ANNOUNCE SERIES OF SCIENTIFIC LECTURES

Three popular lectures, illustrated by experiments, to which teachers and students of physics in the neighborhood of Boston are especially invited, will be given on the first three Friday evenings of May under the auspices of the Department of Physics at the University. The lectures, each of which will begin at 8 P. M., will be held in the large lecture room of the Jefferson Physical Laboratory, and will be open to the public without charge.

On May 5 the lecturer will be Professor Theodore Lyman '97, director of the Jefferson Laboratory, and the subject will be "The Nature of Light." On May 12, Professor E. L. Chaffee '08, will speak on "The Vacuum Tube and Its Application to Radio-Telegraphy and Telephony." On May 19, Professor F. A. Saunders will lecture on "The Experimental Study of Sound Waves."

Another series of public lectures will be given at the University on Friday afternoons, April 28, May 5, and May 12, at 4 P. M., under the auspices of the Peabody Museum and the Division of Anthropology. These lectures, which will be held at the Peabody Museum, Divinity avenue, Cambridge, will be illustrated with lantern slides and museum collections.

On Friday, Dr. A. V. Kidder '08, curator of Southwestern Archaeology, will take as his subject "Basic Civilizations in the Southwest", describing the coming of agriculture into the Southwest and tracing the life, art, and design of the basket-makers and cliff-dwellers. On May 5, Dr. Charles Peabody '90, curator of European archaeology, will speak on "Art Prehistoric and Primitive", telling of the remarkable art of upper Paleolithic times in southern France and comparing these early efforts with the drawings of children. On May 12, Dr. H. J. Spinden '06, curator of Mexican Archaeology, will lecture on "Maya Art" as revealed in recent explorations made in Yucatan.