INDEX 



393 



Paramecium (continued) 



isolating mechanism, 167 



killer strains, 179 



life cycle, 187 



macronuclear differentiation, 227 



sexual processes, 203 

 Paramecium aurelia, 162-236 



breeding system, 202, 206, 234 ff. 



characteristics, 197 



conjugation, 188 



cytoplasmic exchange, 224 



distribution of varieties, 169 



evolution of groups A and B, 226 



fission rate, 176 



geographical distribution, 231 



geographical variation, 216 



identification of varieties, 173 



immaturity, 190 



inheritance of mating types, 185 



karyotypes, 216 



killers, 234 



life cycle differences, 187 



mating types, 163 ff., 227 



maturity, 191 



morphological differences, 177 



mortality of intervarietal crosses, 

 172 



races, 235 



senility, 193 



serotypes, 180, 230 



taxonomic status of varieties, 195 



temperature range, 171 



temperature tolerance, 175 



varieties, 15, 16, 163 ff., 173, 315 



varieties as species, 199 

 Paramecium bursaria 



breeding system, 245 



characteristics of varieties, 243 



distribution of varieties, 243 



karyotypes, 244 



mating types, 241, 244, 250 



reproductive isolation, 242 



self-differentiation, 248 



speciation, 256 

 Paramecium calkinsi, 162, 276 

 Paramecium caudatum, 236-241 



breeding system, 239 



varieties, 236, 237 



Paramecium multimil innuclcatum, 



161, 163,314 

 Paramecium tricJuum, 162, 276 

 Parasites, 373 

 Parkinson, D., 142, 153 

 Parthenogenesis, 86 

 Pennak, R. W., 84, 122 

 Phenotype, 24, 360 



effect of temperature, 97 



plasticity of, 114 

 Phylogenetic tree, 130 

 Physiologist's viewpoint, 339-364 

 Physiology 



comparative, 287 

 Pinus muricata, 60 

 Pinus remorata, 60 

 Pittendrigh, C. H., 352, 367 

 Plant species, 39-77 

 Plate, L., 8, 21 

 Plato, 11 

 Polyploidy, 54 

 Populations 



competition between, 334 



local, 27, 31 



Mendelian, 26 



recombination in, 29 



size-frequencv distribution of fos- 

 sils, 141 



in space, 32 



in time, 32 

 Poulton, E. B., 2, 21 

 Preer, J. R., Jr., 179, 182, 322 

 Pringle, C. R., 182, 208, 210, 211, 



238, 322 

 Prosser, C. L., 386 

 Properties, 14 

 Protozoa, 155-315 



asexual, 280, 299 



reproductive methods, 155-315 



variety in, 160 ff. 



Races 



biological, 384 



osmotic, 350 



physiological, 347, 353 

 Bamsbottom, J., 3, 21 

 Rana, 328 ff. 

 Rana pipiens, 329, 355, 375, 378 



