Slavery, as a wrong, i. 432.
Sleep, necessity of, ii. 337, 428, 462, 463, 466;
action of vital force in, ii. 463, 466;
positive character of, ii. 464;
relation to brain life, ii. 465;
relation to death, i. 358, iii. [267] seq.
Socialists, iii. [250].
Socrates, i. 288, 343, ii. 107, 281, 363, iii. [299], [249], [252], [405].
Somnambulism, ii. 467, iii. [98] seq.
Sömmering, iii. [21].