INDEX 



701 



Corti, organ of, 597, 600, 601, 601, 604 

 Cortical enlargement, 495 



rays, 416 

 Corticospinal tract, 518, 520 

 Cortin, 452 

 Costal artery, 377 



cartilage, 210, 212 



groove, 212 



processes (ribs), 204, 212 

 Costo-cervical artery, 390 

 Cotyledonary placenta, 120 

 Cotylosaurian, 173 

 "Cowlick "-(vortex), 174 

 Cowper's gland, 426, 428 

 Coxal bone, 241, 250, 251 



glands, 651 

 Crab(s), 14 



horseshoe or king, 15 

 Cranial nerves, 481, 482, 484, 488, 489, 

 490, 5i3> 514, 522, 609, 621, 623, 

 625 

 Cranio ta, 22 

 Cranium, 228, 499 



bones of, 225, 226, 227 



development of, 227 



evolution of, 216, 217, 218, 219, 220, 

 221, 222, 223, 224, 225 

 Crayfish, 14 



"Creative synthesis," xiii 

 Cremaster muscle (externus, internus), 



426 

 Creodonts, 28 

 Crescent, 302 

 Cretaceous, 34 

 Cretin, 456 

 Crew, 449 



Cribriform plate, 227 

 Cricoid, 233, 236, 340 

 Cricothyroid m., 341 

 Cristal, 137, 596, 600, 604 

 Crocodilia, 26, 34, 52, 412 

 Cro-Magnon man, 32, 224, 225 

 Croonian lecture, 609 

 Crossopterygians, 24, 25, 31, 244, 328 

 Crown, 193 

 Crura cerebri, 635 



cerebeUi, 512 



penis, 429 

 Crustacea, 2, 14, 30, 631, 651 

 Crypt, 313 



Cr>T)tobranchus (hellbender), 39, 40 



Cryptorchism, 443 



Ctenophore, 7 



Cuboid(al), 252 



Cuneiform, 233, 236, 252, 340 



Curvatures cervical, 206, 207, 207 



greater, 309, 312 



lesser, 309, 312 



lumbar, 206, 207, 207 



sacral, 206, 207, 207 



thoracic, 206, 207, 207 

 Cusps, 193 

 Cutaneous, 336 



glands, 179 



sense organs, 566, 567, 568 

 development of, 568 

 Cuticle, II 



Cuticula, 8, 9, 21, 135 

 Cutis (corium), 167 

 Cuttlefish, 13, 14 

 Cuvier, 14, 609 



duct of, 352, 356, 357, 376, 382, 654 

 Cyclostome(ata), 2, 20, 23, 31, 44, 88, 



332, 353. 409, 643, 647 

 Cynognathus, 223, 231 

 Cystic duct, 323 



vein, 397 

 Cytology, 127 

 Cytoplasm, 36, 38, 40, 42, 59 



D 



Darwin, vii, ix, x, xiv, 219 



Darwinian principles, 179 



Dasyurus, 27 



Dean, 23, 24 



Death, 3 



Deciduous placenta, 121 



teeth, 198 

 Decussation, 511 

 Deer, 28 



Degeneration, 8, 20 

 Deiter's cell(s), 602 

 Delamination, 70, 75> 80 

 Delsman, 297, 630, 636-642 



hypothesis, 636-640 

 objections to, 640-643 

 Deltoideus m., 247, 248 

 Demersal eggs, 46 

 Demilunes, 302 



