304 



ANIMAL LIFE 



Mussel, 8 1 

 cilia of, 35 



messmate-, in, 81 



NEREIS (sea-worm), 200 

 Nervous system, action of, 

 128-45 



development of, 140-4 

 Nests, birds, 206-15 



fishes, 205-6 



mammals, 215 



spiders, 96, 97 

 Newts, armoured, 22 



figured, 20 

 Nuttall, G. H. F., 25 



Orchesella (primitive insect), 71 



Order, 16 



Organic memory, 130-2 



Organisation, 16-25 



Orthoptera, 224-7 (order of 

 insects containing cockroach, 

 grasshopper, mantis, etc.) 



Oxygen, need for, 99 

 quest for, 102-4 

 (See also ' Respiration ') 



Oyster, enemies of, 82 



PARTRIDGE, 181, 182 

 Peckham, on spiders, 216 



on wasps, 300 

 Pheasant, argus, 194 

 Pigeon, wing and dissection of, 



59 

 Pigments, blood, 1 10 



excretory, 167 



fatty, 160-165 



muscle, 159 



of sponges, 107-8 

 Pipe-fish, 177, 206 

 Plants, as food, 65-7 



characteristics of, i, 154 



history of, 77 



pigments of, 161 

 Poulton, on mimicry in butter- 

 flies, 188-9 



Prawn, ^Esop. (See ' Hippolyte ') ' 

 Prosopis (solitary bee), 278 

 Protozoa. (' See Animalcules ') 



breathing of, 105 

 Pupa (chrysalis), 235 



RACES, colouration of, 149 



welfare of, 24, 190 

 Reeves, mating of, 195 

 Respiration, of bivalves, 113 



of Crustacea, 108-13 



of cuttle-fish, 1 15 



of Protozoa, 105 



of univalves, 1 1 5 



of vertebrates, 116-23 

 Response, power of, 127-40 

 Rhizostoma (jelly-fish), 13 

 Rodents, 74, 227 

 Romanes, G. J., 98 

 Ruminants, 76 



SCALE-INSECTS (coccidae), 12, 



219 



Scolopendrella, 39 

 Sea-urchin, 33, 114, 115 

 Seal, 53, 54 

 Sense, organs of, 133 

 Sharp, on insects, 300 

 Shells, no, 113, 114, 115 

 Shrimps, food of, 139 



senses of, 136-9 

 Silver-fish (Lepisma), 223-4 

 Simulium (black-fly), life- 

 history of, 257-60 

 Skylark, nest of, 211 

 Sleep, 129 

 Sminthurus (a primitive insect), 



223 



Snakes, movements of, 50-1 

 Species, 16 

 Spiders, 92 



mating of, 192-3 



webs of, 93-8 

 Sponges, 105-6 

 Starfish, 33, 83 

 Swallows, 208 

 Sympathetic colouring, 168-89 



in prawns, 168-9 



in insects, 183-7 



TASTE, 139 



Teeth (ungulates), 75-6 



Tern, little, 210 



nest of, 209, 210 

 Thayer, on colouration, 181, 189 

 Thyroid (gland), 131, 132 

 Titmouse, nest of, 213 



