P. Lamarck was the first author to work out a connected theory of descent and to suggest that the relationships of organic forms were due to actual affinities.
Moreover, whatever the value of Goethe's labours in that field, they were not published before 1820, long after evolutionism had taken a new departure from the works of Treviranus and Lamarck - the first of its advocates who were equipped for their task with the needful large and accurate knowledge of the phenomena of life as a whole.
Now, in 1794, there is evidence that Lamarck held doctrines which present a striking contrast to those which are to be found in the Philosophic zoologique, as the following passages show: " 685.
In the preface, Lamarck says that the work was written in 1776, and presented to the Academy in 1780; but it was not published before 2794, and at that time it presumably expressed Lamarck's mature views.
For many years it was the fashion to speak of Lamarck with ridicule, while Treviranus was altogether ignored.