11 



INDEX OF PART I. 



Balfour, F. M. continued. 



Miillerian duct, 122, 123 



muscle plate, outer, 161 



nerves, epiblastic, origin of, 57 

 spinal, anterior roots of, 74 



neural crest, 73 



oesophagus, obliteration of lumen of, 104, n, 



ova, formation of, 124 



parablast, 27, n. 



primitive groove, 23 



polar globules, theory of, 14 



supra-renals, 122 



svmpathetic system, 8 1 



Wolffian body, 115, n. 

 duct, 118 



vitelline membrane, 8 

 Bars, cartilaginous, of mandibular arch, 166, 168 



palato-pterygoid, 166 



hyoid, 1 66, 168 



thyro-hyoid, 166 

 Bartholiu. glands of, 128 

 Basal layer of placenta! decidua, 5 1 



attachment of villi to, 52 

 Basis cranii, 166 

 Bat, placental sinuses in, 52 

 Bauchstiel (abdominal stalk), 46 

 Beard on branchial sense-organs, 76 

 Beneden, v., vitelline membrane, 8 



formation of polar globules, 9 



entrance of spermatozoon in Ascaris, 1 1 



division of nucleus in Ascaris, 12, 16 



blastodermic layers, 18 



blastopore, theory of, 23 



pro-amnion of, 35 

 Bile ducts, 112 



Birdsell on sympathetic nerves, 81 

 Bischoff on inversion of blastodermic layers, 23 

 Bladder, urinary, 122 



Blastoderm (/8A.a<rT(k, a bud, Sf'ppa, skin), for- 

 mation of, 17, 1 8 



three layers of, 17 



gastrula condition of, 21 

 stage typical, 22 



bilaminar, 21 



layers, inversion of, 23 



historically considered, 23, 24 



characters of layers of, 24 



table of development from layers of, 25 



four layers of, 26 



separation of embryo from, 34 

 Blastodermic vesicle, definition of, 17 



growth in the cat of, 18 



invagination of, 22, 23, 24 



as yolk-sac, 35 



first attachment of to uterus, 53 

 Blastopore (0\a<rr6s, a bud, ir6pos, a passage), 

 discussion of in meroblastic ova, 22, 23 



diverticula, near to in Sagitta, 26 



connection of anus with, 108 

 Blochmann on extrusion of one polar globule by 



parthenogenetic ova, 14 

 Blood, origin from parablastic cells, 21, 25 



corpuscles, 40 

 Blood islands of Pander, 39 

 Blood vessels, formation of, 40 

 Body, segmentation of, 2 

 Body-cavity. See CCELOM 

 ; >onnet on middle blastodermic layer, 21 



on connection of notochord with buccal eni- 



blast, 68 



protovertebral cavity, 160 

 !> >orn on the lachrymal canal, 89 



Born continued. 



cephalic clefts, 102, n. 



thyroid, in 



septum spurium, 141, n. 



auricular canal, 142, 144 



ventricular septum, 142, n. 



foramen ovale, valve of, 144 



pulmonary veins, 144 

 Boveri on polar globules in Ascaris, 9 

 Bowman, anterior and- posterior homogeneous 



lamellae of, 88 

 Brain, development of, 61 



flexures of, 63 



fissures and convolutions of, 71 

 Branchial sense-organs of Beard, 76 

 Bronchi, 109 

 Brown, H. II., on extrusion of part of nucleus 



of seminal cell, 12 

 Budge on lymphatic system, 157 



C.ECUM (blind), 107 



Calamus scriptorius (writing pen), 62 



Callender on 4th visceral arch, 103 



Canalls re-unieus. 91 



Capsule of lens, 87 



whence derived, 87 

 Capsule, cartilaginous nasal, 166 



periotic, 166 



Carnoy on polar globules in Ascaris, 9 

 Cat, blastodermic vesicle of, 18 

 Cauda equina, 60 



Centra (/ceVrpoj/, a point), of vertebrcc. 2 

 Centrolecithal (Kevrpov, centre, \-finv8os, oil- 

 bottle), ova in arthropods. 8 

 Cerebellar peduncles, 66 

 Cerebellum, 62 



formation of, 66 



amygdalae of, 66 

 Cerebral vesicles, 37 



table of development from, 61 



fifth, orbulbar, 63 



fourth or cerebellar, 66 



third, mid-brain, 67 

 second, 67 

 first, 68 

 Chick, pro-amnion in, 34 



rudiments of cranial nerve ganglia in, 75 

 Choanae (xtavos, a pit for melting metal in), 97, 



100 



Chorda dorsalis, 32. Sec NOTOCHORD. 

 Chorda tympani, 79 

 Chordae tendinese, 142 

 Chorion (xfyiov, skin), definition, 42 and n. 



junction of allantois with, 44, 46 

 Choroid coat, 87, 88 

 Choroid plexuses, 62, 67, 70 

 Choroidal fissure, 85 

 Chromatin, filaments of, 12, 16 

 Chromosomes (xp&P-a, colour, <ro>/xa, body), 12 

 Ciliary body, 88 

 Circulation, fretal peculiarities of, 155 



course of, 156 



changes of at birth, 157 

 Cloaca, 108, 122, 123, 127 



Cochlea (/co^A/as, a snail with a spiral shell), 

 canal of, 90 



ganglion of, 78 



in birds, 92 



modiolus of, 93 



bone of, 93 



spiral lamina of, 93 



