Absolute, The: Spencer's doctrine of, 70;
    Bradley's, 191-192;
    meanings of the word, 201;
    reference, 312.
  Activity and Passivity: meaning of, 159-161;
    confused with cause and effect, 159-161;
    activity of mind, 162-163.
  Aesthetics: a philosophical discipline, 242-243.
  Agnosticism: 202.
  Aikins: 314.
  Albert the Great: scope of his labors, 9.
  Analytical Judgments: defined, 178.
  Anaxagoras: his doctrine, 4; on the soul, 101.
  Anaximander: his doctrine, 3.
  Anaximenes: his doctrine, 3; on the soul, 101.
  Appearances: doubt of their objectivity, 35;
    realities and, 59 ff.;
    apparent and real space, 80-87;
    apparent and real time, 93-99;
    apparent and real extension, 113;
    measurement of apparent time, 128;
    appearance and reality, Bradley's doctrine, 191-192.
  Aristotle: reference to Thales, 3;
    scope of his philosophy, 7;
    authority in the Middle Ages, 9;
    on the soul, 102-103.
  Arithmetic: compared with logic, 225-226.
  Atoms: nature of our knowledge of, 22-23; also, 65-67;
    doctrine of Democritus, 194-195.
  Augustine: on time as past, present, and future, 90 ff.;
    on soul and body, 104;
    as scientist and as philosopher, 278.
  Authority: in philosophy, 291-296.
  Automatism: the automaton theory, 129-130;
    animal automatism, 141-142;
    activity of mind and automatism, 162;
    references, 308-309.
  Automaton: see Automatism.

  Bacon, Francis: his conception of philosophy, 10.
  Baldwin: on psychology and metaphysics, 314.
  Berkeley: referred to, 56;
    on appearance and reality, 61-63;
    his idealism, 168-170;
    his theism, 190-191;
    references to his works, 310.
  Body and Mind: see Mind and Body.
  Bosanquet: his logic, 235.
  Bradley: his "Absolute," 191-192; reference given, 311.
  Breath: mind conceived to be, 101.

  Cassiodorus: on soul and body, 103-104.
  Cause and Effect; meaning of words, 118-120;
    relation of mental and material not causal, 121-126;
      see also, 132;
    cause and effect, activity and passivity, 159 ff.
  Child: its knowledge of the world, 18-19.
  Cicero: Pythagoras' use of word "philosopher," 2; on immortality, 32.
  Clifford, W. K.: on infinite divisibility of space, 79-80;
    on other minds, 135;
    on mind-stuff, 144-146;
    his panpsychism, 197-198;
    his parallelism, 308-309;
    references on mind-stuff, 309.
  Common Sense: notions of mind and body, 106 ff.;
    Reid's doctrine, 171-174;
    common sense ethics, 236-240.
  Common Thought: what it is, 18-20.
  Concomitance: see Mind and Body.
  Copernican System: 282.
  Cornelius: on metaphysics, 249.
  Creighton: 314.
  Critical Empiricism: the doctrine, 218-219.
  Critical Philosophy: outlined, 175-180;
    criticised, 211-218;
    references, 311.
  Croesus: 1.

  Democritus: doctrine referred to, 4;
    his place in the history of philosophy, 5;
    on the soul, 101-102;
    his materialism examined, 194-195.
  Descartes: conception of philosophy, 10;
    on mind and body, 105-106; also, 119;
    on animal automatism, 141-142;
    on the external world, 163-168;
    on substance, 198;
    his rationalism, 206-209;
    the "natural light," 208;
    his attempt at a critical philosophy, 214;
    his rules of method, 214;
    provisional rules of life, 301-302;
    reference given, 306;
    reference to his automatism, 308;
    references to the "Meditations," 312.
  Determinism: 155-159; references, 309-310.
  Dewey, John: 312-314.
  Dogmatism: Kant's use of term, 211-212.
  Dualism: what, 193;
    varieties of, 202-204;
    the present volume dualistic, 204;
    Hamilton's, 312.

  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.

  Hamilton, Sir W.: on space, 76;
    on the external world, 174; also, 182;
    reference, 311;
    his dualism, 312;
    on utility of philosophy, 316.
  Hegel: his conception of philosophy, 11;
    an objective idealist, 190.
  Heraclitus: his doctrine, 4; on the soul, 101.
  Herodotus: 1-2.
  History of Philosophy: much studied, 273-274;
    its importance, 274-281;
    how to read it, 281-287;
    references, 316.
  Hobhouse: on theory of knowledge, 248; reference, 312.
  H?ffding: his monism, 200-201; his history of philosophy, 311.
  Howison: on pluralism, 205.
  Humanism: 312-313.
  Hume: his doctrine, 170-171;
    use of word "impression," 177;
    influence on Kant, 177-178.
  Huxley: on other minds, 135, 138; on automatism, 308.
  Hypothetical Realism: see Realism.

  Idealism: in Berkeley and Hume, 168-171;
    general discussion of the varieties of, 187-192;
    proper attitude toward, 289-291.
  Ideas: distinguished from things, 33-36;
    in psychology, 36-38;
    Berkeley's use of the word, 168-170;
    Hume's use of the word, 177.
  Imagination: contrasted with sense, 45-49;
    extension of imagined things, 113.
  Immateriality: of mind, see Plotinus, and Mind.
  Impression: Hume's use of word, 177.
  Infinity: infinity and infinite divisibility of space, 73-80;
    of time, 88-90; also, 95-97;
    mathematics and, 226.
  Inside: meaning of word, 55.
  Interactionism: see Mind and Body.
  Intuitionalists; defined, 240.
  Ionian School: 3.

  James, W.: on pragmatism, 220-222 and 312-313;
    on psychology and metaphysics, 230-231;
    on interactionism, reference, 308;
    on "free-will," 309-310.
  Jevons: his logic, 224; on study of scientific method, 256.
  Jodl: 315.

  Kant: on space, 75;
    his critical philosophy, 175-180;
    his philosophy criticised, 211-218;
    references to, 307, 311.
  Keynes: 314.

  Localisation: of sensations, what, 127.
  Locke, John: on doubt of external world, 32;
    on substance, 108;
    on perception of external world, 166-168;
    his empiricism, 209-210;
    his attempt at a critical philosophy, 215-216;
    on innate moral principles, 240;
    reference to "Essay," 310;
    his hypothetical realism, 311;
    treatment of substance, references, 312.
  Logic; the traditional, 224;
    "modern" logic, 224-225;
    Jevons and Bosanquet referred to, 224-225;
    philosophy and, 225-229;
    compared with arithmetic, 225-227;
    deeper problems of, 227;
    Spencer cited, 228;
    utility of, 264-265;
    references, 314.
  Lucretius: his materialistic psychology, 102.

  Mach: 14.
  Mackenzie: 315.
  Malebranche: referred to, 142.
  Martineau: 315.
  Materialism: primitive man's notion of mind, 100-101;
    materialism in the Greek philosophy, 101-102;
    refutation of, 111-132;
    general account of, 194-197.
  Mathematics: nature of mathematical knowledge, 23-25;
    arithmetic compared with logic, 225-226;
    mathematical relations and cause and effect, 257;
    mathematical methods, 256-257.
  Matter: what is meant by material things, 51-58;
    the material world a mechanism, 147-150.
  "Matter" and "Form": see "Form" and "Matter."
  McCosh: on mind and body, 120.
  Mechanism: the material world a, 147-150;
    objections to the doctrine, 148-150;
    mind and mechanism, 151-154;
    mechanism and morals, 159-164;
    mechanism and teleology, reference, 310.
  Metaphysician: on the mind, 111 ff.
  Metaphysics: psychology and, 230-234;
    distinguished from philosophy, 244-245;
    uncertainty of, 247;
    utility of, 269-272;
    traditional divisions of, 315.
  Method: scientific method, 256-259.
  Middle Ages: view of philosophy in, 8-9.
  Mill, J. S.: the argument for other minds, 136-138;
    on permanent possibilities of sensation, 289;
    his logic, 314.
  Mind: the child's notion of, 100;
    regarded as breath, 101;
    suggestions of Latin, Greek, and Hebrew words for mind or
      soul, 101;
    materialistic views of, in Greek philosophy, 101-102;
    Plato and Aristotle on nature of, 102-103;
    doctrine of Plotinus, 103;
    of Cassiodorus, 103;
    of Augustine, 104;
    of Descartes, 105-106;
    modern common sense notions of mind, 106-110;
    mind as substance, Locke quoted, 108-109;
    psychologist's notion of, 110-111;
    what the mind is, 111-114;
    place of mind in nature, 151-154;
    minds active, 162-163;
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