Agriculture and Native Vegetation in Peru. Ibid., VI, No. 10, 284-293, 1916. Illus. Staircase Farms of the Ancients. National Geographic Magazine, XXIX, 474-534, May, 1916. Illus. Foot-Plow Agriculture in Peru. Smithsonian Report for 1918, 487-491. 4 pl. Domestication of Animals in Peru. Journal of Heredity, x, 176-181, April, 1919. Illus. (With Alice C. Cook:) Polar Bear Cacti. Journal of Heredity, Washington, D.C., VIII, 113-120, March, 1917. Illus. William H. Dall: Some Landshells Collected by Dr. Hiram Bingham in Peru. Proceedings of U.S. National Museum, XXXVIII, 177-182, 1911. Illus. Reports on Landshells Collected in Peru in 1911 by The Yale Expedition. Smithsonian Misc. Collections, LIX, No. 14, 12 pp., 1912. Harrison G. Dyar: Results of Yale Peruvian Expedition of 1911. Lepidoptera. Proceedings of U.S. National Museum, XLV, 627-649, 1913. George F. Eaton: Report on the Remains of Man and Lower Animals from the Vicinity of Cuzco. American Journal of Science, XXXIII, No. 196, 325-333, April, 1912. Illus. Vertebrate Remains in the Cuzco Gravels. Ibid., XXXVI, No. 211, 3-14, July, 1913. Illus. Vertebrate Fossils from Ayusbamba, Peru. Ibid., XXXVII, No. 218, 141-154, February, 1914. 3 pl. The Collection of Osteological Material from Machu Picchu. Trans. Conn. Academy Arts and Sciences, v, 3-96, May, 1916. Illus., 39 pl., map. William G. Erving, M.D.: Medical Report of the Yale Peruvian Expedition. Yale Medical Journal, XVIII, 325-335, April, 1912. 6 pl. Alexander W. Evans: Hepaticæ: Yale Peruvian Expedition of 1911. Trans. Conn. Academy Arts and Sciences, XVIII, 291-345, April, 1914. Harry B. Ferris, M.D.: The Indians of Cuzco and the Apurimac. Memoirs, American Anthropological Assoc., III, No. 2, 59-148, 1916. 60 pl. Anthropological Studies on the Quichua and Machiganga Indians. Trans. Conn. Academy Arts and Sciences, XXV, 1-92, April, 1921. 21 pl., map. Harry W. Foote: (With W. H. Buell:) The Composition, Structure and Hardness of some Peruvian Bronze Axes. American Journal of Science, XXXIV, 128-132, August, 1912. Illus. Herbert E. Gregory: The Gravels at Cuzco. American Journal of Science, XXXVI, No. 211, 15-29, July, 1913. Illus., map. The La Paz Gorge. Ibid., XXXVI, 141-150, August, 1913. Illus. A Geographical Sketch of Titicaca, the Island of the Sun. Bulletin of American Geographical Society, XLV, 561-575, August, 1913. 4 pl., map. Geologic Sketch of Titicaca Island and Adjoining Areas. American Journal of Science, XXXVI, No. 213, 187-213, September, 1913. Illus., maps. Geologic Reconnaissance of the Ayusbamba Fossil Beds. Ibid., XXXVII, No. 218, 125-140, February, 1914. Illus., map. The Rodadero; A Fault Plane of Unusual Aspect. Ibid., XXXVII, No. 220, 289-298, April, 1914. Illus. A Geologic Reconnaissance of the Cuzco Valley. Ibid., XLI, No. 241, 1-100, January, 1916. Illus., maps. Osgood Hardy: