Ideas, confused association of. Question whether our, are derived exclusively from sensation or whether they spring in part from the mind itself, 122.

The latter theory represented by the Platonic doctrine of pre-existence, 122.

Doctrine of innate ideas, 122

Idols and idolatry, views of the Roman philosophers of, i. 166.

Discussion between Apollonius of Tyana and an Egyptian priest respecting, 166, note.

Idols forbidden by Numa, 166, note.

Plutarch on the vanity of, 166, note

Ignatius, St., his martyrdom, i. 438

Ignis fatuus, legend of the, ii. [224], note

Imagination, sins of, i. 44.