After reading about Erasmus Darwin and his evolutionary speculations which preceded that of his grandson, Charles, I can see that pre-Darwinian evolutionary thoughts are important. They actually began with the Greek philosophers. There were many different ideas but the most popular are Plato and Aristotle. Both of these men wrote of an advancement towards the ideal, divine, unchangeable Form.
Aristotle's thoughts are the more evolutionary. He wrote that changes occurred from lifeless primeval matter to vegetation. Then, according to Aristotle, there was another transition from plants to animals. These transitions are a gradual progression from the lower forms to the highest which is man.
These ideas are captivating and interesting for sure, but are still speculative and unscientifically based.
Discussing Creationism: The Initial Argument
Part II: Two Questions about the Ark
Part III:The Volume of the Ark
Part IV: The Weight and Sturdiness of the Ark
Part V:What is a Myth
Part VI: Gilgamesh
Part VII: The Biblical View of Noah
Part VIII: Gathering of the Animals
Part IX Evolution
Part X The First Evolutionist
Part XI The Notebook
Part XII Erasmus Darwin