Publisher's Synopsis
As a rule, the artists are found to have confused ideas regarding the geological periods. Some place the white savages in the age when the wonderful megalithic monuments were erected and civilization was well advanced, while others consign them to the far-distant Cretaceous Age in association with the monstrous reptiles that browsed on tropical vegetation, being unaware, apparently, that the reptiles in question ceased to exist before the appearance of the earliest mammals. Not unfrequently the geological ages and the early stages of human culture are hopelessly mixed up, and monsters that had been extinct for several million years are shown crawling across circles that were erected by men possessed of considerable engineering skill.