INDEX 



231 



Darwin, Charles, 20 



family history of, 201 



life and work of, 200 



method of work, 223 



personal characteristics, 224 

 Darwin, Erasmus, 202 

 Deer, antlers of, 93 



colour of, 124 

 Degeneration, 159 

 Dentalium, 58 

 Descent of man, 193 

 " Descent of man," 2 1 5 

 Design and forethought, evidence 



of, 171 

 Didelphys, 56 

 Dimorphism, seasonal, 121 

 Dinosaurus, 65, 180 

 Dorking fowl, 35 

 Draco volans, 169 

 Drake, epigamic coloration in, 141 

 Dromedary, 71 

 Drosera, 219 



Earliest commencement of or- 

 gans, 164 



Ear-muscles of man, degeneration 

 in, 96 



Earthworms, formation of mould 

 by, 220 

 habits of, 221 

 weight of castings of, 222 



Echidna, 184 



Echinodermata, fossils of, 60 



Echinus, metamorphosis in, 105 

 pluteus, larva of, 102 



Edentates, extinction of, 69 



Eisig's theorv of warning colours, 

 136 



Electric organs of fish, 1 70 



Elephant, probable extinction of, 

 69 



Elk, Irish, fossils of, 56 



Embryology, 78 



Embryonic stages viewed as an- 

 cestors, in 



Emperor moth, epigamic colora- 

 tion of, 141 



Environment, action of on colour, 

 119 

 influence of, 49 



Eohippus, 67, 69 



Epigamic coloration, 122, 141 



Ermine, colour of, 124 



Eurypterus, 57 



Evolution, doctrine of, 19 

 history of, 1-24 



Exoccelus, 169 



'•Expression of the Emotions," 215 



Extensor primi internodii pol- 

 licis muscle, 195 



Eyes, evolution and development 

 of in Mollusca, 107 



Faxtail pigeon, 28 

 Fertilisation of flowers by insects, 



144, 216 

 Finger prints, 45 

 Fissure I la, eye of, 107 

 Fitzroy, Captain, 205 

 Flat fish, development of, 85 

 Florida, variation of birds in, 44 

 Flounder, development of, 86 

 Flowers and fruit, colours of, 143 

 Flying fish, 169 

 lemur, 169 

 lizard, 169 



reptile, 66 ; squirrels, 168 

 Food-yolk, influence of, ondsvel- 



opment, 98, 185 

 Foraminifera, fossils of, 60 



variation in, 43 

 " Formation of vegetable mould 

 through the action of worms,'' 

 220 

 "Forms of flowers," 217 

 Fossils, conditions necessary for 



preservation of, 60 

 Frog, development of, 100 

 Fruits, attractive and protective, 

 149 



