The College of Physicians of Philadelphia Digital Library

Vergleichung der Embryonen eines Fisches, eines Amphibiums, eines Reptils und eines Vogels auf drei verschiedenen Entwickelungsstufen

About This Item

Title

Vergleichung der Embryonen eines Fisches, eines Amphibiums, eines Reptils und eines Vogels auf drei verschiedenen Entwickelungsstufen

Subject

Anatomy, Comparative
Embryology
Biological Evolution
Book Illustrations

Description

Lithograph by J. G. Bach from a drawing by Ernst Haeckel
Comparative illustrations of the embryos of a fish, an amphibian, a reptile and a bird. Embryos are depicted in three stages of development, with the earliest stage (I) appearing in the top row and the latest stage (III) appearing in the bottom row. Embryos depicted include that of a fish ("Knochenfisch," F) an amphibian ("Erdsalamander," A), a reptile (a turtle, T), and a bird (a hen, H).
Title from table of contents.

Creator

Haeckel, Ernst, 1834-1919
Bach, J. G.

Source

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.

Publisher

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

Date

1874

Identifier

Bc_25a.pl4

Original Format

1 print : lithograph

Physical Dimensions

18 x 13 cm

Citation

Haeckel, Ernst, 1834-1919 and Bach, J. G., “Vergleichung der Embryonen eines Fisches, eines Amphibiums, eines Reptils und eines Vogels auf drei verschiedenen Entwickelungsstufen,” The College of Physicians of Philadelphia Digital Library, accessed October 25, 2020, https://www.cppdigitallibrary.org/items/show/205.