Index 



233 



Palaeontology, 69, 215 

 Paramecium, 22, 25, 29, 31, 34, 46, 



50, 56, 58, 63, 68, 9T, 110, 119, 



130, 133, 142, 143, 154, 158, 165, 



181, 191 



Parthenogenesis, 64 

 Pearl, 68, 203 

 Pelomyxa, 183 

 Plant lice, 64 

 Pneumonia bacillus, 90 

 Popoff, 180 

 Potassium bichromate, effects of, 



89 



Potato beetle, 202 

 Powers and Mitchell, 58 

 Prandtl, 133, 177 

 Primary hereditary characters, 170, 



185-187, 222 

 Pringsheim, 95 

 Protozoa, 15 

 Prowazek, 183 

 Pure line, 65 

 Purpose, 106 



Quehl, 93 



Radl, 13 



Rate of reproduction, 24, 81, 141- 



147, 154, 158, 161 

 Reduction, 172, 175-186 

 Reeves, 207 

 Rejuvenescence, 23, 26, 36, 114, 



141-147, 150, 162, 220 

 Reproduction, rate of, 24, 81, 141- 



147, 154, 158, 161 

 Reserve nucleus, 25 

 Resistance, 57, 101 

 Root, 56, 77 



Saltation, 205 



Schaudinn, 183 



Secondary hereditary characters, 



185 



Selection, 60-73, 81 

 Senility, 30 



Sex, 109, 114-140, 168, 219 

 Size of nuclei, 82 

 Spirogyra, 135 

 Spirostomum, 150 



Stand fuss, 202 

 Stentor, 16 

 Stephanosphaera, 126 

 Stockard, 203 

 Structure of Protozoa, 15 

 Sturtevant, 207, 208 

 Stylonychia, 16, 28, 32, 43, 81, 100, 

 145, 150 



Temperature, acclimatization to, 



98-100 



Tetramitus, 98 

 Toenniessen, 90 

 Tower, 202 

 Trichomastix, 134 

 Trophic, 116 

 Trophonucleus, 116 

 Trophoplasm, 116 

 Trypanosoma, 96, 183 

 Twins, 60 



Unicellular organisms, 15, 16 

 Uniparental inheritance, 38-84 

 Uniparental reproduction, 21 

 Unit factor, 208 



Uroleptus, 32, 142, 144, 149, 151, 

 163 



Vacuoles, contractile, 58 

 Variation, 50, 61, 66, 67-72, 76, 193 

 Vitality, 24, 141-147, 161, 196 

 Vries, de, 205, 212 

 Vorticella 16, 120, 127 



Wallengren, 121 

 Walton, 195 

 Watters, 192 

 Wolf, 63, 88, 93 

 Woodruff, 29, 30, 33, 149, 167 

 Woodruff and Erdmann, 30, 32, 34, 

 103, 145 



Yeasts, 63 

 Young, 33 



Zeleny and Mattoon, 207 

 Zweibaum, 165 

 Zygorhynchus, 136 

 Zygospore, 123 



