266 



Plumage, "eclipse," no, 112 



of nestlings, 78, 102, 107 



sexual, 69, no 



successive, gg, 108 

 Pocock, R. I., 198 

 Pointer, 42 

 Poisonous plants, 244 

 Polar bears, 43, 77, 86, 168, 169 

 Polecat, 42, 87, i6g 

 Polygordius, 24, 25 

 Polyps, 117,233 

 Pompilida, 128 

 Pond-snail, 130 

 Pond-tortoise, 143 

 Porcupine, 176 

 Porphyrio, 241 

 Porpoise, 75, 240 

 Poulton, Professor E. B., 76 

 Pout, 136 

 Prairie-dogs, 178 

 Prawns, 29, 121 

 Preen-gland, 184 

 Prolegs, 32 

 Prongbuck, gi 

 Protection, coloration, 74, 155 



of larvse, 224 



by spots and stripes, 96 



of young, 225 

 Protein, 185 

 Protococci, 117 

 Protopterus, 135 

 Protozoa, 6 

 Puffin, 149, 153 

 Puma, 85, 167 

 Puppies, 10, 87 

 Pycraft, W. P., 102 

 Pythons, 146, ig6, 197 



Quadrupeds, 240, 241 

 Quail, 106 

 QuiUs, g7, 98 



Rabbits, 3, 46, 72, 75, 77, 149. 

 Raccoons, 10, 87, 169, 176 

 Rails, loi, 102, 104 

 Rainbow, 112 

 Rana, 140 

 Ratel, 79, 87, 147 

 Rats, 46, 176, 178, 331 



INDEX 



Rays, 139 



Reactions of living matter, 236 



Recognition, 71, 131, 145 



Red deer, 92 



Reed-buck, 89 



Reindeer, 92 



Regent's Paxk, squirrels in, 147 



Reptiles, ancestors of birds, 159 



mammals, 163 

 breeding, 51 

 feeding, 196 

 incubation, 163 

 longevity, 50 

 reduction of family, 142 

 sexual coloration, 70 

 size, 48, 50 

 skin glands, 184 

 scales, 81 



young, 15, 51, 176, 195 

 Respiration, 113 

 Rhacophorus, 142 

 Rhea, loi, 107, 154, 161 

 Rhinoceros, 45, 93, 94, 172, 19O 

 Rhinoderma, 141 

 Rhubarb, 194 

 River-hog, 93, 218 

 Roan antelope, 89 

 Rock-hopper, 104 



rabbit, 44, 173 

 Rodents, 46, 77, 95, 147, 164, 175 I77i 



178, 204, 219, 234 

 Roe of herring, 322 

 Roe-deer, 92 

 Rollers, 153 



Romanes, Professor J. G., 201 

 Rookeries of penguins, 104, 152 

 Rose, W., 56 

 Ruby-flies, 127 

 Ruminants, 46, 87, 93, 170, 184 



Sable antelope, 89 



Salamander, 2, 17, 40 



Saliva, nests of, 152 



" Sally," the chimpanzee, 209 



Salmon, 52, 135 



Sambur, 92 



Samlets, 52 



Sand-goby, 135 



Sand-grouse, 10 1 



