Note 24 — Chapter III · ORGANISM, ORGANIZATION, AND ORGANIC SUBSTANCE.

In turning over the pages of a work which was celebrated some half-century ago—Rudolphi’s Grundriss der Physiologie—I was interested to find a clear recognition of this biological principle: “Alle Theile aller Organismen,” he says, I. 233, “sie mögen noch so verschieden in ihrem Bau, in ihrer Mischung, und in ihrer Thätigkeit seyn, sind ohne Ausnahme als organisch und mithin als lebend zu betrachten.” In a note he adds that physiologists have considered certain solid parts—epidermis, nail, hair, and bones—to be dead; “but all these are organically developed, and are in direct connection with the other parts.”