Frequently also a difference of hydration in the chemical substances on either side of an osmotic membrane will determine a chemical reaction, which like all other chemical reactions is accompanied by a corresponding transformation of energy.
"The Mechanism of Life"
Stéphane Leduc
This tincture should be made from the dried leaves to avoid hydration of the ether.
"The Medicinal Plants of the Philippines"
T. H. Pardo de Tavera
Unfortunately nearly all stimuli which produce growth are accompanied by hydration effects and it is difficult to feel that this is a specific vitamine effect although without denying the possibility.
"The Vitamine Manual"
Walter H. Eddy