INDEX 



729 



Rhinoceros, 28 

 Rhodesian, 32, 33, 225 

 "Rhomboid," 174 

 Rhomboideus m., major, 281 



minor, 281 

 Rhombomere(s), 549, 620, 621 

 Rhynchocephalia, 26 

 Ribs, 210, 211, 211, 342, 610 



evolution of, 212 



floating, 211 



true, 212 

 Rickets, 179 

 Ring cartilage, 236 

 Risorius m., 274 

 Ritter, 660, 661 



Rod and cone cells, 137, 582, 586, 586 

 Rodents, 28, 31, 190 

 Rohon-Beard cells, 516, 556 

 Romanes, 241 

 Romer, 222, 223, 224, 247 

 Roof plate, 542 

 Root, 28, 193, 303 

 Rotator m., 276 

 Rotifera, 2, 4, 9, 10, 30 

 Ruber (red) nucleus, 511, 520 

 Rubrospinal tract, 520 

 Rumen, 312 

 Ruminauts, 312 

 Running birds, 26 



Saber-toothed tiger, 190 



Sac, 25 



Sacculation, 315 



Sacculus, 596, 597, 600, 601, 603, 604 



Saccus endolymphaticus, 601 



vasculosus, 487, 490, 507 

 Sacral artery, 377, 393 



canal, 209 



vein, 397 



vertebrae, 204, 239, 241, 246 

 Sacro-coccygeal m., 277 



spinalis m., 277 

 Sacrum, 206, 209, 246, 251 

 Sagitta, 9 



Saint Hilaire, 630, 642 

 Salamander, 25, 49, 51, 57 

 Salivary glands, 7, 12, 301 

 Salmon, 44, 46, 51 

 Samoyads of Siberia, 178 

 Sand-burrowing, 20 



Santorini's duct, 326, 327 

 Saphenous artery, 379 



vein, 397 

 Sarcolemma, 144, 523 

 Sarcoplasm, 143 



Sartorius m. — "tailor muscle," 283 

 Sauripterus, 244 



Sauropsida, 25, 31, 58, 69, 70, 77 

 Savi, vesicles of, 598 

 Scala media, 600 



tympani, 597, 601, 602 



vestibuli, 597, 601, 602 

 Scale(s), 23, 25, 26, 169, 170, 170, 171, 177 



placoid, 169, 170, 177, 183, 184, 185 

 Scaleni, anterior muscle, 277 



middle, 277 



posterior, 277 

 Scallop (pecten), 13 

 Scaly skin, 24, 31 

 Scapula, 238, 239, 240, 247, 248 

 Schwann's sheath, 146, 149 

 Sclerotic (sclera), 588 

 Sclerotome, 95, 102, 209, 615 

 Scomberomorus, 24 

 Scorpions, 15, 651 

 Scrotal sac, 412, 443, 449 



swellings, 444 

 Scrotum, 28, 415, 426, 443, 443, 444 

 Scutes, 218 

 Scymnosuchus, 231 

 Sea-anemone, 5, 6 



-cucumber, 10 



-horse (hippocampus), 47, 57 



-lily, 10 



-scorpions, 643 



-squirt, 18 



-urchin, 10 



water, 10, 52, 348 

 Seal, 28 



Sebaceous glands, 176, 180 

 Secondary sense cell, 469 

 Secretin, 447 

 Secretion, 100, 165 

 Secretory cells, 90 

 Sedgwick, 300, 636 

 Sedimentary, 9 

 Seeliger, 19 

 Segment(s), 11, 616 



head, 607, 609, 610, 614, 623, 624 



trunk, 607, 610 

 Segmental tubules, 631 



