- Earthworm, calcospheres in, 423
- Earwigs, dimorphism in, 104
- Ebner, V. von, 444, 683
- Echinoderms, larval, 392; spicules of, 449
- Echinus, 377, 378, 664
- Eclipse, skeleton of, 739
- Ectosarc, 281
- Eel, growth of, 85
- Efficiency, mechanical, 670
- Efficient cause, 6, 158, 248
- Eggs of birds, 652
- Eiffel tower, 20
- Eight cells, grouping of, 381, etc.
- Eimer, Th., 606
- Einstein formula, 47
- Elastic curve, 219, 265, 271
- Elaters, 489
- Electrical convection, 187; stimulation of growth, 153
- Elephant, 21, 633, 703, 704
- Elk, antlers of, 629, 632
- Ellipsolithes, 728
- Ellis, R. Leslie, 4, 329, 647; M. M., 147, 656
- Elodea, 322
- Emarginula, 556
- Emmel, V. E., 149
- Empedocles, 8
- Emperor Moth, 431
Table of Contents
INDEX.
827