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655 objects for an identical object, as also does the resemblance between the act of mind in contemplating a succession, and the act of mind in contemplating an identical object, 204.

Constant Conjunction—v. Cause.

Contiguity—a relation essential to the idea of causation, 75; an impression enlivens an idea to which it is related by contiguity, 100, 110; not a source of belief as causation is, 107; a relation in 'nature,' independent of and antecedent to the operations of the understanding, 168; associates ideas, but not impressions, 283.

Its influence on the imagination or fancy, 109; leads to violation of laws of justice and necessitates government, 535; contiguity between cause and object of pride is necessary to produce pride, 304; when united with causation and resemblance produces sympathy, 318, 320; its influence on the passions, 417 f.

Contrariety—a source of relation, 15; one of the four demonstrable relations, and perceived by intuition, 70, 464.

Only obtains between existence and non-existence, 173; no real objects are contrary, 247; pride and humility directly contrary, and annihilate one another, 378: also love and hatred, 330; contrariety of passions results (a) in alternation; (b) mutual destruction; (c) mixture, 441.

In experience produces probability, 131; clue to secret operation of contrary causes, 131, 404.

Convention—to bestow stability on possessions, 489; not a promise, only a general sense of common interest, which sense all the members of the society express to one another,' like that of two men rowing the same boat, 490; convention without promise the source of language, 490; a promise unintelligible before human conventions, 516; convention creates a new motive in the case of a promise, 51:; a source of natural as well as civil justice, 543.

Cooperation—increases man's power, 485.

Copernicus—natural philosophy before, 282.

Courage—duty of largely enforced by artifice, 573.

Cruelty—detestable, 605.

Curiosity—pleases because it produces belief, and removes uneasiness of doubt, 453.

Custom.

§ 1. 'We call everything custom which proceeds from a past repetition without any new reasoning or conclusion'; it operates before we have time for reflection, and is 'a secret operation,' 104.

§ 2. The source of the general representativeness of abstract ideas. 20.

§ 3. (v. Cause, § 7) determines us to pass &om the impression of one object to the idea or belief of another, 97, 170; produced by