312 



INDEX 



Knowledge, value of, 150, 239, 

 343 



Law, Divine, 345 



Locomotion and nervous develop- 

 ment, 61. See also Muscular 

 System 



Love, 139, 180, 343 



Magosph^ra, 40 



Mammals, 85, 93 ; oviparous, 86 ; 

 marsupial, 87 ; placental, 88 ; 

 temporarily surpassed by rep- 

 tiles, 195 



Man, 310, 319 ; anatomical char- 

 acteristics, 93 ; mental and 

 moral characteristics, 99, 113, 

 147, 150, 319, 343 ; relation to 

 nature, " 310 ; animal, 313 ; 

 moral, 330; religious, 334; 

 hero, 337 ; future, 338, 331 



Materialism, 165 



Mesoderm, 45 



Mind, 115, 144 ; amoeba, 33 



Mollusks, 58, 106 



Motives, 136, 148 ; sequence of, 

 143 



Muscular system, 309 ; hydra, 

 38 ; worms, 63 ; insects, 68 ; 

 vertebrates, 73, 108, 316 



Nageli, 388 



Natural selection, 13, 153, 378 



Nature, 9, 38 



Neo-Darwinians and Neo-Lam- 

 arckians, 396 



Nervous system, 103 ; hydra, 38 ; 

 turbellaria, 48 ; mollusks, 59 ; 

 annelids, 63 ; insects, 69 ; ver- 

 tebrates, 74 



Notochord, 74, 79 



Ontogenesis, 36 



Phylogenesis, 36, 100, 310 

 Placenta, 88 



Prayer, 359 



Primates, 91 



Productiveness and prospective- 



ness, 193, 300, 303 

 Protoplasm, 33, 34 

 Protozoa, 39 



Reflex action, 135, 135, 146 



Religion, 166, 334, 363 



Reproduction, 309; amoeba, 33, 

 35; hydra, 38; magosphaera, 

 40 ; volvox, 41 ; turbellaria, 

 50 ; annelids, 63 ; insects, 66 ; 

 vertebrates, 73. See also Size 

 and Surface and Mass 



Respiration, amoeba, 35 ; worms, 

 48, 63 ; insects, 66 ; verte- 

 brates, 77, 84 



Sequence of functions, 80, 109, 

 174, 309 ; condensed history of, 

 100, 153, 321 ; reversal of, 154, 

 305 



Sexual reproduction, 33, 37, 41 



Sin, 345 



Size, 35, 51, 73, 76, 89, 314 



Skeleton, 58, 74 ; mollusks, 59 ; 

 insects, 65, 67, 71 ; vertebrates, 

 74, 83 



Social life, 183, 317 



Socrates, 161, 189, 300 



Specializatian, 336, 339 



Struggle for existence, 11, 158, 

 377 ; mitigation of, 317 



Surface and mass, 35, 50 



Tissues, 43 

 Turbellaria, 46, 103 



Vektebeates, 73, 81, 107 ; 



primitive, 77 

 Volvox, 40 



Wkismann, 290 



Will, 136 



Worms. 56 ; schematic, 53 



