The Evolution of Man

by Ernst Haeckel

— segments, [143]
— streak, the, [100,] [122]
— vertebræ, [144,] [195,] [206,] [229]
Primordial period, the, [201]
Prochordata, [192]
Prochordonia, the, [192,] [218]
Prochoriata, [253]
Prochorion, the, [44,] [119]
Proctodæum, the, [345]
Procytella primordialis, [210]
Prodidelphia, [256]
Progaster, the, [20,] [63]
Progonidia, [333]
Promammalia, [247]
Pronephridia, the, [151]
Pronucleus femininus, [54]
— masculinus, [54]
Properistoma, [69]
Prorenal canals of the lancelet, [186]
— duct, the, [132,] [139,] [186]
— — evolution of the, [338]
Proselachii, [234]
Prosimiæ, the, [257]
Prospermaria, [333]
Prospondylus, [105,] [229]
Prostoma, [20,] [63,] [222]
Protamniotes, [243–44]
Protamœba, [210]
Proterosaurus, the, [202,] [244]
Protists, [36,] [38]
Protonephros, [111,] [336]
Protophyta, [210]
Protoplasm, [37,] [209]
Protopterus, [238]
Prototheria, [248]
Protovertebræ, [142,] [144]
Protozoa, [20,] [210]
Provertebral cavity, the, [148]
— plates, the, [136,] [144]
Pseudocœla, [93,] [221]
Pseudopodia, [48]
Pseudova, [13]
Psychic life, evolution of the, [8]
Psychology, [8]
Pterosauria, [202]
Pylorus, the, [309]
Q
Quadratum, the, [247]
Quadrumana, [258]
Quaternary period, [203]
R
Rabbit, ova of the, [86–7]
Radiates, the, [103]
Rathke’s canals, [341]
Rectum, the, [317]
Regner de Graaf, [119]
Renal system, evolution of the, [335–42]
Reproduction, nature of, [330–31]
Reptiles, [245–47]
Respiratory organs, evolution of the, [314–15]
— pore, the, [183,] [189]
Retina, the, [286]
Rhabdocœla, [222]
Rhodocytes, [319]
Rhopalura, [215]
Rhyncocephala, [243]
Ribs, the, [295]
— number of the, [353]
Rudimentary ear-muscles, [292]
— organs, [32]
— — list of, [349–50]
— toes, [306]
S
Sacculus, the, [289]
Sagitta, [65,] [66,] [191]
— cœlomation of, [93]
Salamander, the, [241]
— ova of the, [74]
Sandal-shape of embryo, [128–29]
Satyrus, [174,] [262]
Sauromammalia, [246]
Sauropsida, [245]
Scatulation theory, the, [12]
Schizomycetes, [210]
Schleiden, M., [18,] [36]
Schwann, T., [18,] [36]
Sclerotic coat, the, [286]
Sclerotomes, [108,] [143,] [148]
Scrotum, the, [344]
Scyllium, nose of the, [283]
Sea-squirt, the, [181,] [188–90]
Secondary period, the, [202]
Segmentation, [60,] [141–42]
Segmentation-cells, [54]
Segmentation-sphere, the, [17]
Selachii, [223]
— skull of the, [301]
Selection, theory of, [28]
Selenka, [166,] [168]
Semnopitheci, [262]
Sense-organs, evolution of the, [151,] [280]
— number of the, [281]
— origin of the, [281]
Sensory nerves, [279]
Serocœlom, the, [165]
Serous layer, the, [16]
Sex-organs, early vertebrate form of the, [111]
— evolution of the, [333]
Sexual reproduction, simplest forms of, [331]
— selection, [30,] [271–72]
Shark, the, [233]
— nose of the, [283]
— ova of the, [75]
— placenta of the, [9]
— skull of the, [301]
Shoulder-blade, the, [306]
Sickle-groove, the, [82,] [121]
Sieve-membrane, the, [167]
Silurian strata, [202]
Simiæ, the, [257–60]
Siphonophoræ, embryology of the, [21]
Skeleton, structure of the, [294]
Skeleton-plate, the, [148]
Skin, the, [151]
— evolution of, [266–69]
— function of the, [269]
Skin-layer, the, [16]
Skull, evolution of the, [149,] [299–303]
— structure of the, [299]
— vertebral theory of the, [300]
Smell, the sense of, [282]
Soul, evolution of the, [353–56]
— nature of the, [58,] [356]
— phylogeny of the, [8]
— seat of the, [278]
Sound, sensations of, [289–90]
Sozobranchia, [242]
Space, sense of, [291]
Species, nature of the, [23,] [34]
Speech, evolution of, [264]
Spermaducts, [335,] [342]
Spermaries, evolution of the, [333–34]
Spermatozoon, the, [52–3]
— discovery of the, [12,] [53]
Spinal cord, development of the, [8]
— structure of the, [273]
Spirema, the, [42]
Spiritualism, [356]
Spleen, the, [318]
Spondyli, [142]
Sponges, classification of the, [34]
— ova of the, [49]
Spontaneous generation, [26,] [206]
Stegocephala, [239]
Stem-cell, the, [54]
Stem-zone, the, [129]
Stomach, evolution of the, [311–14,] [316]
— structure of the human, [309]
Strata, thickness of, [200–201]
Struggle for life, the, [28]
Subcutis, the, [268]
Sweat glands, [269]
T
Tactile corpuscles, [268,] [282]
Tadpole, the, [242]
Tail, evolution of the, [242–43]
— rudimentary, in man, [159,] [295,] [350]
Tailed men, [160–61]
Taste, the sense of, [282]
Teeth, evolution of the, [314]
— of the ape and man, [259]
Teleostei, [234]
Telolecithal ova, [67,] [68]
Temperature, sense of, [282]
Terrestrial life, beginning of, [235]
Tertiary period, the, [203]
Theoria generationis, the, [13]
Theories, value of, [181]
Theromorpha, [246]
Third eyelid, the, [286,] [288]
Thyroid gland, the, [110,] [184,] [315]
Time-variations in ontogeny, [5]
Tissues, primary and secondary, [37]
Toad, the, [241]
Tocosauria, [246]
Toes, number of the, [240]
Tori genitales, the, [346]
Touch, the sense of, [282]
Tracheata, [142,] [219]
Tread, the, [45,] [81]
Tree-frog, the, [241]
Triassic strata, [202]
Triton tæniatus, [74]
Troglodytes, [174]
Tunicates, the, [189]
Turbellaria, [222]
Turbinated bones, the, [283]
Tympanic cavity, the, [288]
U
Umbilical, cord, the, [117]
— vesicle, the, [138]
Unicellular ancestor of all animals, [47]
— animals, [38,] [47]
Urachus, the, [317,] [341]
Urinary system, evolution of the, [335–42]
Urogenital ducts, [335]
Uterus masculinus, the, [344,] [350]
Utriculus, the, [289]
V
Vasa deferentia, [335]
Vascular layer, the, [16,] [168]
— system, evolution of the, [321–25]
— — structure of the, [318]
Vegetative layer, the, [16]
Veins, evolution of the, [323–24]
Ventral pedicle, the, [166]
Ventricles of the heart, [325]
Vermalia, [220,] [223]
Vermiform appendage, the, [32,] [310,] [317]
Vertebræ, [142,] [294]
Vertebræa, [105]
Vertebral arch, the, [148,] [295]
— column, the, [144]
— — evolution of the, [296]
— — structure of the, [294]
Vertebrates, character of the, [104–10]
— descent of the, [219–20]
Vertebration, [142]
Vesico-umbilical ligament, the, [341]
Vesicula prostatica, the, [344,] [350]
Villi of the chorion, [165]
Virchow, R., [35]
— on the ape-man, [303]
— on the evolution of man, [264]
Virgin-birth, [9,] [13]
Vitalism, [6]
Vitelline duct, the, [138]
Volvocina, [213]
W
Wallace, A. R., [29]
Water, organic importance of, [200]
Water vessels, [336]
Weismann’s theories, [349]
Wolff, C. F., [13]
Wolffian bodies, [339]
Wolffian duct, the, [341]
Womb, evolution of the, [342–43]
Y
Yelk, the, [43,] [45,] [67]
Yelk-sac, the, [117,] [134]
Z
Zona pellucida, the, [44]
Zonoplacenta, [255]
Zoomonera, [209]
Zoophytes, [20,] [64,] [104]