INDEX 



271 



Nestling birds, obedience to 



alarm notes, 59-60 



parasites of, 82 



parental care of, 57 



play of, 94 



protection from weather, 



93 



pugnacity of, 84, 263 



striped coloration of, 98 



Nestlings, condition determined 



by food-yolk, 120 



— down of, 116 



— in unusual nurseries, 127 



— of megapodes, strange his- 

 tory of, 129 



— ornament in, no 



— types of, 115 



Newt, larvae, history of, 186 

 Nicoll, J. M., and penguin 



rookery, 83 

 Nidicolous nestlings, 73, 75 

 Nostrils, absence of in birds, 146 



Opossum shrimp, care of young 



in, 241 

 Opossum, young of, 13 

 Ornament in nestlings, no, 112 

 Ornithorhynchus, eggs of, 6 

 Osprey, nestling, distressed by 



heat, 93 



— striped young of, 100 

 Ostrich, nestling, coloration of, 



98 

 Owl, Tawny, nestling of, 151 



— Bam, nestling down of, 153 

 Ox, number of young of, 2 1 



Parrots, nestling beaks of, 143 

 Partridge, care of young in, 58 

 Peacock-pheasant, curious shield 



for young of, 62 

 Pelicans, young eating fellows, 8 1 

 Penguins, nestling, colonies of, 83 

 Petrels, method of feeding 



young, 77 

 Phalangers, flying, young of, 13 

 Pig, number of young, 21 



— reproductive of, 23 

 " Pigeon's milk," 77 

 Pipe-fishes, care of young in, 220 

 Pit-vipers, remarkable colora- 

 tion of young, 174 



Platypus, eggs of, 6 



Play of fishes, 237 



Plethodon salamander, carriage 

 of eggs in, 201-2 



Plover, Egyptian, young, bury- 

 ing in sand, 60 



Plovers, coloration of nestlings, 



99 

 Plumage changes, evolution of, 



107 et seq. 

 Polyandry, disadvantages of, 57 

 Polygamy, disadvantages of, 57 

 Pond-tortoise, hibernation of 



embryo in, 161 

 Ponies, stripes of, 32 

 Prawn, transformations of a, 239 

 Precocious types of nestlings, 



56.63 

 " Primitive " animals, meaning 



of, 55 

 Privet-hawk moth, eggs of, 242 

 " Protoptyles," definition of, 



106 

 Ptarmigan, care of young in, 57 

 Puflfins, feeding young among, 



76 

 Puss-moth, remarkable larva of, 



245 

 Python, brooding eggs, 159 



QuaU, care of young by male, 62 



Rabbit, condition of birth at, 9 

 Regurgitation in feeding young 



birds, 70, 77, 79 

 Reptiles, ovo- viviparity in, i6o 



— stripes of young in, 165 

 Ribbon-fish, remarkable larva 



of, 224 



Salamanders, lungless, 188 



— giant eggs of, 201 



— loss of lungs by, 188 



— nursing habits of, 202 



— strange food of embryo, 204 



— viviparous, 204 

 Sand-grouse, bringing water to 



nestlings, 81 

 Sanitation among birds, 73, 74 

 Sars, Prof., on cods' eggs, 215 

 Scorpions, care of young, 265 

 Seal, young, coloration of, 35 



