DFE
- Eagle, sclerotic plates of, [437]
- Ear, [263]
- Earthworm, respiration in, [4], [24];
- regeneration of lost parts, [41];
- sensitive to light, [293];
- outward projection in, [359]
- Eaton, Rev. A. E., on insects of Kerguelen Island, [81]
- Ecitons, [427]
- Economy, principle of, [194]
- Education of ants, [428];
- Egg and hen, problem of, [130]
- Egg-cell and sperm-cell, diagram of, [13];
- conditions which determine production of, [60]
- Eggs, influence of food-yolk on mode of development of, [56];
- destruction of birds, [189]
- Ego, or self, [475]
- Eimer, Prof., on inhabitants of Nile valley, [165];
- on Helix hortensis, [226];
- on instinct, [436];
- on differential dread in birds, [444]
- Eject, meaning of, [476]
- Elaboration, [183]
- Elephant, rate of increase of, [57];
- Elimination, as opposed to selection, [79];
- its three modes, [80];
- as a factor in the origin of instinct, [447];
- of ideas through incongruity, [486];
- as applied to the intellectual faculties, [497]
- Embryology negatives preformation, [50]
- Emotions exemplified, [382];
- Encystment, [38], [49]
- Ends and means, [371]
- Energy, relations of animals and plants to, [16]
- Ennomos tiliaria, caterpillar, protective resemblance of, [85]
- Environment, direct effects of on the organism, [163];
- changes of, in relation to the organism, [183];
- are effects of direct or indirect? [233];
- instances of effects of, [238]
- Equus, [118]
- Eristalis tenax, [87]
- Ethics in animals, [413]
- Euplæa, [203]
- Evolution of older writers, [50];
- Excrement of birds, resemblance of spider to, [90]
- Excretion, an essential life-process, [3], [29]
- Expectation, [327]
- Experience dependent on memory, [305]
- Expression of the emotions, [385]
- Eye, structure of in man, [274];