INDEX, 



827 



Senses of animals, nerves of the, 



30, 31. 

 Serpents (Lat. serpens creeping), 



osteology of, 75 et seq. ; skeleton 



of the cobra, 74 ; structure of the 



skull of, 76; the python, ib. ; 



poisonous, skull of, 84 

 Sharks, their adaptation to aquatic 



life, 62; teeth of, 243; osteo- 



dentine of, 247 

 Sheat-fish, teeth of the, 242 

 Sheep's-head fish, teeth of the, 243 

 Sight, organ of, 31 



SKELETON (Gr, skeletos a dried 

 body), on the principal forms of 

 the, \Z et seq. ; composition and 

 classification of the bones consti- 

 tuting the, 14, 15 ; the dermo 

 and neuro skeletons, 16, 17; 

 growth of bones, 21, 22, 23; 

 structure of bones in diflFerent 

 classes, 24 ; its segmental compo- 

 sition, 26 ; vertebras of the, 28, 

 33 ; archetype of the, 29, 30 ; of 

 the fish, 37 et seq. ; general and 

 special names of the bones of the, 

 49, 50 ; principal forms of the, in 

 the class Reptilia, 64 ; of the 

 frog, 65 et seq. ; the serpent tribe, 

 75; the lizard, 91 ; the crocodile, 

 95 et seq. ; of Chelonian Reptiles, 

 122; of birds, 134; of the class 

 Mammalia, 151 ; of the Cetacea, 

 158; of the seal and walrus, 158, 

 159; of hoofed quadrupeds, 162; 

 the horse, 163 ; the rhinoceros, 

 167; the giraffe, 170; of herbi- 

 vorous quadrupeds, 1 72 ; the ca- 

 mel, 1 74 ; the hippopotamus, 1 78 ; 

 the hog tribe, 180 ; even-toed 

 hoofed beasts, i6. ; nature of limbs, 

 183; of theprotopterus, ib.; limbs 

 of the amphiuma, the proteus, the 

 horse, the ox, the rhinoceros, the 

 hippopotamus, the elephant, 184, 

 185; of the feet, 1 85 ; of the sloth, 

 188 ; of the ant-eater, 193 ; of the 

 mole, 194; of the bat, 199; of the 

 carnivorous mammalia, 200; of 

 the lion, 201 ; of the kangaroo, 

 li05 ; of the quadrumana, 209 ; 



of the ape tribe, and of man, 211 : 

 terms in osteology, 221 ; facial 

 angle, 222 ; progressive expansion 

 of "the cranium, 222, 223; Aus- 

 tralian and European skulls, 224 ; 

 retrospect of the various forms of 

 the, 225 



Skull, the four upper or anterior 

 segments of the osseous system, 

 30 ; various segments of, in fishes, 

 40 et seq. ; structure of, in ser- 

 pents, 76; of the python, 78; of 

 the boa-constrictor, 81 ; of poi- 

 sonous serpents, 84 ; of the lizard, 

 92 ; of the crocodile, 103 et seq. ; 

 of the sloth, 193; modifications 

 in the skull of man, 216 



Skulls of different animals, 222, 

 223 ; of an Australian and a Eu- 

 ropean, 224 



Sloth, skeleton of the, 188 ; extinct 

 races of the, 188; its habits and 

 aptitudes, 188, 189; limbs and 

 skull of the, 192; dentition of 

 the, 193 



Smell, sense of organ of, 31 



Snakes, poisonous, teeth of the, 257 



Sparoids (Gr. sjmros a sea-fish, and 

 eidos resemblance), dentine of the, 

 247 



Sphyrtena (Gr, the hammer-fish), 

 teeth of the, 244 ; dentine of 

 the, 247; formidable dentition of 

 the, 247 



Spider-monkey, dentition of the, 305. 



Si3lanchno-ske eton (Gr. splanchna 

 the bowels), 16; its various parts 

 — the petrosal, the sclerotal, the 

 turbinal, the branchial, and the 

 dental, 51 



Splint-bone, one of the carpal bones, 

 186 



Spuriae (Lat. spurius illegitimate), 

 the bastard feathers of birds, 144 



Sting- ray, jaws and teeth of the, 247 



Sturgeon, skeleton of the, 15, 10, 

 17; its habits, 18 



Suborbital bones (Lat. sub and or- 

 bila under the orbit), 49 



Superorbital bones (Lat. super and 

 orbita above the orbit) of fishes, 

 119 



