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We call this catalysis, catalytic action, the action of presence, or by what learned name we choose. Give what name to it we will, it is a manifestation of power which crosses our established laws of combination at a very open angle of intersection.
The material he had used as a catalytic agent was a new substance which he had read of in a scientific review, and he had purchased a small quantity of it in London.
Even the catalytic properties of ferments are above the “ordinary” physical and chemical forces. The movement of crystallisation, too, cannot be compared with the vital movement. For vital force is not immanent in matter, but is always the product of previous life. In the simplest processes of growth and nutrition the vis vitalis plays its vital rôle.
I must return to this subject in connection with the respiratory function. The sugar-making faculty of the liver is another "catalytic" mystery, as great as the rest of them, and no greater. Liver-tissue brings sugar out of the blood, or out of its own substance; why? Quia est in eo Virtus saccharitiva.
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