244 



Index 



Galapagos Islands, 64 

 Geikie, Sir Archibald, 21 

 Genes, 126, 146 

 Gill-clefts, 81 

 Glands, endocrine, 226 

 Goldfishes, 148 

 Gorilla, 153 

 Graham, Thomas, 25 

 Gregory, Sir Richard, 14 

 Griffith, 167 

 Guinea-pigs, 165 

 Guyer, M. F., 171 



Haas, Arthur, 15 

 Habit-forming, 153 

 Habits, 149 

 Habituation, 158 

 Hansom, F. B., 164 

 Heather, 104 

 Henderson, 23 

 Heredity, 145 

 Homo sapiens, 218 

 Hormones, 172, 226, 227 

 Hunger and love, 119 

 Hutton, James, 21 

 Huxley, 118 

 Hyphaenosymphily, 114 



Iguanodon, 56 

 Inflammation, 131 

 Islands, 63 



Jeans, 7, 9 

 Johannsen, 144 

 Jones, F. Wood, 213 

 Jungle-fowl, 91 



Kallima, 134 



Kant, 3 



Keith, Sir Arthur, 208, 216 



Kemner, N. A., 113 



Lamar ckian theory, 170 

 Lamarckism, 152 

 Lancelet, 62 



Laplace, 3, 11 

 Leaf-butterfly, 134 

 Leaf-cutting ants, 107 

 Leaf-insect, 136 

 Leiper, 103 



Lenses, experiments on, 171 

 Leucochloridium, 103 

 Life, origin of, 42 

 Lightfoot, John, 231 

 Lizards, giant, 66 

 Lotsy, 145 



Lull, R. S., 60, 213, 215 

 Luminescence, 105 



MacDowell, E. C, 163, 167 



Man, evolution of, 193, 202, 203 

 , continued evolution of, 



220 



genealogical tree, 208 



Man's evolution, factors in, 212 

 Marsupial, 61 

 Maxwell, Clerk, 15 

 Mendeteeff, 29 

 Mendelian inheritance, 147 

 Meteorological cycle, 27 

 Mind and body, 228, 229 

 Modifications, 150, 151 

 Morgan, C. Lloyd, 205, 209, 230, 



233, 235 

 Morgan, T. H., 145, 146 

 Mudfish, 74 

 Mutations, 125 

 Myrmecophily, 110 



Napoleon, 11 



Natural Selection, 122, 132 



Nature-Psalms, 12 



Neanderthal man, 214 



Nebula, spiral, 6 S 7 



Nebular hypothesis, 3 



Nerve-cells, 82 



New Zealand "Lizard," 54 



Newton, 16 



Notochord, 81 



Nuttall, 93 



