The Lewis and Clark Expedition, officially the Corps of Discovery, was in what is now South Dakota from August 21 to October 14, 1804, and from August 21 to September 4, 1806. During that time, the party made numerous discoveries of animals, plants, birds, and fish previously unknown to science, including the pronghorn antelope, which they called goats, the prairie dog, which they called barking squirrels, the mule deer, coyote, great gray wolf, prairie rattlesnake, northern jack rabbit, a different kind of porcupine, and the black billed magpie, then thought to exist only in Europe. They also met a number of Indian tribes, handing out gifts and making speeches about the great white father in Washington, and although there were a few tense moments, there were no battles with the tribes they encountered in present-day South Dakota. The expedition arrived in this area on October 14, 1804, one day after John Newman had been court-martialed for mutinous expression; nine members found him guilty and sentenced him to 75 lashes on the bare back and to be disbanded from the party. The sentence was carried out near here on October 14. Although Newman was allowed to remain with the party, he was deprived of all military gear and duties and assigned to a boat as a laborer performing menial tasks, which Lewis called drudgeries, around the campsites. An Arikara chief accompanying the party to arrange a peace with the Mandans was very alarmed at the punishment and told Clark that making examples of those doing wrong was necessary, even by death, but that the Arikaras did not whip anyone, not even their children. The weather was cold and rainy, and later that day the party traveled out of the area now known as South Dakota and into present-day North Dakota.