600 



INDEX. 



Mastication, 171, 174189. 



Mastodon, teeth of, 182. 



Measles of pork, 742. 



Medulla oblongata, 450, 460. 



Medusa, 120 ; development of, 125, 740 ; 

 circulation in, 296; rhythmical move- 

 ments of, 578; gemmation of, 726. 



Membrana Tympani, 516. 



Membrane, basement or primary, 31. 



Membranes, fibrous, 29 ; serous, 28, 43 ; 

 mucous, 39 41. 



Mesentery, 217. 



Mesenteric glands, 217. 



Metamorphosis of Frog tribe, 86, 87. 



Insects, 97, 745. 



Crustacea, 101. 



Milk, different classes of aliment con- 

 tained in, 158; chemical composition 

 of, 377 ; influence of mind on, 353. 



Milk-teeth, 184. 



Mineral ingredients required by Ani- 

 mals, 166170. 



Mitral valve, 272. 



Molar teeth, 181183. 



MOLLUSCA, general characters of, 106 

 110; circulation in, 290; respiration 

 in, 316, 320 ; structure of liver in, 356; 

 of kidneys, 358 ; luminousness of, 396 ; 

 nervous system of, 435 439 ; develop- 

 ment of, 752. 



Monkey, interior of, 77. 



Monstrosities by excess, 729. 



Mortality under different circumstances, 

 Introd. 



Mucous membranes, general structure 

 of, 3941. 



Mulberry mass of ovum, 736, 737. 



Muscles, general purposes of, 10 ; general 

 mode of action of, 605 615; of eye, 

 538; of face, 624; of trunk, 637; of 

 arm, 638, 640 ; of hand, 641 ; of leg, 

 646,647; of foot, 648. 



Muscular Contraction, 58, 59, 579; con- 

 ditions of, 591; stimuli to, 580586; 

 influence of electricity on, 583 585 ; 

 relation of, to nervous power, 586 

 588, 592, 593; voluntary and involun- 

 tary, 589, 590; energy of, 592594; 

 use of, in organic functions, 595 ; in 

 locomotion, 605615. 



Muscular Fibre, structure of, 55 57 ; 

 contraction of, 58; alternates with re- 

 laxation, 58, 59. 



Musk, odour of, 504. 



Mygale, nest of, 700. 



MYKIAPODA, general structure of, 103; 

 nervous system of, 440. 



N. 



Nails, structure of, 38. 

 Nais, spontaneous fission of, 727. 

 Near-sighted eyes, 552, 553. 

 Necrophorus, instinct of, 703. 

 Negro, skin of, 375. 

 Nemestrina, trunk of, 173. 



Nepa, tracheal system of, 322. 



Nereis, 104, 314, 727. 



Nerita, palate of, 189. 



NERVOUS SYSTEM, general structure of, 

 483; general objects of, 9, 10, 429 

 432; form of, in Vertebrata, 72; in 

 Articulata, 94; in Mollusca, 110; in 

 Radiata, 116. 



particular structure 



and actions of, in Radiata, 434; in 

 Mollusca, 435439 ; in Articulata, 440 

 446; in highest Invertebrata, 447, 

 448; in Vertebrata, 449 452; in Fishes, 

 453; in Reptiles, 454; in Birds, 455; 

 in Mammalia, 456; in Man, 457 462. 



Sympathetic, 461,462. 



the instrument of the 



mind, 427; influence of, on secretion, 

 190, 353 ; on muscular contraction, 

 584, 585 ; on animal heat, 415. 



Nervous Tissue, white or fibrous sub- 

 stance of, 62, 63 ; distribution of, 63 ; 

 grey or vesicular substance of, 61. 



Nests of Insects and Birds, 700705, 

 710714. 



Newt, 87. 



Nictitating membrane, 540. 



Nitrogen, absorption and exhalation of, 

 302. 



Non-azotized constituents of food, 154; 

 destination of, 155157, 162165 ; 

 effects of excess of, 350. 



Nose, structure of, 506, 507; common 

 sensibility of, 508. 



Nurse-bees, 411. 



Nurses of Cercariae, 743. 



NUTRITION of tissues, increased by use, 

 242, 589; dependent on liquor san- 

 guinis, 240, 241, 385; mode of, in dif- 

 ferent tissues, 384, 385 ; share of blood 

 in, 387 ; share of blood-vessels in. 388; 

 share of tissues in, 387 ; imperfect 

 forms of, 386. 



O. 



Oak, caterpillars supported on, 145. 



Octopus, 121. 



Odours, 504, 505. 



(Esophagus, 192. 



Oleaginous principles, 153; destination 



of, 154157, 162. 

 Olfactive ganglia, 453 456, 458. 



nerve, 507. 



Optic ganglia, 453456, 458. 



nerve, 459. 

 Organic Life, 6, 425, 426; nervous system 



of, 461. 



Functions, relation of, to ani- 

 mal, 425 427; influenced by emo- 

 tions, 461. 



Organized bodies, distinctive form of, 

 1 ; structure of, 2 ; consistence of, 3 ; 

 chemical constitution of, 4; actions 

 of, 5. 



