INDEX. 



527 



Ratitae, 18. 



limb-bones pf, 159. 

 Rat-mole, 16. 

 Rattlesnake, larynx of, 475. 



scales of, 246. 



skull of, 104. 



spine of, 46. 



tail of, 247. 



teeth of, 270. 

 Raven, trachea of, 470. 

 Rays, 20. 



brain of, 379, 382, 384. 



breathing organs of, 466. 



ear of, 394- 



exo-skeleton of, 277. 



gills of, 476. 



limb-bones of, 152. 



liver of, 454- 



muscles of, 363. 



nerves of, 401. 



skull of, 129. 



spine of, 53. 



teeth of, 269, 270. 

 Really compound teeth, 276. 

 Receptaoulum chyli, 430 432. 

 Recti muscles, 285. 

 Rectum, 442, 446, 453. 

 Rectus abdominis muscle, 298, 315, 



339- 

 capitis anticus muscle, 288, 313, 



3?7- 



capitis posticus muscle, 291, 323. 

 femoris muscle, 302, 303, 318, 345, 



34 6 - 



lateralis muscle, 288, 317. 

 Recurrent nerve, 398. 



laryngeal nerve, 429. 

 Regions of the skull, 77. 

 Reindeer, horns of, 279. 

 Relation of scutes to scales, 241. 

 Relative importance of axial and ap- 



pendicular skeletons, 234. 

 Renal artery, 412, 414, 480. 



organs, 481. 

 Rennet, 443. 

 Reptiles, alimentary canal of, 447. 



brain of, 382. 



circulation of, 425, 427. 



cutaneous glands of, 487. 



f lands of, 438. 

 eart of, 410. 

 limb-bones of, 154, 167, 169, 170, 



175, 188, 190, 191, 102, 193, 195, 



196, 206. 



lymphatics of, 432. 

 mouth of, 435. 

 muscles of, 313, 314, 318. 323, 324, 



339 34 2 > 344? 34 8 349. 358, 359, 



363- 



pancreas of, 450. 

 peritoneum of, 458. 

 skin of, 238. 



Reptiles, skull of, 101, 103, 113, 117, 

 120, 121, 127, 131, i3~5, 139, 141. 



spine of, 52, 64. 



their differences from man, 492. 



tongue of, 440. 



trachea of, 469. 



ureters of, 482. 

 Reptilia, 15, 18. 

 Respiration, 461. 



aquatic, 475. 

 Restiform bodies, 382. 

 Restiform tracts, 367. 

 Rete Malpighii, 486. 



mirabile, 420 422, 425, 466. 

 Reticulum of Sheep's stomach, 443, 



444- 



Retina, 387. 



Retractors (muscles), 282. 

 Retrahentes auriculam muscle, 283, 

 284. 



costarum muscle, 340. 

 Rhamphorhynchus, 19. 

 Rhea, 18. 



limb-bones of, 183, 193, 205, 212. 



spine of, 39, 55. 

 Rhinoceros, 16. 



cutaneous glands of, 487. 



horn of, 245. 



limb-bones of, 173, 174, 196, 197, 



211, 212. 



liver of, 456. 



skull of, 118, 140. 



skin of, 237. 



spine of, 58, 71. 

 Rhinolophus, 16. 



nasal organs of, 380. 

 Rhomboideus muscle, 289, 290, 321, 



328. 

 Rhynchocyon (an Insectivore), 208. 



stomach of, 445. 



Rhythmical contractility, 427, 432. 

 Ribs, 35, 67, 216, 217, 221, 223, 242. 



expanded, 239. 

 Right auricle, 407, 408. 



lung, 407. 



ventricle, 407, 408. 

 Right Whale, mouth of, 435. 



spine of, 53, 66. 

 Ring digit, 152. 

 River Hog, teeth of, 275. 

 Rodentia, 16. 

 Rodents, bronchi of, 469. 



limb-bones of, 190. 



mammary glands of, 490. 



mouth of, 436. 



muscles of, 3091 



skull of, 99, 115, 122, 160. 



spleen of, 484. 



teeth of, 263. 

 Root of aorta, 412. 

 Roots of nerves, 399. 



of spinal nerves, 385. 



