The temperature characteristics (µ) for two activities (heart beat and respiratory movements) studied simultaneously in the same individual organism (Daphnia magna) were always found to differ in magnitude. The type of graph obtained when the frequency of these movements was plotted according to the Arrhenius equation was also distinctly different for each activity. The organism therefore does not determine a uniform magnitude of the temperature characteristic for each of its activities; the values of µ must therefore have, to this extent, a local, specific meaning.
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Copyright, 1932, by The Rockefeller Institute for Medical Research
1932
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