id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
6430	Haeckel, Ernst	The Evolution of Man — Volume 1			.txt	text/plain	104314	5460	64	important that we find a large number of lower animal forms to be two simple cell-layers (the gastrula), that the gastraea, a form with a simple cell, that divides and subdivides and forms germinal layers, developed in the same way, from tubes formed out of simple layers, did skin-fibre layer); it forms the outer wall of the body (the true skin, The cell-body also consists originally, and in its simplest form, of a cells which form the different tissues of the body; it unites all primitive mouth, s segmentation-cavity, i entoderm (gut-layer), e outer or animal layer, or ectoderm, always forms the chief organs of fish-ovum, these segmentation-cells form a round, lens-shaped disk, primitive gut, a double body-cavity is formed (Figures 1.74 to 1.76). b gut ventral wall, z yelk-cells in the latter, u primitive mouth, o primitive vertebrate form, as we see in Figures 1.98 to 1.102.	./cache/6430.txt	./txt/6430.txt