lity, degrees of, 216, 217.

James, William, 254.

Kant, Immanuel, quoted, 221.

Kelvin, Lord, 83.

King, Starr, 244.

Lankester, Sir Edwin Ray, quoted, 128, 141;
his "plasmogen," 145, 146.

Le Dantec, Felix Alexandre, his "Nature and Origin of Life," 73, 79, 80;
on consciousness, 80;
on the artificial production of the cell, 83;
on the mechanism of the body, 224.

Leduc, Stephane, his "osmotic growths," 167, 168.

Liebig, Baron Justus von, quoted, 83.

Life, may be a mode of motion, 5;
evolution of, 6;
its action on matter, 8, 9;
its physico-chemical origin, 9;
its appearance viewed as accidental, 10-14;
Bergson's view, 14-17, 27-29;
Sir Oliver Lodge's view, 17, 18;
and energy, 17-23;
theories as to its origin, 24-27;
Tyndall's view, 28-30;
Verworn's view, 30, 31;
the vitalistic view, 32-38;
matter as affected by, 39;
not to be treated mathematically, 40;
a slow explosion, 41, 42;
an insoluble mystery, 43, 44;
relations with the psychic and the inorganic, 44, 45;
compared with fire, 54, 55;
the final mystery of, 69, 70;
vitalistic and mechanistic views, 71-114;
Benjamin Moore's view, 106-113;
the theory of derivation from other spheres, 104;
spontaneous generation, 105;
plays a small part in the cosmic scheme, 115-119;
mystery of, 120;
nature merciless towards, 120-124;
as an entity, 124-130;
evanescent character, 131, 132;
Prof. Schaefer's view, 133-138;
intelligence the characteristic of, 134, 139, 151-154;
power of adaptation, 147-149;
versatility, 155, 156;
the fields of science and philosophy in dealing with, 161-166, 173-176;
simulation of, 167, 168;
and protoplasm, 169;
and the cell, 170;
variability, 171, 172;
the biogenetic law, 174;
relation to energy, 177-183;
an _x_-entity, 181, 182;
struggle with environment, 185, 186;
as a chemical phenomenon, 187;
inadequacy of the mechanistic view, 212-243;
degrees of, 216, 217;
arises, not comes, 230;
a metaphysical problem, 231;
as a wave, 231;
its adaptability, 253;
a vitalistic view, 254-289;
naturalness of, 263-268;
advent and disappearance, 268, 269;
the unscientific view, 274, 275;
analogy with the question of perpetual motion, 277, 278;
no great gulf between animate and inanimate, 285;
a cosmic view, 289.
_See also_ Living thing, Vital force, Vitalism, Vitality.

Light, measuring its speed, 60.

L