; Volume: 35; Issue: 3 Linguagem: Inglês
10.1086/328333
ISSN1940-1205
Autores Tópico(s)Marine and environmental studies
ResumoThe method has been perfected until the results are reliable to one-fiftieth of a milligram. No poison has been found not to act as a stimulant. Metallic salts drive CO2 from carbonates in the cell sap. This pseudo-respiration, under the action of strong poisons, is many times as active as the real respiration, and makes the study of the latter impossible. CO2 is given off from filtered sap squeezed from Elodea much more rapidly than from the Elodea before injury. The stimulation by K salts is greater than that by Na salts, in about the proportion of their relative toxicity. No constant difference was found between chlorids and nitrates. A considerable evolution of CO2 is a feature of the breaking down of "protoplasm" into mere "proteid," in death.
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