838 



Index 



Monkey-flower, 725 

 Monocotyledons 

 ancestry of, 15 

 regression in, 630 

 Monotropa, 222, 661 

 Morphologic units, 145, 153 

 Monstrosities, 818 

 Morgan 



on mutation-theory, 9 

 Morren, 244, 763 

 Mountain-ash, 342 

 Miiller, Fritz, 775, 776, 780 

 Multiplication, vegetative (see 



Asexual propagation). 

 Munting, Abraham, 164, 165, 



490, 762 



Munting's drawings, 512 

 Murr, 158, 236 

 Muscari comosum, 134 

 Museum d'Histoire Naturelle, 



Paris, 522 



Mutability vs. fluctuating va- 

 riability, 568 

 Mutation, 659, 674, 677, 685, 



686, 694, 713, 716, 825 

 absence of intermediate 



steps in, 474, 480 

 conditions for observing, 



601 



decided within the seed, 28 

 definition of, 7 

 easily observed, 30 

 experimental, 688 

 few observations of, 8 

 fluctuation vs., 7, 16, 719 

 influence of on variability, 



335 

 iterative nature of, 476, 



703 

 laws of, 556, 558, 560, 562, 



564, 566, 568, 570 

 limited in time, 29 

 observation of, 16 

 in Oenothera, 521, 525, 690 

 oldest known, 609 

 oldest recorded, 22 

 periodic, 690, 692, 694 

 perodicity of, 519 

 progressive, 307 

 repetition of, 476 



in Saponaria caldbrica, 612 



simultaneous, 614 



in tomato, 655 



Mutations, 141, 275, 280, 445, 

 449, 573, 608, 620, 626, 

 678, 685, 686, 701, 704, 

 712, 713, 716, 800 



artificial, 402 



chance for useful, 598 



defined, 191 



frequency of, 597 



in garden-flowers, 488 



in horticulture, 604, 706 



latent, 703 



mode of appearance, 517 



numerical proportion of, 

 475 



original production of, 703 



peloric, 707 



periodic, 686, 705 



progressive, 704 



retrograde, 704 



stray, 704, 705, 706 



synonyms of, 191 

 Mutation-period, 714 

 Myosotis azorica, 368 

 Myrtus communis, 684 



N 



Nageli, 60, 439, 443, 448, 795 



Nagelian principle, 448, 450, 

 451 



Natural selection, 18, 119, 

 120, 445, 456, 682, 694, 

 703, 743, 744, 798-826 

 basis, 604 

 nature of, 6, 19 



Naudin, 118 



Nectarines, 137, 138, 226, 627 



Ne"mec, 578 



Neo-Lamarckians 

 principle of, 8 



Neo-Lamarckism 447 



Nepenthes, 671, 672, 673, 674 



Newton, 1, 732, 767 



Nicandra, 152 



Nigella, 134 



Nightshade, 298 

 black, 282 



