Index effect of colors in, 178; ego's corrective work in, 168-170; estimation of time in, 93; existence of, makes man's desires possible, 57; force and matter closely related in, 77; form blends into sound in, 95; head only perceptible in some regions of, 79; large population of, 77; seasons non-existent in, 93; second vehicle of earth, 55; time non-existent in, 92; universal mode of expression in, 85; vision pertaining to, 66; world of color, 68. Earth composed of three interpenetrating worlds, 55, 116; structure of dense body, obtained from, 57; training school of, 6, 43; worked upon, by the disembodied, 104. Earth lives, intervals between, 52. Earth spirits, fairies and elves, 70. Eastern Wisdom, unsuited to Western peoples, 14. Ego, see Spirit, threefold. Egyptians painted group spirits, 82. Electron, discovery of, 107. Elves, spirits of mountains, 70. Emotions, relation of, to desire body, 186.