262 



INDEX 



Ascaris megalocephala, nuclear changes in 

 during maturation, 12 



division of chromosomes hi, 16 

 Assheton, theory of gastrulation of, 48 

 Atlas, 252 

 Atrium of right auricle, 211 



or rudiment of utricle and saccule, 



Streeter, 146 

 Attraction -sphere, 2 



fate of, in spermatid, 6 

 Auditory pit, 145 



vesicle, 145 



nerve, 148 



ossicles, 257 



capsule, 256 



Auricular canal, 206, 213 

 Auriculo-ventricular openings, 213 

 Azygos veins, 228 



BAER, VON, on zona pellucida, 7 

 spermatozoon, 5 

 primitive nerve theory, 100 



Balbiani, body of, in young oocyte, 10 



Balfour, F. M., on outer lamella of myotome, 56 

 nerves, cell -chain theory of, 99 

 sympathetic system, origin of, 133, 135 

 adrenals, 206 



Bardeen, on muscle-plate, 56 



development of muscles, 246, 248 

 development of skeleton, 250, 252, 254 



Basichromatin, 3 



Basicranial plate, formation of, 254 



Bat, entypy of germinal area in, 31 



formation of notochordal canal in, 41 

 persistence of floor of notochordal canal 



in, 46 



differentiation of chorionic epithelium in, 

 75 



Beard, on branchial sense-organs, 128 

 on thymus, 172 



Benda, mitochondria of, 2 



Beneden, Van, lecithophore of, 27 

 on inversion of blastoderm, 30 

 notochordal canal in bat, 46 

 phylogeny of primitive streak, 48 

 origin of placenta in lower mammals, 74 

 cytoblast and plasmodiblast, 74 

 differentiation of chorionic epithelium in 

 bat, 75 



Beneke, ovum of, 80 



Bertin, primary columns of, 185 



Bethe, on neuroblasts, 98 



Bidder, outgrowth theory of nerves, 99 



Bile-duct, rudiment of, 173 



capillaries, formation of, 174 



Birds, cochlea in, 148 



development of olfactory nerve in, 155 



Bladder, gall, rudiment of, 174 

 urinary, 185, 186 



Blastocyst, formation of, 26 

 in Tarsius spectrum, 27 

 invagination of cell-mass into, 27 

 wall, separation of. from yolk-sac, 33 

 wall, attachment of, to yolk-sac, 35 

 size of, related to imbedding, 67 



Blastoderm, 25 

 bilaminar, 29 

 trilaminar, 32 

 inversion of, theories of, 30 

 bilaminar, in holoblastic ova, 43 



Blastomere, 25 

 Blastopore, 43 



fusion of lips of, 47 



as origin of anus, 48 

 Blastula, formation of, 43 



in amphioxus, contrasted with mam- 

 malian blastocyst, 45 

 Blood, first appearance of, 59 



corpuscles, origin of, 60, 174, 237 



islands of Pander, 59 



vessels of yolk-sac, 59 



vessels of embryo, 61 

 Bonnet, on origin of mesoderm, 36, 39 



blastoporic aperture in dog, 43 



notochord in dog, origin of head end of, 



49 



Bonnot and Seevers, on vitelline artery, 223 

 Born, on lacrymal canal, 144 



development of tongue in pig, 159 



development of heart, 212 

 Boveri, on centrosome, 2 



centrosome in fertilisation, 15 

 Brachet, pleuro-peritoneal membranes of, 241 



mesolateral fold of, 242 

 Brachia of corpora quadrigemina, 113 

 Bradley, on development of cerebellum, 110 



neuromeres in pig, 129 

 Brain, development of, 105 et seq. 



flexures of, 106 



blood-supply of primitive, 221 



veins of, 229 

 Branchial arches, clefts, pouches, 83, 149, 158 



region, interpretation of serial characters 

 of, 130 



group of muscles, 248 



sense-organs of Beard, 128 

 Brauer, on pronephros in Gymnophiona, 177 

 Broman, on segments of rhombic brain, 107, 

 130 



development of auditory ossicles, 258, 260 

 Bronchi, rudiments of, 166 

 Bryce, on spleen, histogenesis of, 237 

 Bucco-nasal membrane, 153 

 Bucco-pharyngeal membrane, 52, 53, 156 

 Budge, on lymphatic system, 236 

 Burdach, tract of, 103 



C2ECTJM, 164 



Calcar avis, 124 



Calf, basis cranii in, Froriep, 255 



Cameron, on pineal diverticulum in lower 



vertebrates, 114 



Canals, semicircular, 146, 147, 256 

 Canalis reunions, or duct of Hensen, 148 

 Capsule, internal, 120 



of lens, 142, 143 



auditory, 256 



olfactory, 257 



of Bowman, rudiment of, 184 

 Cardinal veins, 226 

 Carnivora, allantoic vesicle in, 55 

 Carotid gland, from chromaffin system, 135 



system of arteries, 217, 219, 221 

 Cartilage of Santorini, 167 



of Wrisberg, 167 

 Cartilage triticea, 168 

 Caruncula lacrymalis, 144 

 Cauda equina, 103 



Caudal arch, secondary, Young and Robinson, 

 223 



