SUBJECT INDEX 



211 



Insemination 13 

 Insertion method 114, 115, 116 

 Interfacial tension 63, 103 

 Invagination 93 et seq., 101, 



102, 104, 106, 124, 128, 129, 



131, 132, 136, 138 

 Invasion of nerve fibres 174 

 Iris 129 



Irradiation, mesothorium 84 

 — , radium 23 

 — , ultraviolet 53, 71 

 — , X-rays 161, 173, 176 

 Isolation of cleavage cells 28 

 et seq., 35, 44, 56, 59, 63, 72 

 — , physiological 171 



Janus green 43 

 Jaw 139, 158 

 Jelly, egg 13, 14 



Kidney 108, 146, 158 

 Kynurenin 89 



Labyrinth 138 



Lateral line sense organs 157 

 Laws of nature 185, 186 

 Leg 149 



Lens 129, 132 et seq., 136, 145, 

 146, 155, 178 



— epithelium 134 



— fibres 134 



— groove 135 



— placode 129, 134, 135 



— proteins 135 



— vesicle 129, 132, 134, 135 

 Limbs 80, 117, 141 et seq., 156, 



157 

 Limb-bud 141 et seq. 



— primordia 116, 142, 143, 148, 

 152, 153, 155 



— regeneration 172 et seq. 

 Limnaea 18, 99 



— , gradient-field 47 

 Lipids 33, 34 

 Lytechinus 78 



Machine theory 183, 184 

 Magnesium 34 



Mammals 11, 152, 174 



Man 174 



Marginal zone 95 et seq., 98 et 



seq., 101, 106 et seq., Ill et seq. 

 Matrocline hybrids 78, 192 

 Maturation 8 et seq., 16, 18, 58 

 Maturity 2 

 Mechanics, developmental 1, 



28, 183 

 Mechanism 184 

 Median plane 40, 41, 192 

 Melanin 86 

 Melanophores 81, 192 

 Meridional plane 39, 40, 41, 92, 



192 

 Merogony 11, 66, 82 et seq., 192 

 — , heterospermic 82 et seq., 191 

 — , hybrid 82 et seq. 

 — , parthenogenetic 66 

 Mesenchyme 46, 59, 83, 84, 93, 



109, 129, 140, 141, 192 

 Mesoderm 98 et seq., 113 et 



seq., 120 et seq., 142, 143, 192 

 Mesonephros 153 

 Mesoplasm 58, 60, 192 

 Mesothorium 84 

 Metabolism 1, 5, 34, 47, 48, 

 60, 61, 63, 65, 66, 79, 90, 

 118, 120, 126, 144, 147, 164, 

 171 

 — and determination 47, 60 

 — , axial gradient 43, 48, 171 

 — , carbohydrate 47, 79, 118 

 — , protein 47, 89, 118 

 Metamorphosis 19, 85, 174 

 Metanephros 153 

 Methylene blue 43, 171 

 Microdissection 15, 192 

 Micromeres 51, 52, 192 

 Microsomes 25, 33, 34, 65, 86, 



119, 192 

 Migration, cell 81, 92, 105, 106. 



128, 138, 161, 162, 173, 182 

 Mitochondria 33, 65, 192 

 Mitosis 21, 22, 23, 24, 72, 192 

 Modes of operation 185 et seq. 

 Modulation 154, 192 

 Molluscs 10, 15, 31, 92 



