INDEX. 



31 



Reptilhi, corpuscles of, 99, 65. 

 distribution of. 377. 

 lungs of, 118, 84. 

 mouth of, 61. 

 prehension of, 61. 

 scales of, 135. 

 teeth of, 67. 

 voice of, 189. 

 see Crocodile, Lizard, Snake, 



Turtle. 

 Respiration, 111. 



in Crustacea, 114. 

 in Echiuoderms, 112. 

 in Fishes, 114. 

 in Insects, 114. 

 " in Mollusks, 113. 



" rate of, 120. 



" in Vertebrates, 117. 



" in Worms, 113. 



Rete muco^um, 128. 

 Reticulum, ,88, 56. 

 Retina, 183, 157, 158. 

 Rhen, 327. 



Rhinoceros, 136, 164, 361, 129, 344. 

 Rhizopoda, 240, 15, 184, 185. 



' skeleton of, 129. 



Rodentia, 345, 835, 336, 337. 



teeth of, 71, 335, 336. 

 Rostrum, 2S2. 

 Rotifera, 266, 219. 



" jaws of, 64. 

 Rudimentary organs, 207. 

 Rumen, 88, 56. 

 Ruminantia, 352. 



stomach of, 88, 56. 

 " see Ox, Ungulata. 



SAOBUM, 146. 

 Salamander, 318, 296. 



metamorphosis of, 174. 

 Saliva, function of, 93. 

 Salivary Glands, 122. 

 Salmon, 31 (J, 283, 285. 

 Sand-flea, 284, 252. 

 Sandpiper, 332, 312. 

 Sarcode, 281. 

 Sarcolemma, 39, 204. 

 Sauropsida, 308. 

 Saururae, 394. 



Scales of Butterflies, 300, 271, 272. 

 " of Fishes and Reptiles, 135, 102, 



283. 

 Scallop, eye of, 181, 153. 



" shell of, 272. 

 Scapular Arch, 146. 

 Scarabaeas, 299. 

 Scarf-skin, 128, 386. 

 Sclerobaae, 130. 

 Sclerodcrm, 130. 

 Sclerotic, 183, 157. 

 Scolopendra, 287, 259. 



Scorpion, 53, 2SS. 259. 

 " month of, GO. 

 " respiration in, 116. 

 Sea-anemone, see Polyp. 

 Sea-blubber, 249. 

 Sea-butterfly, 273, 229. 

 Sea-fan, 256, 208. 

 Sea-hare, 274. 

 Seal, 355, 128, 181. 

 Sea-lemon, 274. 

 Sea-lily, 258, 211. 

 Sea-lion, 355, 350. 

 Sea-pen, 208. 

 Sea-slug, 262, 274, 215. 

 Sea-urchin, 26% 210, 214. 



" absorption by, 94. 



" alimentary canal of, 76, 39. 



" anatomy of, 39. ^ 

 " circulation in, JOS. 

 digestion in, 92. 

 growth of, 214*. , 

 mode of feeding, 52 

 mouth of, 56. 

 respiration in, 112. 

 shell of, 28. 

 skeleton oC,JUfc, 9fc 

 spines of, 130, 9V. 

 teeth of, 64*, 28. 

 Sea-worm, 2G8, 17, 223. 

 Secretion, 121. 



" see Gland. 

 Secretory organs, 122. 

 Segmentation of egg, 197, 165. 

 Self-division, 191, 160. 

 Sensation, 176. 

 Sense of hearius, 178. 

 " of sight, 180. 

 " of smell, 177. 

 " of taste, 177. 

 " of touch, 176. 

 Sense-organs, see Sense. 



" development of, 201 



Sensibility, 1T6. 

 Sepia, 280, 248. 

 Serpent, see Snake. 

 Sertularia, 247, 192. 

 Serum, 98. 

 Setae, 269. 



Setophaga, 340, 325. 

 Seventeen-year locust, 297, 266. 

 Shark, 67, 314, 65, 287. 

 4 eggs of, 195, 164. 

 1 gills of, 114, 287. 

 skeleton of, 137, 145, 146. 

 Shells of Crustacea, 131. 

 1 of Ecbiuoderras, 130. 

 ' of Mollusks, 133. 

 Shoulder-girdle, 146. 

 Shrew, 63, 346, 338. 

 Shrimp, 286. 

 Sight, of Arthropods, 181. 



