Those who interpreted the essence of Darwinism as being an explanation of evolution in (covertly) theistic terms appear to have had a point.
In the wild, all organisms must live within their niche. There are no wild polar bears in Arizona, and no iguanas in Alaska.
If you are a pine tree, you need to have antifreeze in your needles if you are rooted beyond certain latitudes or elevations.
A less class-bound kind of protectiveness was shown to Darwin in the United States by Professor Asa Gray of Harvard University.
The lure of Lamarck was exemplified most strikingly in the case of Viennese biologist Paul Kammerer and the unhappy affair of the “midwife toad.”