Mr. A. M. Stephen continued work among the Tusayan pueblos under the direction of Mr. Victor Mindeleff. He added much to the knowledge of the traditionary history of Tusayan, and made an extensive study of the house lore and records of house-building ceremonials. He also reported a full nomenclature of Tusayan architectural terms as applied to the various details of terraced-house construction, with etymologies. He secured from the Navajo much useful information of the ceremonial connected with the construction of their conical lodges or “hogans,” supplementing the more purely architectural records of their construction previously collected by Mr. Mindeleff. As opportunity occurred he gathered typical collections of baskets and other textile fabrics illustrative of the successive stages of their manufacture, including specimens of raw materials and detailed descriptions of the dyes used. These collections are intended to include also the principal patterns in use at the present time, with the Indian explanations of their significance. OFFICE WORK. Major J. W. POWELL, the Director, devoted much time during the year to the preparation of the paper to accompany a map of the linguistic families of America north of Mexico, the scope of which has been alluded to in previous reports. This report and map appear in the Seventh Annual Report of the Bureau. Mr. HENSHAW was chiefly occupied with the administrative duties of the office, which have been placed in his charge by the Director, and with the completion of the linguistic map. Col. MALLERY, after his return from the field work elsewhere mentioned, was engaged in the elaboration of the new information obtained and in further continued study of and correspondence relating to sign language and pictography. In this work he was assisted by Mr. HOFFMAN, particularly in the sketches made by the latter during previous field seasons, and in preparing a large number of the illustrations for the paper on Picture-writing of the American Indians which appears in the present volume.