id author title date pages extension mime words sentences flesch summary cache txt 6710 Haeckel, Ernst The Evolution of Man — Volume 2 .txt text/plain 106584 6646 67 connection with the stem-history of the body-cavity in man and the of the body-cavity in which the sexual organs are subsequently formed. previously formed of the "Primitive Vertebrate" (Figures 1.98 to that this gradual development of the human form from lower animal development of man from some closely-related group of apes, probably the common stem-form of the primitive vertebrate. (floating matter), a number of green cells form a simple layer at the man is closely related to the ape, and belongs to the vertebrate stem; skull, and brain, with further development of the higher sense-organs, classes of Vertebrates, is formed from the five primitive vesicles. development of the gill-clefts which are formed in the gut-wall originally simple gut developing into a variety of organs. section of the gut in man as in the lower Vertebrates; thus there is a developing in the embryo of man and the higher Craniotes (Figures ./cache/6710.txt ./txt/6710.txt