INDEX 317 



Madelung, Erwin 75 



Mall, F. P 190 



Mameli 53 



Man and apes, blood-relationship between 200 



dissimilarities between 202 



similarities between 264 



Man's descent 199-202, 243, 244 



erect posture, cause of 188, 189 



lengthened infancy, cause of 185-188 



Mass 75 



and energy 75, 291 



Matter 105 



a condition 75 



amount of, in existence 79, 80 



analysis of 254 



and electricity, unity of 74 



changed concept of 74 



difference between living and non-living 173, 175, 176 



living, the Gaskell law of the structure of 154, 155, 162, 163 



restriction of term 74, 75, 78 



Maupertuis, P. L. M. de 165 



Maxwell, J. Clerk 290 



Mayo, Marion J 191, 192 



McClendon, J. F 185 



Meltzer 58 



Mendel, Gregor Johann. 33, 211, 229 



Mendeleeff, Dmitri Ivanovich, 28, 141 



Mendelsohn, Martin 52 



Metabolism 294 



Metamorphosis, induced 101 



Metals 108 



Metchnikoff, Elie 283 



Methods, quantitative 31-34 



Mettrie, Julien de la 252 



Michaelis, Leonor 281 



Michelson, Albert A 303 



Miethe, Adolf 86 



Mill, John Stuart 25, 26 



MiUikan, Robert Andrews 30, 31, 32, 70, 84, 85, 87, 93, 97, 103, 



119, 130, 260, 268, 291, 299, 304 



Minchin, E. A 217 



Minkowski, H 29 



Mohl, von 247, 269, 298 



