INDEX

Plœtz, A., 118 , 119 , 408 , 409 , 410 Plymouth, England, 118 Poisons, racial, 48 , 61 , 63 , Fig. 7 Poles, 259 , 299 , 427 Polygamy, 387 Polynesians, 127 , 129 Pope, E. G., 124 Popenoe, C. H., 78 Popenoe, P., vi, 244 , 245 , 270 , 402 , 423 Population, Malthusian, 151 Portland, Ore., 261 Portuguese, 299 , 302 Possible improvement of the human breed, etc., 152 Poulton, E. B., 43 Powys, A. O., 272 , 346 Pragmatic school, 352 Preferential mating, 214 Pre-natal care, 70 Pre-natal culture, 70 Pre-natal influence, 64