INDEX 



Abnormalities of form, 56, 67 



Acidity, 78, 80, 154 



Age, homogeneity of, 44, 49 



and fission, 81, 90 



and growth, 18-41 



and regeneration, 96 



of culture, see Culture medium 

 Alkaloids, 38, 53 

 Area, growth in, 24, 29 



least, and fission, 169 

 Assimilation rate, 38, 126, 166 

 Assortation of sizes in mating, 

 108-112 



Biotype, 56, 59, 63 



see also Selection 

 Bivalent cells, 203 

 Bulk, total, in cluture, 33-35, 127, 

 140-146 



Cannibalism, 8, 105-107 

 Cell theory, 5 

 Chamber progression, 84 

 Chemical influences, 97, 146-157 



on fission, 81-82 



on growth, 38 

 Chlorophyll, 202 



see also Photosynthesis 

 Chromatin, volume of, 177, 204 

 Clone, 54, 55, 59, 61, 65, 69 

 Comparative sizes, of species, 



14-17 

 Concentration, see Osmotic pres- 

 sure 

 Conjugation, 74, 104-107 



effects of, 64, 109, 112-116 

 Correlation of functions, 190-193 

 Correlation of sizes, 44, 57, 115 

 Culture medium, 55, 56, 63, 72-74 



age of, 135-146 

 Cutting, 65, 79, 88, 178-!80 

 Cysts, formation of, 62, 63, 54, 64, 

 74, 176 



parthenogenetic, 62 



Density, see Specific gravity 

 Depressions, physiological, 76, 78, 



120, 187 

 Diffusion, 158-163 

 Divisibility, 95, 194 

 Duration of life, 89-90, 192 



Electrical charge, 170 

 Encystment, see Cysts, formation 



of 

 Endomixis, 77, 117-121 

 Expenditure and supply, 12, 194 

 External factors, and size, 122-157 



Fission, 3, 70 



see also Multiplication rate 



and age, 90, 134 



and growth, 3, 32, 93 



and size, 87-97, 135, 141 



and surface tension, 168 



equality of, 205-207 



incomplete, 79-83 



reasons for, 195 



theories of, 168, 172 

 Food, 74, 128-135 



see also Starvation 



and growth, 35-38, 106 

 Frequency of sizes, 4, 26, 48, 50, 



62, 65, 200 

 Fusion, 98-107 



see also Conjugation 



of individuals, 67, 98 



of pseudopodia, 98, 101 



Gametes, 54, 104 

 Genetic homogeneity, 44, 49 

 Genetic relationship, see also 

 Clone, Parents, Sister indi- 

 viduals 



and fusion, 101-103 

 Genotype, see Clone 

 Geometric factors of size, 12-13 

 Grafting, 100 

 Growth, 18-41, 169, 197-199 



and nutrition, 35-38 



231 



