634 



INDEX 



Pyloric division and . valve, of 



stomach, see Stomach" 

 Pyramid of kidney, 538 

 Pyrenoid, 243, 249 



R 



RABBIT : general characters, 

 482, 542 ; skeleton, 487, 542 ; 

 muscles and body-wall, 505, 

 543, 544, 549, 552, 556; 

 coelome, 506, 545, 550; di- 

 gestive organs, 507, 545-547 ; 

 respiratory and vocal organs, 

 517, 544, 551, 554 ; circu- 

 latory organs, 520, 544, 546- 

 547, 550-554 ; nervous system, 

 528, 544, 549, 554 ; sense- 

 organs, 533, 552-556 ; urino- 

 genital organs, 537, 545, 548; 

 development, 541, 549, 585 



Racemose gland, 133 



Radial canals, see Canal 



Radial symmetry, 296 



Radio-ulna, 49 



Radius, 50, 501 



Rana esculenta, 216 



Rana temporaria, see Frog 



Ranidae, 218 



Reagents, hardening, preserving, 

 mounting, and staining, 135 



Recapitulation, theory of, 224 



Rectal gland, 447, 540 



Rectum, 23 ; and see Enteric 

 canal 



Reducing division, 568, 570 



Reflex action, 169, 319 



Regeneration, 268, 307, 345 



Renal portal system, see Portal 

 system 



Replacement of organs, 209 



Reproduction, 8 ; and see under 

 various types, and also Asexual 

 reproduction 



Reproductive organs, 23, 25, 

 193. 37. 320^345, 382, 409, 

 421, 425, 467, 538, 603 



Reptilia, 219, 418 



Reservoir of contractile vacuole, 



254 



Respiration, 141, 143, 235, 339, 

 374, 448, 517 



Respiratory movements, 7, 142, 

 375. 520 



Retina, 183, 184, 353, 556 



Retinula, 380 



Rhabdome, 380 



Rhabdonema, 153 



Rhinencephalon, 590 



Rhizopoda, 292 



Ribs, 486, 498, 500 



Rocks, sedimentary and strati- 

 fied, 223 



Rodentia, 542 



Rods and cones, 185 



Rostrum, 363, 436 



Rudiment, often used for Ves- 

 tige, (q. v.) 



S 



Sacculus, 187 



Saccuius rotundus, 515,3^7 



Sacrum, 38, 499 



Salamander, 218 



Salivary glands, see Glands 



Saprophytic nutrition, 256, 257 



Sarcolemma, 113 



Scales, 430, 433 



Scapula, 47, 443, 500 



Schizocoele, 588 



Sclerite, 390 



Sclerotic, 182, 534, 555 



Scrotal sac, 487, 538, 548 



Scyllium, see Dogfish 



Sebaceous glands, see Glands 



Section-cutting, directions for, 



126, 138 

 Secretion, 130 

 Segment, see Metamere, Podo- 



mere 

 Segmentation-cavity, 200, 577, 



581. 583 



Segmentation of oosperm, 198, 

 200, 212, 308, 320, 349. 383. 

 410, 470, 574, 577, 581, 582, 

 585 



