Includes the first description of the value of digitalis in the treatment of patients with heart failure, with discussion of several successful cases. Digital facsimile from Google Books at this link.  Darwin and Withering were associated through the Lunar Society of Birmingham.

English translation of Linneus's Species plantarum (No. 99.1), edited by Charles Darwin's grandfather. Digital facsimile from the Biodiversity Heritage Library, Internet Archive, at this link.

The first edition of part 2, preceded part 1, being published in 1789. This poem was the chief source of Erasmus Darwin's literary fame during his lifetime. Like his other works, this poem contains a great deal of frequently advanced scientific information in the nearly 300 footnotes and 115 pages of appendices. This work also contains five plates engraved by William Blake, including "The fertilisation of Egypt" after a design by Henry Fuseli, and 4 engravings of the Portland Vase.

Grandfather of Charles Darwin and Francis Galton, Erasmus Darwin provided in Zoonomia, his major work in medicine and natural science, the first consistent all-embracing hypothesis of evolution. Nevertheless, his grandson, Charles, said Erasmus’s theory had no effect on his On the Origin of Species.

Erasmus Darwin's last poem, which mainly expounds his theories of evolution. He traces the progress of life form its origin as microscopic specks in premeval seas to its culmination in a civilized human society. The first canto shows life's origin and its evolution from aquatic to land forms. The second deals with reproduction--asexual, hermaphroditic and finally sexual reproduction with all its advantages. The third canto traces the progress of the mind, from its origin as a mere meeting-place of nerves to its present complexity in man. In the fourth canto Darwin descrbies the struggle for existence and the survival of the fittest. The essay-length scientific notes (last 124pp.) contain summaries of theories of spontaneous generation, etc. Erasmus Darwin's theory of evolution has been compared to Lamarckism.

Digital facsimile from the Internet Archive at this link.

Krause's short biography originally appeared in the German evolutionary periodical Kosmos in February 1879. In this translation Darwin added a biographical contribution that is longer than Krause's, i.e. 127pp by Darwin versus 89pp. by Krause. Darwin paid frequent tribute to his grandfather Erasmus, but denied that Erasmus's ideas had influenced him significantly in the development of the theory of evolution by natural selection. Digital facsimile of the copy Darwin presented to his daughter Henrietta Litchfield from the Internet Archive at this link.