- Hermann, F., 170
- Hero of Alexandria, 509
- Heron-Allen, E., 257, 415, 465
- Herpetomonas, 268
- Hertwig, O., 56, 114, 153, 199, 310; R., 170, 285
- Hertzog, R. O., 109
- Hess, W., 666, 668
- Heteronymous horns, 619
- Heterophyllia, 388
- Hexactinellids, 429, 452, 453
- Hexagonal symmetry, 319, 323, 471, 513
- Hickson, S. J., 424
- Hippopus, 561
- His, W., 55, 56, 74, 75
- Hobbes, Thomas, 159
- HûÑber, R., 1, 126, 130, 172
- Hodograph, 516
- Hoffmann, C., 628
- Hofmeister, F., 41; W., 87, 210, 234, 304, 306, 636, 639
- Holland, W. J., 707
- Holmes, O. W., 62, 737
- Holothuroid spicules, 440, 451
- Homonymous horns, 619
- Homoplasy, 251
- Hooke, Robert, 205
- Hop, growth of, 118; stem of, 627
- Horace, 44
- Hormones, 135
- Horns, 612
- Horse, 694, 701, 703, 764
- Houssay, F., 21
- Huber, P., 332
- Huia bird, 633
- Humboldt, A. von, 127
- Hume, David, 6
- Hunter, John, 667, 669, 713, 715
- Huxley, T. H., 423, 722, 752
- Hyacinth, 322, 394
- Hyalaea, 571ã577
- Hyalonema, 442
- Hyatt, A., 548
Table of Contents
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