Eleatics: their doctrine, 4. Empedocles: his doctrine, 4; a pluralist, 205. Empiricism: the doctrine, 209-211; Kant on, 212; critical empiricism, 218-219. Energy: conservation of, 151-154. Epicureans: their view of philosophy, 7-8; their materialism, 102. Epiphenomenon: the mind as, 162. Epistemology: its place among the philosophical sciences, 247-249. Ethics: and the mechanism of nature, 159-164; common sense ethics, 236-240; Whewell criticised, 238-240; philosophy and, 240-242; utility of, 265-267; references, 315. Evidence: in philosophy, 296-298. Existence: of material things, 56-58; also, 165-192. Experience: suggestions of the word, 58; Hume's doctrine of what it yields, 170-171; Descartes and Locke, 178; Kant's view of, 179; empiricism, 209-211; critical empiricism, 218-219. Experimental Psychology: its scope, 234-235. Explanation: of relation of mind and body, 125-126. External World: its existence, 32 ff.; plain man's knowledge of, 32-36; psychologist's attitude, 36-38; the "telephone exchange," 38-44; what the external world is, 45-58; its existence discussed, 56-58; a mechanism, 147-150; knowledge of, theories, 165-180; Descartes on, 207-208; psychologist's attitude discussed, 230-234. Falckenberg: 311, 316. Fate: 158; literature on fatalism, 309-310. Fichte: on philosophic method, 10; solipsistic utterances, 133. Final Cause: what, 161. "Form" and "Matter": the distinction between, 82-83; space as "form," 82-84; time as "form," 94; Kant's doctrine of "forms," 179; the same criticised, 216-217. Free-will: and the order of nature, 154-159; determinism and "free-will-ism," 155-159; literature referred to, 309-310. God: revealed in the world, 163-164; Berkeley on argument for, 190-191; Spinoza on God or substance, 199; Descartes' argument for, 208; influence of belief on ethics, 241; conceptions of, 252-253; relation to the world, 253-254; monistic conception of, 312; references, 314. Greek Philosophy: Pre-Socratic characterized, 2-5; conception of philosophy from Sophists to Aristotle, 5-7; the Stoics, Epicureans, and Skeptics, 7-8. Green, T. H.: 218, 315.