INDEX 



273 



Spigelii, lobus, 175 

 Spinal ganglia, 98, 125 



nerves, development of, 125 



cord, development of, 101 seq. 

 fissures of, 102, 103 

 membranes of, 105, 250 

 Splanchnoccel, 177 

 Splanchnopleure, 33, 51 

 Spleen, development of, 236 



venous sinuses in, 237 



in Lepidosiren, 237 



as haemopoietic organ in lower verte- 

 brates, 237 

 Spongioblasts, 96 

 Stapes, 257, 258 

 Stenson, ducts of, 155 



duct of (parotid), 165 

 Sternum, development of, 253 

 Stieda, on origin of lymph-cells in thymus, 



172 



Stilling, canal of, 143 

 Stohr on thymus, 172 

 Stomach, 160, 161 

 Stomodoeum, 83, 156 



connection with pituitary body, 115 



connection with nose, 153 

 Stratum compactum, 68 



spongiosum, 68 



corneum of skin, 94 



germinativum of ovary, 190 



granulosum of Graafian follicle, 191 

 Streeter on occipital nerves, 130 



auditory nerve, 148 



development of ear, 146 

 Striae terminalis, 121 

 Stricht, Van der, on yolk-nucleus in oocyte, 10 



polar bodies in bat, 12 



fertilisation in bat, 15 



on membrane in human ovum, 9 

 Stylo-hyoid ligament, 257, 259 

 Styloid process of temporal bone, 257, 259 

 Subcardinal veins, 227 

 Sublingual gland, 165 

 Submaxillary gland, 165 

 Sulci of brain, principal, 124 



auriculo- ventricular, 210 

 Sulcus of Monro, 113 



terminalis of His, 159, 213 

 Suprarenal bodies. See Adrenals. 

 Sutton on chromosomes in synapsis, 22 

 Sylvius, fossa of, 116 



fissure of, 124 

 Symmetry, bilateral, of vertebrates, origin of, 



47 

 Sympathetic system, 133 



superior cervical ganglion of, origin of, 

 135 



ganglia, connection with segmental nerves, 

 126 



connection of, with suprarenal bodies, 



135, 206 



Sympathoblast, 136 

 Synapsis of Moore in spermatogenesis, 19, 22 



in oogenesis, 22 

 Syncytium, definition of, 2 



mesenchymic, 59 



placental, 73 



development of, in nervous tissue, 96 

 Szily, interepithelial network of, 59, 142 

 as origin of nerve-path, 100 



TADPOLES, removal of neural crest in, 100 

 Tasnia semicircularis, 121 

 Tail-fold, formation of, 54 



gut, 164 

 Tandler, on duodenal epithelium, 163 



arterial arches in mammalia, 217 



stapedial artery, 222 



vitelline arteries, 223 



origin of coeliac artery, 223 

 Tarsius spectrum, blastocyst stage in, 27 



inversion of germinal area in, 31 



origin of early mesoderm in, Hubrecht, 

 34 



primitive entodermal plate in, 35 



notochordal canal in, 39 



blastoporic aperture in, Hubrecht, 43 



origin of head end of notochord in, 

 Hubrecht, 49 



mesenchyme in, origin of, from entoderm, 

 58 



origin of blood-vessels in, Hubrecht, 62 

 Tegmentum, 111 

 Tegmen tympani, 256 

 Tela choroidea, 110, 113, 121 

 Telencephalon, 115 

 Telolecithal ovum, 9 



type of cleavage in, 27 

 Testicle, descent of, 196, 197, 199 

 Testis, 191, 192 

 Tetrads, 20 

 Thalami, optic, 111 

 Thompson, Peter, on segments in rhombic 



brain, 107, 129 

 Thymus, 160, 169, 172 

 Thyroid, 159, 160, 168 



cartilage, development of, 167 

 Tongue, development of, 159 



muscles of, 248 



foramen caecum of, 159 



papillae of, 160 



sulcus terminalis of, 159 

 Tonsils, development of, 160 

 Torcular Herophili, 229 

 Trachea, 166 



Trapezoid plate or field, 118, 122, 124 

 Trigone of bladder, 186 



Trigonum hypoglossi, from basal lamina, 

 108 



habenulae, 114 



olfactorium, 118 

 Triticea cartilago, origin of, 168 

 Trophoblast or trophic epiblast, 26 



in placentation, 67, 74 

 Truncus arteriosus, 206 



cleavage of, 215 

 Tuber culum impar, 159 

 Tuber cinereum, 111, 113 



valvulae, 110 



Tubules in human embryo representing 

 prone phos, 177 



of Wolffian body, origin of, 181 



of kidney, origin of, 183, 184 

 Tunica vasculosa of lens, 143 



albuginea, rudiment of, 191 



vaginalis, 199 



Tupaja, inversion of germinal area in, 31 

 Turbinate processes, 155 

 Tympanic membrane, 149 

 cavity, 149 seq. 

 ring, 259 



T 



