Who were Iowa's first inhabitants is a question of some interest. Archeologists tell us that there have been found in the Mississippi Valley the remains of two distinct prehistoric races. The first human skulls discovered resemble those of the gorilla. These skulls indicate a low degree of intelligence. The first inhabitants were but a grade above the lower animals. They were small in body, and brute-like in appearance. Next came the "mound builders." There are evidences that these had some degree of intelligence. Copper and stone implements have been found in the mounds. Whether they built towns and cities or tilled the soil is not known. Pieces of cloth discovered in the mounds would indicate some knowledge of the arts. Their number, their size, color, customs--all are lost to us. We know they existed, and that is all. Several of these mounds have been explored in Iowa. They are found in the eastern parts of the state from Dubuque to Burlington. Many interesting articles have been found in them--sea shells, copper axes and spools, stone knives, pottery, pipes carved with effigies of animals and birds. Skeletons and altars of stone were unearthed a few years ago in some of these mounds, and in one were discovered hieroglyphics representing letters and figures of trees, people and animals. These mounds have also been discovered in the central part of the state, the valley of the Des Moines river being especially rich in them. Sometimes they are in groups, as though built for defense. It has been suggested that probably the conquerors of the mound builders were the immediate ancestors of the Indians. When on June 25, 1673, Marquette and Joliet fastened their frail craft to the west bank of the Mississippi river where the Iowa enters it in Louisa county,[A] the only people living in what is now Iowa were the American Indians. When these venturesome explorers came ashore and ascended a slight eminence they beheld a scene of rare beauty. As far as the eye could carry they looked over an expanse covered with green grass waving in the gentle wind like the billows of the sea, with here and there a grove of oak, elm, walnut, maple, and sycamore. All was peaceful, calm, and restful; the stillness of the desert prevailed. That the country was inhabited was indicated by a thin column of smoke which arose some few miles inland from a small grove. The travelers soon reached the spot. There they found a small company of Indians in a village on the banks of the stream. The Indians were probably the more astonished of the two parties. They looked with wonder upon the strange beings who had come among them so unceremoniously and unannounced. It was probably their first view of the white man. Recovering somewhat from their astonishment, they made overtures of friendship by offering the pipe of peace.