INDEX.

Naber, H. A., 511, 650
NûÊgeli, C., 124, 159, 210
Nassellaria, 472
Natica, 554, 557, 559
Natural selection, 4, 58, 137, 456, 586, 609, 651, 653
Naumann, C. F., 529, 531, 539, 550, 577, 594, 636; J. F., 653
Nautilus, 355, 494, 501, 515, 518, 532, 535, 546, 552, 557, 575, 577, 580, 592, 633; hood of, 554; kidney of, 425; N. umbilicatus, 542, 547, 554
Nebenkern, 285
Neottia, pollen of, 396
Nereis, egg of, 342, 378, 453
Nerita, 522, 555
Neumayr, M., 608
Neutral zone, 674, 676, 686
Newton, 1, 6, 158, 643, 721
Nicholson, H. A., 325, 327
Noctiluca, 246
Nodoid, 218, 223
Nodosaria, 262, 535, 604
Norman, A. M., 465
Norris, Richard, 272
Nostoc, 300, 313
Notosuchus, 753
Nuclear spindle, 170; structure, 166
Nummulites, 504, 552, 591
Nussbaum, M., 198

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