St. of Amer., 5th Ann. Rep., 1884.] Mr. Bandelier described the large group, of which the Casa Grande forms a part, and gave its dimensions as 400 meters (1,300 feet) north and south by 200 meters (650 feet) east and west. He also described and gave measurements of the Casa Grande proper and discusses its place in the field of aboriginal architecture. In a later publication[1] he discussed the ruin at somewhat greater length, and presented also a rough sketch plan of the group and ground plans of the Casa Grande and of the mound north of