Enthusiasm, [169-71]; religious, [305-08].

Environment, control of by science, [64]; influence of on æsthetic appreciation, [105], [361]; on individual differences, [193], [206-09]; on racial differences, [199]; on instincts, [20-26]; maladjustment between individual and, [25]; possibility of choice of, [207-09].

Ethics, and life, [454-55]; contrast between professed and practiced, [100-01]. See also Morality.

Euripedes, [123], [180], [306], [356].

Evolution, [317-20].

Experience, art as vicarious, [94-95]; [356-58]; modifies man's instincts, [27].

Experiment, to determine learning process in animals, [8]; number of instincts in animals, [4]; in children, [5].

Experimental moral standards, [447-48], [453].

Experimentation in science, [399-401].

Expression, art as means of, [351-56]. See also Æsthetic, and Religion.