(3) Modern inuence
The embryo drawings are still widely printed in
reference books and student texts, and have therefore
been widely accepted as teaching devices (Gould,
2000). They are also used in technical scientic
publications (Duboule, 1994; Butler and Juurlink,
1987). Their modern use is to illustrate one or more
of the same three points that Haeckel intended,
namely: embryonic resemblance as
evidence of
evolution; phenotypic divergence; and recapitulation.
Haeckle's drawings were being critiqued by colleagues right out of the box. No one waited for the creationists to point it out. Moreover, "presumably in response to criticisms", Haeckle redrew his illustrations for later editions. Which set of illustrations are currently being used?
From the preceding page .
(2) Evolution of the embryological drawings
Haeckel's drawings, like some of his ideas, change
through subsequent editions of his works. In later
editions of Anthropogenie, Haeckel modies and
elaborates the set of eight species from 1874 presumably
in response to criticisms, and to accommodate
new data. He takes more trouble to
acknowledge, in text and pictures, that there are
differences among embryos of different species. The
plates in the fourth edition (Haeckel, 1891) show
more species than those in the rst and second
editions, although anamniotes are no longer depicted.
In the fth edition (Haeckel, 1903), a further six
species are added making a total of six plates. He also
takes more care to compare embryos at similar
stages, citing for example the rapid developmental
transformations in the region of the pharyngeal
arches (Haeckel, 1910: pp. 3536). Some elements of
the 1874 plates are retained while others are
Haeckel's evolution and development 515
modied. For example the chick embryo in Table
IX of Haeckel (1903) uses the same advanced stage
(GIII) as the Haeckel (1874a) Anthropogenie gure,
but presents revised early stages (GIII)
Edited by lyx2no, : Accuracy.
Kindly
There is a spider by the water pipe.
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