302 



ANIMAL LIFE 



Chromatophores (pigment cells), 



i'i, 163, 172 

 Chrysaora (jelly-fish), 13 

 Climate, influence of, 217, 291 

 Cockles, U3-114 

 Coelenterates, 19 

 Colouration, mating, 193-5 



mimetic, 188-9 



sympathetic, 168-89 

 Colours of animals, 149-89 



relation to excretion, 166-7 



relation to light, 149-89. 

 (See also 'Pigment') 



relation to nutrition, 154-71 



relation to respiration, 155-9 

 Colours of plants, 149, 154, 155, 



161 



Corals, 106-7 

 Corophiutn, 69 

 Crabs, breathing of, 112-3 



masked, 114 



movements of, 38 



pea, 81 



Crayfish, gills of, n 1-112 

 Crustacea, 19, 81, 109, 110, 111, 

 112, 114 



food of, 67-70 



movements of, 38 

 Cuckoo, young, 215 

 Cuckoo-bees, 283 

 Cuttle-fish, 84 



food of, 85 



movements of, 32-3 



DARWIN, on colour, 186 



on earthworms, 6 



on mating selection, 216 

 Death, 291-7 

 Disease, due to animals, 93, 



246-52 



Domestication of animals, 147-8 

 Dormouse, 124, 125 

 Dragon-fly, 33, 89-90 



life history of, 228, 228-231 

 Drones, 197, 292 



ECONOMY (efficiency of organ- 

 isms), 102 



Eels, 28 



Eggs, cuttle-fish, 204 

 dog-fish, 11 



Eggs, frog, 204 



gnat, 204 



goby, 204 



h< rring, 203 



perch, 204 



sea-worm, 202 



skate, 204 



skylark, 211 



tern, 209 



Elaters (beetles), 239 

 Energy, 102 

 Evolution, 21-23, 77 



FEATHERS, 3, 61 



Finsen, light treatment of, 4 



Fish, flat, 46 



food of, 82-4 



gills of, 116 



goby, 47 



John Dory, 84 



movements of, 30, 43 



mud, 117 

 Flagellates, 157-8 

 Flies, black, 257 



food of, 90 



harlequin, 252 



house, 247 



May, 231 



saw, 266 



stone, 232 

 Flight, of birds, 27-9, 57-61 



of insects, 3 1 , 40-42 

 Folsom, 300 

 Food, of birds, 76-7 



of Crustacea, 67-8 



of cuttle-fish, 85 



of fish, 82-3 



of fixed animals, 66 



of insects, 89-92 



of mammals, 76, 89 



of shrimps, 139 



of snails, 73 

 Frogs, care of young, 206 



spawn, 204 



Gammarus (sand-hopper), 68 

 Gills, of Crustacea, 108-10 



of fish, 1 16-7 



of insect larvae, 232, 250 



of worms, 108 

 Gnat, life-history, 248-52 



