Schematische Längsschnitte durch verschiedene Keimformen und Stammformen des Menschen, um deren Aufbau aus den vier secundären Keimblättern zu zeigen

Anatomy, Comparative

Embryology

Biological Evolution

Book Illustrations

Lithograph by J. G. Bach from a drawing by Ernst Haeckel.

Longitudinal sections of different animals and their embryos at different stages of development. Longitudinal sections through the gastrula (figure 9), through an ancient primordial worm (Urwurm, Prothelmis

figure 10), through a lower coelomate worm (figure 11), through an extinct "chordaworm" (figure 12), through an ancient primordial fish (Urfisch, Proselachius

figure 13), through a human embryo of three weeks (figure 14), through a human embryo of five weeks (figure 15), and through a developed human female (figure 16).

Title from table of contents.

Haeckel, Ernst, 1834-1919

Bach, J. G.

Original image in: Haeckel, Ernst, 1834-1919. Anthropogenie, oder, Entwickelungsgeschichte des menschen (Leipzig : Wilhelm Engelmann, 1874). Bc 25a (Historical Medical Library of The College of Physicians of Philadelphia)

Ernst Haeckel's Anthropogenie, oder, Entwickelungsgeschichte des menschen, a simplified embryology textbook focusing on ontogeny and phylogeny, was first published in 1874. Challenged on the accuracy of its embryological illustrations and it's promotion of the recently developed theories of Darwin, the book's publication was the subject of much controversy. Many of the work's embryological illustrations were borrowed from previous textbooks, along with a few originals by Haeckel himself.

Digitized by the Historical Medical Library of The College of Physicians of Philadelphia

1874

ger

StillImage

Bc_25a.pl3

1 print : lithograph, color

20 x 13 cm