INDEX 



565 



Marx, Karl, his Communist mani- 

 festo, 446 

 on social evolution, 471 

 views on Socialism not those of 

 Mr. Kidd, 472 

 Maturation of egg- cell, 21 

 of germ-cells, 16, 19 

 and reducing division, 158, 

 159 

 Maudsley, Professor, on crimin- 

 ology, 382 

 Maupas on infusorians, 23, 24 



theory of, on amphimixis, 97 

 Menger, A., on the balance of 



power in society, 450 

 Merrifield, experiments of, 140 

 Metaphyta, 11 

 Metazoa, 11 



reproduction in, 13, 18 

 divided into reproductive and 

 somatic cells, 11 

 Method, value of, in struggle for 



existence, 155 

 Micro-organisms and variability, 3 

 Militarism, an obstacle to race pro- 

 gress, 323 

 MOl, J. S., and individualism, 428 

 on individual competition, 452, 



453 

 and individual liberty, 457 

 Montesquieu, his doctiine of indi- 

 vidualism, 452 

 Morality, supra-rational nature of, 

 485 

 subordinates the individual to 



an external power, 485 

 synonymous with supra-ration- 



alism, 534 

 an instrvmient for effecting 



adaptation, 543 

 correlation between decline of 

 religion and, 544 

 Mortality, comparative rates of, 342, 



843 

 Movement, implying expenditure of 



energy, 257, 258 

 MiiUer, Fritz, and biogenetic law, 



151 

 Multiplication, excessive, an essen- 

 tial feature of the struggle for 

 existence, 421 

 Mutations, 57 



in the plant world, 356 



Nageli and germ-plasm, 26 



on phyletic force, 131, 132 

 National character, 439 

 Natural selection, 9 



and traditional factors, 10 



if checked, would result in 



extinction of the species, 10 

 and organic variation, 49, 50 

 operates only when certain 

 variations become essential to 

 the species, 52 

 among nomadic races, 816, 

 318 

 Nature, how far we can ascribe an 

 aim to, 421, 424 

 the aim of, is mechanical, not 

 moral, 540 , 

 Nautili, evolution of, 153 

 Neumayer, and adaptability of 



species, 152 

 Nietzsche, ignored in England, 339 

 on our responsibility to future 



generations, 349, 350 

 and individualism, 428 

 his conception of art, 429 

 and egoism, 466 

 protest against the Socialist 



ideal, 477, 478 

 on religion and idealism, 501, 



502 

 ideaUst philosophy of, 515 

 Nihihsm, the result of economic 



development, 242, 286 

 Noctnuca, the result of conjugation 



of Protozoa, 19 

 Normal number of a species, defini- 

 tion of, 5 

 remains constant, 6 

 Normality, line of, in symmetrical 

 and asymmetrical frequency 

 curves, 101, 102, 103 

 and constancy, 106 

 Nourishment of organisms neces- 

 sary after energy, 258, 259 

 Nucleus, biogenetic value of, 18 

 its relation to polar bodies in 



reproduction, 19 

 contains the hereditary sub- 

 stance of germ-plasm, 28 



Oettingen, on insanity, 265 

 Organic and social deterioration, 

 549 



