. Contributions from the Botanical Laboratory, vol. 7. Botany; Botany. (\) a) of these cations are given for comparison with the toxic equiva- lence. The atomic weight is a most important constant that runs through all chemistry. The relative speed of the cations as determined by Kohlrausch is indicated showing the rates at which they migrate through aqueous solutions toward their proper electrodes. The number of electric charges on a given ion corresponds with the number of H ions it can replace, i in case of most of the ions we have so far studied and represents the quantity
. Contributions from the Botanical Laboratory, vol. 7. Botany; Botany. (\) a) of these cations are given for comparison with the toxic equiva- lence. The atomic weight is a most important constant that runs through all chemistry. The relative speed of the cations as determined by Kohlrausch is indicated showing the rates at which they migrate through aqueous solutions toward their proper electrodes. The number of electric charges on a given ion corresponds with the number of H ions it can replace, i in case of most of the ions we have so far studied and represents the quantity factor of an ion in doing chemical work. The tendency of the ion to give up its charge or the eagerness to combine represents its intensity factor, its solution tension. Ions, having a like electric charge or capacity factor, do not then necessarily act alike in view of the inequality of their ion voltage, expressed as solution tension. Although solution tensions are differently indicated by different investigators, I have here used the values given by Mc Clendon in his ''Physi- cal Chemistry of \'ital ; The toxic equivalents given have been determined by a number of us. Since in all cases the numerator is i, the toxicity is measured by the denominator only which indicates the number of liters of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original University of Pennsylvania. Botanical Laboratory. Philadelphia : University of Pennsylvania Press
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