Muscles, sound in 496 



stimulated, how? ..494 



striated 492 



in fish 494 



tension of. ..499 



tetanus 496 



varieties of 491 



Muscular sense 431, 633 



Music of birds 471 



Musical mice 472 



muscles 496 



Must *217 



Mushrooms, agarics. 201 



classification 201 



in carboniferous. 83 



Myrinecobius 86 



Myrosin. 229 



Myxomycetes, moulds 213 



Names of fissures 590 



of convolutions. 590 



Narwhal, horn of 155 



Nasturtium. 107 



Nates, human only 5 



Nates, optic lobes 557 



NATURAL SELECTION OF 



SPECIES 105 



Nausea, a type of repul- 

 sion 1004 



Navicella, dev. from neri- 



tina 136 



Nebular theory 1015 



Neptune, discovery of...-850 



Nerve current 505 



Nerve fibres 502 



connected with mus- 

 cles. 507 



size of. 509 



vitality of. 507 



Nerve, poison of. 507 



Nerves, afferent 490 



anomalies in. 289 



-cranial. *542, 545 



development of 277 



effect of mind on. . .549 



efferent 490 



of fishes 580 



of mammals. 602 



sympathetic 545 



Nervous action in plants 550 



NERVOUS SYSTEM 534 



development of 42 



crawfish 538 



frog 539 



man 540 



mantis 537 



pond muscle .536 



primitive worm 59 



sea squirt 535 



star fish 534 



sympathetic. 534, 545 



worm 535 



Neurilemma. 501 



Newton's illusion 819 



rings 390 



Niagara, age of 66 



Nicol prism 393 



Nipples, extra -289 



Norwegian flimmer ball. 35 



Notochord * 



Nott and Gliddon, Types 



of Mankind ' 



Nucleated cells. 



Nucleus amygdale. 564 



caudatus. 560 



lenticularis 560 



pontis 561 



Nullipores *73 



Numeration by digits 913 



Nummulites, money 



stones 92 



Index. 



Occipital condyles *51 



Ocellus of beetle 446 



Did, termination, similar 

 to, as ovoid, egg-like 

 Olfactory grooves *25 



lobe 474 



in fishes. 579 



tract of cerebrum 602 



Olivary body *553 



Onchidium, eye of 449 



touch organ 433 



Onomatopoeia. 906, 918 



Ophthalmia 264 



Opium, effect of 823 



Opossum. 102 



Optic chiasm 602 



- lobes 574,628 



amblyopsis 576 



functions 628 



nerve, atrophy of 744 



- fishes. 579 



thalamus, bed 558, 628 



fishes. 577 



lesions of. 631 



sensory organ. 629 



Optic tracts, scheme of -678 



Organ of smell 661 



ORGANIC FERMENTS. 213 



8rganic remains 80 

 rgans of brain 647 



in cat. 655 



come and go 685 



connected. 695 



co-operate 684 



indog-.- 656 



formed by habit 696 



hereditary 697 



instruments of motion 

 not qualities 647 



man 658 



monkey 657 



on mesial face i 



reflect the en vironm'nt 685 

 Organs, standard 689 



tone of 683 



ORIGIN OF SEX. 294 



Originality - 852 



Ornithorhynchus, bird- 

 beak 52 



none fossil 99 



one ovary not good. 156 



young of 585 



Osmosis 172 



OSSEOUS SYSTEM 156 



development of 25 



by habit 164 



soft in infants 158 



Ostracoid, like an oyster *77 



an old stock 253 



OUR RELATIONS. 2 



Ova, passive. 311, 312 



Ovary, egg-organ 25 



Owen, Comparative An- 

 atomy. 572 



on contractility 486 



Owl, no color sense 445 



Oysters. 90 



Ozone in muscle action. .497 



Pa and Ma 912 



Pacinian body 424 



Packard, Guide to Study 



of Insects 447 



Pain due to discord 711 



Pallium, cloak. *76 



Pancreatic juice. 231 



Papillae, birds 434 



frog 434 



Papillon on chlorophyl ... 181 



on grafting 364 



on odor 475 



1063 



Papillon 011 taste 484 



Paralysis. 742 



Paramecirim 247, 249 



Parasites in dogs 191 



mice 190 



competition of 193 



PARASITISM AND SOCIAL 



RECIPROCITY. 183 



essential to progress ... 199 



Parrots, right-legged. 957 



Parthenogenesis *13 



of plant louse 127 



Pasteur, quoted 235, 237 



on vibrio 223 



Patriotism, duty of 725 



Pea sausage 412 



Pearls .-168 



Pebrine 257 



Pectoral arch of bird. 160 



man -.158 



frog, lizzard 160 



monotremes 161 



mud fishes. 160 



Peduncles, feet. 556, 561 



of cerebellum 555 



cerebrum - 555 



pineal gland 558 



Pellicle, little skin 246 



Pelvic arch 165 



fishes. 170 



megatherium 166 



Penguin 119 



Penicillium, mould 205 



Pepper, System of medi- 

 cine 167 



Pepsin 226 



PERIODICITY 121 



lost in even climates. 127 

 Peronospora on potato 203 

 Personality, or ego 931 



conscious, the 932 



diseases of 939 



double-- 960 



feeling of. 933 



made by environment 937 



Peruvian heads 698 



Petroleums 352 



Phantasms of the Living 820, 



891. 



Phillyrin 229 



PHYSIOLOGY OF NERVES 



AND NERVE CELLS. 501 



PHYSIOLOGY OF THE MUS- 

 CLES 486 



Photography, processes of 410 

 Phrenology - 639 



chart of 640 



erroneous in principle. 646 

 Pigeons, selection of 117 



changes in 118 



Pigments of the skin 419 



Pigment spot, euglena. . . 448 



Pineal eye 637 



old sight organ 638 



in reptiles. 639 



Pineal gland 561, 577 



sea t of soul" 637 



history of 637 



Pisiform bone 291 



Pitcher plant 521 



Pituitary gland. 562 



membrane (smell). . 20 

 Placenta. *19, 23 



development of. 43 



deciduate,discoidal,in- 

 deciduate - 44 



first occurrence in Ter- 

 tiary age 93 



Planchette. 838 



Plante, Gaston, on elec- 

 tricity 330, 339 



Plants, brain of 551 



classification 79 



first on land 80 



sensitive to light 549 



