- HûÊcker, V., 458
- Haddock, 774
- Haeckel, E., 199, 445, 454, 455, 457, 467, 480, 481
- Hair, pigmentation of, 430
- Hales, Stephen, 36, 59, 95, 669
- Haliotis, 514, 527, 546, 547, 554, 555, 557, 561
- Hall, C. E., 119
- Haller, A. von, 2, 54, 56, 59, 64, 68
- Hardesty, Irving, 37
- Hardy, W. B., 160, 162, 172, 187, 287
- Harlûˋ, N., 28
- Harmozones, 135
- Harpa, 526, 528, 559
- Harper, R. A., 283
- Harpinia, 746
- Harting, P., 282, 420, 426, 434
- Hartog, M., 163, 327
- Harvey, E. N. and H. W., 187
- Hatai, S., 132, 135
- Hatchett, C., 420
- Hatschek, B., 180
- Haughton, Rev. S., 334, 666
- Haû¥y, R. J., 720
- Hay, O. P., 707
- Haycraft, J. B., 211, 690
- Head, length of, 93
- Heart, growth of, 89; muscles of, 490
- Heath, Sir T., 511
- Hegel, G. W. F., 4
- Hegler, 680, 688
- Heidenhain, M., 170, 212
- Heilmann, Gerhard, 757, 768, 772
- Helicoid, 230; cyme, 502, 605
- Helicometer, 529
- Helicostyla, 557
- Heliolites, 326
- Heliozoa, 264, 460
- Helix, 528, 557
- Helmholtz, H. von, 2, 9, 25
- Henderson, W. P., 323
- Henslow, G., 636
- Heredity, 158, 286, 715
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