Chapter XII: Protoplasm the Physical Basis of Life, 259

Great influence of the protoplasm doctrine on biological
progress, 259. Protoplasm, 259. Its properties as discovered
by examination of the amoeba, 260. Microscopic examination of
a transparent leaf, 261. Unceasing activity of its protoplasm,
261. The wonderful energies of protoplasm, 261. Quotation from
Huxley, 262. The discovery of protoplasm and the essential steps
in recognizing the part it plays in living beings, 262-275.
Dujardin, 262. His personality, 263. Education, 263. His
contributions to science, 264. His discovery of "sarcode" in the
simplest animals, in 1835, 266. Purkinje, in 1840, uses the term
protoplasma, 267. Von Mohl, in 1846, brings the designation
protoplasm into general use, 268. Cohn, in 1850, maintains the
identity of sarcode and protoplasm, 270. Work of De Bary and
Virchow, 272. Max Schultze, in 1861, shows that there is a broad
likeness between the protoplasm of animals and plants, and
establishes the protoplasm doctrine. The university life of Schultze.
His love of music and science. Founds a famous biological periodical,
272-274. The period from 1840 to 1860 an important one for biology,
274.