INDEX 



267 



Hylobates, germinal area in, 30 



early chorionic vessels in, 60 

 Hymen, 195 

 Hyoid arch, muscles of, 248 



bone, 257 



Hypochordal rod, 252 

 Hypoglossal nerve, 127, 130, 249, 256 

 Hypophysis, or ectodermic portion 



pituitary body, 115, 256 

 Hypothalamus, 213 



IDIOSOME, of spermatid, 6 



of oocyte, 10 



Imbedding of ovum, 65, 66, 67 

 Inaba, on origin of adrenals, 206 

 Incus, origin of, 257, 258 

 Indusium, 124 

 Infundibulum, relation of notochord to, 49 



development of, 113, 115 



Ingalls, on origin of premuscular tissue in limb- 

 buds, 247 



Inguinal pouch, 200 



Insectivora, early imbedding of ovum in, 66 

 Intermediate cell -mass, formation of, 51 



development of excretory organs from, 



177 



Intervillous space, 76 

 Intestines, development of, 160 et seq. 

 Inversion of germ-layers. See Entypy. 

 Iris, 144 



Island of Reil, formation of, 124 

 Isthmus faucium, 157 



of His, 107 



JACOBSON'S ORGAN, 155 



Jacoby, on basis cranii in human embryo, 254 



Janosik, on Wolffian duct in marmot, 178 



origin of adrenals, 206 



Joint- cavities, development of, in limbs, 254 

 Jones, F. W., on development of vagina, 195 



development of cloaca, 203 

 Jugular vein, primitive, 229 

 external, 231 



foramen, 256 



KATJJUS, on development of tongue in lower 



forms, 159 

 development of larynx in man, 166, 167 



Karyokinesis, 4 



Karyoplasm, 1, 3 



Karyosomes, 3 



Keibel, on invagination of blastoderm in 



human ovum, 30 

 blastoporic aperture in rabbit, 43 

 gastrulation, two phases of, 47 

 closure of neural tube in pig, 105 

 development of optic vesicle in pig, 136 

 Wolffian duct, 178 

 development of cloacal region, 203 

 division of cloaca in Echidna, 203 



Keith, on aortic bulb, 210 



Kephalogenesis, stage of gastrulation, Hu- 

 brecht, 47 



Kidney, permanent or metanephros, 182 

 primitive pelvis of, 182 

 development of tubules of, 184 

 primary lobulation of, 184 



Klein, on origin of lymph- vessels, 235 



Kohn, on development of nerves, 100 



development of sympathetic system, 135 



Kohn, chromaffin bodies, 135 



development of medulla of adrenals, 206 

 Kolliker, on structure of spermatozoon, 5 

 outgrowth theory of nerve-fibres, 99 

 development of sympathetic system, 133 

 lens-capsule and vitreous, 142 

 air-cells of lungs, 166 

 thymus, 172 

 Kollmann, on muscle-plate in human embryo, 



56 

 characters of fourteenth-day embryo, 



described by, 82 

 segmental character of Wolffian body in 



early human embryo, 182 

 origin of Wolffian duct from ectoderm, 



178 



development of mouth, 158 

 origin of limb-muscles, 247 

 Koltzoff, on cerebral nerve placodes, 128 



origin of segmental ganglia in Petro- 



myzon, 129 



head-segmentation in Petromyzon, 249 

 Korschelt, on origin of heterotypical prophase 



figures, 22 



Kowalewsky on gastrula stage, 43 

 Kupffer, outgrowth theory of nerve-fibres, 



99 

 on cerebral nerve placodes, 128 



LABIA MAJOBA, 203 



minora, 203 



Labyrinth, recess of the, 145 

 Lacrymal canals and ducts, 144 



groove, 88 



gland, 144 



Lacrymale, punctum, 144 

 Laguesse, on cellular elements in Selachian 



spleen, 237 

 Lamina affixa, 121 



terminalis, 116, 122, 123 



spiral, 148 

 Laminae of spinal cord, alar and basal, 101, 



102 

 Lancisii, nervi, as vestige of hippocampal 



formation, 124 



Lane-Clayton, on germinal epithelium, 191 

 Langer, on development of lymphatics, 236 

 Langhans' layer, 75, 76 

 Lankester, on blastopore, 43 

 Lanugo, 92, 94 

 Laryngeal nerves, inferior, relation to aortic 



arches, 221 

 Larynx, 166 

 Lateral sinus, 229 

 Lecithophore of Van Beneden, 27 

 Lenhossek, outgrowth theory of nerve-fibres, 



99 

 Lens, rudiment of, from surface ectoderm, 137 



epithelium, 139 



fibres, 139 



vesicle of, 84, 137 



transitional zone of, 139 



capsule of, 141, 142 



Lenticular nucleus, development of, 121 

 Leopold, ovum of, 65, 75, 80 

 Lepidosiren, muscle-plate in, 56 



visual cells in, 140 



fate of cellular elements of spleen in, 237 



anterior mesoderm in, Agar, 249 

 Levi, on development of skull, 254 256 



