John Tyndall,
Popular Science Monthly
(1875)
“ I have glanced at inorganic Nature—at the sea, and the sun, and the vapor, and the snow-flake—and at organic Nature as represented by the fern and the oak. That same sun which warmed the water and liberated the vapor, exerts a subtiler power on the nutriment of the tree. It takes hold of matter wholly unfit for the purposes of nutrition, separates its nutritive from its non-nutritive portions, gives the former to the vegetable, and carries the others away. ”
