272 



PROBLEMS OF RELATIVE GROWTH 



insects, holometabolous, 55 seq., 115, 

 231 



— neuter, 61 seq. 

 insulin, 214 



interaction, of organs of different 



growth-intensities, 195, 196 

 intersexuality, 36 

 isogony, 8, 37 



kidney, chick, 143, 145 



— rat, 184, 264 



Lameere, phenomenon of, 2x3-14 

 leaves, plants, 14, 16, 176 n., 202 

 lens, chick, 144 



— interaction with growth of optic 



cup, 195, J96 

 light, effect on growth, 200 

 limb-buds, Urodele, 135, 192 

 limbs, Amphibian, and thyroid, 179 



seq., 188 



— chick, 142, 143, 144, 146 



— Crustacea, 137 



— fowls, 183, 187 



— insects, 17, 25, 55, 5 6, 113, 114, 



126, 127, 128 



— man, 138 



— sheep, 17, 88 seq. 



— spiders, 262 



' low ' males, 55, 70-6 



mandibles, beetles, 17, 25, 55, 58, 59, 



113, 114, 209-12 

 mane, horse, 102 

 mass-factor, 146 



mathematics, and biology, 2, 244 

 maxilliped, and chela-growth, 123 

 metabolic gradients, 171 

 metamorphosis, 120, 179-82 

 morphogenetic field, 117, 153, 171, 



175, 176 n., 258 

 moulting, and dimorphism, 68 seq. 

 moults, additional, 73 seq. 

 multimodality, 73, 78 

 mutation, and growth-gradients, 222, 



234 



— and growth-ratios, 234 

 myxoedema, 131 n. 



neoteny, 67, 237-40 



nerve-fibres, mammals, 17 



nervous system, and asymmetry of 



Uca, 168, 169 

 neurons, mammalian, 17 

 New Zealand, introduction of Red 



Deer, 207 

 nipper claw, 96, 97, 189-91 

 nitrogen content, mealworm, 26, 29 

 nucleus, neuron, 27 



nucleus, oocyte, 17, 21 

 nutrition, and Forficula forceps, 74, 

 75 



— and relative growth, 193-4, T 97. 



198, 199, 201, 202 



ommatidia, crustacean, 24 



— insect, 27 



oocyte, Hydractinia, 17, 21 



operculum, of Hydroides, 189 



optic cup, interaction with growth of 



lens, 195, 196 

 organizer, in development, 172 

 orthogenesis, 218-19 

 oxygen consumption, 29 

 ovary, 264 



paedomorphosis, 239-40 



parasites, effect on host's growth, 38, 



66 m., 99, 197-9 

 partition-coefficient, 3, 49, 227 

 pelvis, avian, evolution of, 106, 108 

 pereiopods, and chela-growth, 121 seq. 



— crabs, 17, 137 

 periodicity, of growth, 203 

 peristalsis, 173 

 phosphorus-content, mealworm, 28, 



29 



— wax-moth, 30 

 physiology, comparative, 3 

 pituitary, 178, 186, 187, 188, 227, 



257-8, 264 

 placenta-extract, 178 

 polarity, 119 

 position, spatial and morphological, 



116 

 precocial young, 87, 90 

 proportions of parts, change of, 38-41, 



88, 106, 182-8, 200, 201-2, 216- 



23, 224-9, 257, 259 

 pupa, insect, 60 



rate-genes, 4, 228, 229, 230-40 

 recapitulation, 4, 234-40 

 regeneration, and growth, 50, 51 n., 

 53, 85, 100-2, 125-8, 165-7 



— and morphogenetic fields, 152 



— rate of, 166, 190 

 regeneration-gradient, 85, 173 

 regression, of antlers, 44 



— of fowl's comb, 1 78 



— of newt's crest, 179, 180 



— of starved Planarians, 175, 179 

 regulation, of size, 52, 191-7, 228-9 

 retinal cells, 260 



rhythms, of growth, 203 



ringworm, 259 



root, plants, 13, 14, 21 



