INDEX 



Glottis, rudimentary, development of, 166 

 Goll, rudiments of tracts of, 103 

 Graafian follicle, origin of, 190 

 Graham Kerr, on muscle-plate in Lepidosiren, 

 56 



visual cells in Lepidosiren, 140 

 Greil, on aortic bulb, 207 

 Groove, primitive, 36 



lacrymal, 88 



urethral, 202 

 Gubernaculum testis, 199 

 Guinea-pig, formation of amnion in, 31 



entypy of germinal area in, 31 



allantois in, 55 



imbedding of ovum in, von Spec, 67 

 Gymnophiona, pronephros in, 177 

 Gyrus subcallosus of Zuckerkandl, 124 



cinguli, 124 



HABENTJLAR REGION, 114 



Haeckel, on gastrula stage, 43 



Haemolymph-glands, 236 



Haftstiel, or connecting stalk, 34 



Hair-cells, 148 



Hammar, on development of tongue, 159 



of tonsils, 160 



of tympanum, 149 



on thymus, 172 

 Harrison, on origin of sheath of Schwann, 



100 

 Hart, Berry, on origin of hymen, 195 



development of prepuce, 203 

 Hassall, corpuscles of, origin of, 172 

 Head-plate in trilaminar blastoderm, 35 



end of embryonic axis, origin of, 47 



muscles of, 248 



cavities in lower forms, 248 

 Heape, on zona radiata, 8 



rudimentary blastopore in the mole, 43 



pre- maturation stages in rabbit, 11 

 Heart, appearance of rudiment of, 61 



endothelial lining of, origin of, 62, 206 



appearance of constrictions in, 63 



development of, 206 el seq. 



septa of, 211, 212 



valves of, 211, 213, 215, 216 



fretum Halleri of, 207 



auricular canal of, 206, 213 



chordae tendineae of, 215 



foramen ovale of, 212, 233 



limbus Vieussenii of, 235 



muscle of, origin of, 62 



column carneae of, 215 



foetal, peculiarities of, 233 

 Hedgehog, entypy of germinal area in, 31 



blastoporic aperture in, Hubrecht, 43 

 Held on neuroblasts, 98 



origin of sensory nerve roots, 99 



theory of origin of nerve -fibres, 100 

 Henle, looped tubule of, 184 

 Hensen, knot of, 32, 35 



primitive nerve theory of, 100 



duct of, or canalis reuniens, 148 

 Hepatic veins, 224 



Heredity, chromosome cleavage in, importance 

 of, 16 



Weismann's theory of, 21 



Mendel's Law of, 23 



Herring, on development of kidney-tubules, 

 184 



Hertwig, on nuclear phenomena in Ascaria 

 megalocephala, 12 



development of mesoderm, 36 



concrescence theory of, 47 



theory of origin of nerve-fibres, 100 



mesenchyme of, 58 



Heterotypical mitosis of sex-cells, 4, 18 

 Hind-brain or rhombencephalon, 106 

 Hind-gut, formation of, 54 



connection of, with Wolffian duct, 164 

 Hippocampal commissure, 122, 123 



formation, fate of, 124 

 Hippocampus, development of, 121 

 His, W., Jr., on origin of sympathetic, 135 



cochlear ganglion, 148 

 His, W., Bauchstiel or abdominal stalk of, 54 



rule for estimating age of embryos, 80 



on embryonic blood-vessels, from vascular 

 area, 61 



concrescence theory of, 47 



characters of embryos described by, 82, 

 83, 84, 86 



neuroblasts of, 96 



spongioblasts of, 96 



on neurone theory, 100 



closure of neural lamina?, 108 



brain of sixth -week embryo, 113 



growth of corpus callosum, 124 



direction of motor fibres of facial nerve, 

 132 



development of sympathetic, 133, 135 



trapezoid area of, 118 



on optic vesicle, development of, 136 



appearance of nerve -fibres in optic stalk, 

 140 



development of olfactory nerve, 99, 

 155 



tuber culum impar, 159 



furcula of, 159, 167 



on accessory thyroid bodies, 168 



development of thymus, 172 



characters of division of bronchi, 166 



isthmus of, 107 



septum superius of, 212 



sulcus terminalis of, 213 



porta vestibuli of, 234 

 Hochstetter, on inferior vena cava, 227 



development of nose, 151 

 Holoblastic, definition of, 27 



segmentation in mammals, 25 

 Homotypical mitosis of sex-cells, 18, 19 

 Hubrecht, on trophoblast, 26, 71 



phylogeny of mammalian ovum, 27 



Tarsius spectrum, 27 



formation of entodermic sac, 29 



invagination of blastoderm, 30 



derivation of early mesoderm in Tarsius. 

 34, 35, 39 



gastrulation, two phases of, 47 



blastoporic aperture in mammals, 43 



origin of head end of notochord in 

 Tarsius, 49 



vascular mesenchyme, origin of, 62 



development of placenta, 74 



radial symmetry of fore-part of head, 



249 



Huntington, on origin of lymph-vessels, 236 

 Hyaloid membrane, 143 



artery, distribution of, 142, 143 

 Hydatid of Morgagni, 194 



