856 



Subject Index 



Smooth muscle, 179, 218, 285, 312 (see 



also Non-striated muscle) 

 Snake(s), 55, 56, 115, 124, 128, 229, 23S, 



478, 484, 486, 488, 489, 490 

 Snipe, 546 

 Snout, 679, 680 

 Soft palate, 611 

 Sole, 574 

 Sole-horn, 576 

 Solitaire, 551 



Somatic, 22, 154-157, 175, 182, 213-215, 

 275, 609, 610 



differences, 609, 610 



layers, 269, 270, 278, 279, 281 



muscles, 154, 155, 156, 157 



nerve-fibers, 171, 182 



nerves, 160 

 Somatopleure, 270, 277, 279, 289, 290, 292, 



294 

 Somites, 89, 261, 268, 270, 277, 278, 279, 

 288 



mesodermal, 261, 270, 2S3 (see also 

 Myotomes) 

 Sorex vulgaris, 736 

 Sound, production of, 614, 615, 700 

 Space(s), intercellular, 63 



temporal, 602 

 Spalacotherium, 45 

 Sparrow(s), 553 



English, 528 

 Specialization, 297 



of birds, 503-505 



degree of, 794 



lines of, 794-797 



among multiple organs, 797, 798 



over-, 795 



of primates, 806-809 

 Species, 390 



origin of, 345 

 Specificitv, histological, 330 

 Sperm, 79, 231, 238 



whale, 765, 766 

 Spermatic arteries, 68, 652 



cord, 652 



duct (see Vas deferens) 



vein, 652 

 Spermatids, 232 

 Spermatocytes, 232 

 Spermatogonia, 232 

 Spermatophore, 238 



Spermatozoon(oa), 231, 232, 233, 236-238 

 Sphenisciformes, 544 



Sphenodon, 61, 92, 116, 465, 470, 473, 4*4, 

 485 



punctatum, 484 

 Sphenoid bone, 122, 199 

 Sphenoid(al) sinuses, 605, 677 

 Sphenopalatine ganglion, 178, 179, 183 

 Sphincter(s), 25, 26 



coli, 92, 100 



pyloric, 29 

 Spinal accessory nerve, 168, 183 



cord, 6, 106, i07, 142, 143, 144, 145, 151, 

 152-154, 152, 153, 158, 171, 173, 

 177, 178, 179, 191, 277, 279 



Spinal ganglions, 169, 170, 171, 177, 271 



nerves, 169-173, 170, 177, 180, 184, 

 272 

 Spine(s), integumentary, 369, 370 



hemal, 106 



neural, 107 



of tooth, 47, 51 

 Spinocerebellar tract, 170 

 Spino-occipital nerves, 168 

 Spinous process, 109 

 Spiny anteater, 236, 238, 242, 276, 384 

 Spiracle(s), 118, 160, 161, 275 

 Spiral ganglion, 166 



valves, 28, 30, 641 

 Splanchnic, 22, 269 (see also Visceral; 



layer, 269, 270, 278, 281 



nerves, 177, 178, 179, 185 

 Splanchnocoel, 277 

 Splanchnopleure, 270, 277, 279, 289, 290, 



292, 294 

 Spleen, 14, 65, 183, 185 

 Splenial, 126 

 Splint bones, 752 



Squalus, 6, 18, 48, 58, 64, 93, 108, 114, 143, 

 146, 152, 163, 233, 423 



acanthias, 376 

 Squamata, 484, 490 



Squamosal, 125, 126, 128, 563. 602, 692 

 Squamous epithelium, 304, 305 

 Squirrel, 740 



flying, 775 

 Stalk, optic, 117, 149, 163, 200. 202, 273 



umbilical, 293 



yolk, 6, 290 

 Stapedial artery, 694 

 Stapedius muscles, 98, 696 

 Stapes, 122, 477, 563, 693, 695 

 Starch, digestion of, 637 

 Stargazer, 440 

 Starlings, 553 

 Static organ, 396 

 Stegocephalia, 448, 460, 468 

 Stegosaurus, 499 

 Stegoselachii, 421 

 Stellate cells, 204 



ganglions, 176, 178, 185 

 Steno rostratus, 766 

 Steno's duct, 636 

 Stomal axis, 137, 138 

 Sternebrae, 586 



Sternohyoid muscle, 99, 593, 605 

 Sternomastoid muscles, 92, 168, 593 

 Sternothyroid muscles, 593 

 Sternum, 99, 107, 113, 114, 115, 132, 134, 



471, 518, 586 

 Stigmas, 396, 399 

 Stoat, 796 



Stomach, 6, 14, 25, 26, 29, 107, 167, 183, 

 138, 185, 529, 756 



cardiac, 29, 638 



curvatures of, 29 



folds of, 29 



fundus of, 29 



of mammals, 638, 639 



pyloric, 29, 628 



