Lewis often went alone to collect plants and flowers. Many of those that he found in the territory were new species to him. Shortly after Council Bluff, he examined the beaver dam that he was very interested in. All of the plants and animals had interested him, and he was very happy with all the new species that he had found.
Clark was the official mapmaker, so everywhere that Lewis had found new species, Clark would draw the location of the species. Lewis was very fascinated in