xii MINUTES. [April 24, 



"The General Magnetic Field of the Sun." (Illustrated with 

 lantern slides.) By George E. Hale, Ph.D., LL.D., F.R.S., 

 Director of the Solar Observatory of the Carnegie Institution 

 at Mt. Wilson, Cal. 



" On the Colors of the Stars in the Cluster M 13," by Edward E. 

 Barnard, Sc.D., LL.D., Astronomer of the Yerkes Observ- 

 atory, Williams Bay, Wis. 



" The Use of a Photographic Doublet in Cataloguing the Posi- 

 tion of Stars," by Frank Schlesinger, ALA., Ph.D., Director 

 of the Allegheny Observatory, Allegheny Pa. Discussed by 

 Prof. Pickering. 



" The Distribution in Space of 90 Eclipsing Stars," by Henry 

 Norris Russell, Ph.D., Professor of Astronomy, Princeton 

 L^niversity. 



" The Eclipsing variable Stars il/ Orionis and 88 d Tauri," by 

 Harlow Shapley, Ph.D., of Princeton University Observatory. 

 (Introduced by Prof. H. N. Russell.) 



" Some Features of The IMoon's Motion and a Problem in 

 Isostasy," by Ernest W. Brown, M.A., Sc.D., F.R.S., Professor 

 of Mathematics, Yale • University. 



" The United States as a Factor in World Politics," by Leo S. 

 Rowe, Ph.D., LL.D., Professor of Political Science, Univer- 

 sity of Pennsylvania. 



"A Sumerian Nature Hymn from Nippur, of the Time of the 

 Dynasty of Agade, 2800-2600 B. C," by George A. Barton, 

 Ph.D., Professor of Biblical Literature, Bryn Mawr College. 



Evening Sessioii — S:i^ o'clock. 



Arthur L. Day, Ph.D., Director of the Geophysical Laboratory 

 of the Carnegie Institution of Washington, gave an illustrated 

 lecture on " Some Observations of the Volcano Kilauea in 

 Action." 



