CHAPTER I.. History of the Sexual Theory

History of the Sexual Theory

1. From Aristotle to R. J. Camerarius 376

2. Establishment of the Doctrine of Sexuality in Plants by R. J. Camerarius, 1691-1694 385

3. Dissemination of the New Doctrine; its Adherents and Opponents, 1700-1760 390

4. The Theory of Evolution and Epigenesis 402

5. Further Development of the Sexual Theory by J. G. Koelreuter and Konrad Sprengel, 1761-1793 406

6. New opponents of Sexuality and their refutation by Experiments, 1785-1849 422

7. Microscopic Investigation into the Processes of Fertilisation in the Phanerogams, the Pollen-Tube and Eggs, 1830-1850 431

8. Discovery of Sexuality in the Cryptogams, 1837-1860 436