INDEX. 



499 



Navel arteries, i. 400 



cord, i. 384 ; ii. 168 



mesentery arteries, i. 395 



veins, i. 399 



veins, i. 399 



vesicle, i. 337, 377 



Neck cnrvature, i. 369 



marrow, ii. 211, 222 



vertebrae, ii. 281 



Nerve-cells, i. 126 



system, ii. 211, 232 



Nenro-mnscnlar cells, ii. 232, 236 

 Nictitating membrane, ii. 259 

 Nipples of milk-glands, ii. 202 

 Nipple-less animals, ii. 146, 204 

 Nose, i. 374; ii. 247 



of Ape, ii. 175 



cavities, ii. 245 



flaps, ii. 243 



furrow, ii. 244 



grooves, ii. 244 



processes, ii. 242 



roofs, ii. 242 



Notaspis, i. 297 

 Nucleolus, i. 133 

 Nucleus, i. 125 

 Nutrition, i. 158 

 Nutritive yelk, i. 216 



(Ekologt, i. 114 

 Oken, Lorenz, i. 49 

 Olfactory grooves, ii. 240 



nerve, ii. 239 



organ, ii. 239 



Ontogenesis (evolution of the germ), 



i. 12 

 Ontogenetic fission of the layers, 

 i. 238 



unity, i. 366 



Ontogeny, i. 5 

 Oophora, ii- 398, 429 

 Optic nerve, ii. 250 

 Orang-outang, ii. 178, 181 

 Orchides, ii. 399, 429 

 Organic history of the earth, ii. 7 

 Organisms without organs, ii. 45 

 Organogeny, i. 24 

 Organology, ii. 192 

 Organophyly, i 24 



Organ-systems, age of, ii. 357, 367 



human, ii. 194 



Original cleavage, i. 198, 241 

 Ornithodelphia, ii. 145, 187 

 Omithorhynchus, ii. 147 

 Omithostoma, ii. 147, 187 

 Os ilium, ii. 278, 304 

 Os ischii, ii. 278, 304 

 Os pubis, ii. 278, 304 

 Outer skin, ii. 200, 232 

 Ovary, ii. 398, 430 



plate, ii. 401 



Oviduct, ii. 403, 429 

 Ovococcus, i. 183 

 Ovoplasma, i. 183 

 Ovula holoblasta, i. 215, 241 



meroblasta, i. 216, 241 



Ovnlists, i. 37 

 Ovulum, i. 171, 183 



Pachycardia, i. 120 

 Palate, ii. 330 



roof, ii. 330 



soft, ii. 330 



Palaeolithic epoch, ii. 10, 19 

 Palaeontology,, i. 106 

 Palaeozic periods, ii. 12, 13 

 Palingenesis, i. 10 

 Palingenetic cleavage, i. 211 

 Palingeny, i. 11 

 Pancreas, ii. 330, 343 

 Pander, Christian, i. 51 

 Paradise, ii. 183 

 Parallelism in evolution, ii. 70 

 Parent-cell, i. 176 



kernel, i. 176 



Parovarium, ii. 41 7, 431 

 Parthenogenesis, i. 40, 170 

 Partial cleavage, i. 216, 240 



of bi rd's egg, i. 224 



Pastrana, Julia, i. 374 

 Pedigree, i. 112 



■ of animals, ii. 93 



Apes, ii. 189 



cells, i. 467 



Indo- Germanic Ian. 



guages, ii. 23 



Mammals, ii. 188 



man, ii. 23 



