ee a Se 
INDEX. 
In of Vertebrata, 73, 483—485 
Gs eanmaies of, 695, 717; corre- 
of, with development of the 
, 452, 692, 718—720. 
of aliment 
through, 215; digestion continued in, 
213, 214; relative length of, 213. 
— Worms, 105; development of, 
742, 743. 
92; absorption in, 225; 
nature of circulating fluid in, 225, 235 ; 
heat of, 404; skeletons of, 598, 599. 
Involuntary movements, 589, 590. 
Tris, 533, 534. 
Iron, a constituent of animal bodies, 166, 
167; of red corpuscles of blood, 232. 
Ivory, structure and composition of, 54. 
Tulus, 103. 
J. 
Jaw, motion of, in Quadrupeds, 138; in 
Man, 189; articulation of, 623. 
Jelly-fish, 120. 
Joints, 603; dislocation of, 604. 
K. 
Kangaroo, leaping powers of, 661; skele- 
ton of, 661. 
Kidneys, structure of, 357, 358, 368, 369 ; 
purposes of their excretion, 346—348, 
367. 
L. 
Labyrinth of ear, 519. 
Lachrymal apparatus, 540. 
gland, 540. 
— __ sac, 540. 
Lacteals, 217, 218. 
Lactic acid, 349, 367. 
Lacunze of bone, 50. 
Lamprey, 317; chorda dorsalis of, 53, 
Larva, of Cirthipeds, 749; of Crab, 101; 
of Echinodermata, 741; of Entozoa, 
err ; of Insects,97,141,745 ; of Medusa, 
40. 
Larynx, 192; structure of, 680, 681; 
action of, 682—634 ; in Birds, 685. 
Laughing, act of, 341. 
Leaping, 661, 662. 
Leech, 104, 105. 
Leg, bones and muscles of, 647. 
Lepidosiren, 81; blood-dises of, 230; 
respiration of, 324. 
Leverage of bones, 612—615. 
Life, maintained by continual change, 
68. 
Ligaments, structure of, 29. 
— vocal, 681—684 
599 
Light, emitted by eng senenneee 
402; by dead bodies, 402 
—— propagation of, 526; refraction of 
527—532. 
Lime, amount of, in bones, 49; in teeth, 
54; in egg-shell, 169; in shells of 
a 169; in shells of 
170. 
— sources of, in animal bodies, 166— 
Liquor sanguinis, 229, a 236—241, 385, 
387, 391. 
Lithic acid, 346, 348, 367. 
formation of sugar by, 366. 
yits excretion, 346, 350. 
In tinetive characters of, 
1 
Lizar™™™ana, Xt. narative powers of, 
per ee, 712, 714, rn. in, 292. 
Lock-jaw, - We 
Locomoti -* ments of, 471; 
ion, enorte by 
organs of, 596. 
Locusts, eaeis of, 146; multiplication 
of prevented, 149. 
Long-sighted eyes, 552, 553. 
Luminousness, ae ae uses of, 
401; from decomposition, 402. 
rudimentary in Fishes, 324; 
Reptiles, 325; im Birds, 326, 327; i 
326—333, 
pie 2 ba 220. 
Madrepore, 127. 
Malapterurus, electric, 419, 422. 
Malpighian bodies of kidney, 369 
agree” general structure of, 77; di- 
tive apparatus in, 197—199; blood- 
in, 229; circulation i in, 281, 282; 
respiration in, ; heat of, 407; 
nervous system of, 456; : reproduction 
in, 756, 761. 
structure of, 376. 
Man, food of, 163; stomach of, 197; 
heart of, 256, 257; arterial system of, 
258; quantity of air required by, 334 
—337 ; reproduction of lost parts in, 
390; repair of injuries in, 391—393; 
heat of, 407; nervous system of, 456— 
462; peculiar characters of soul of, 
Mantis, actions of, 444. 
Mantle of Seer ow 107. 
Marmot, hybernation of, 309. 
Marrow of t bones, 49. 
—— Spinal (see Spinal Cord). 
