viii MINUTES. 



souri Botanical Garden, St. Louis. (Introduced by Prof. 

 Bradley M. Davis.) 

 "The Relation of the Diet to Pellagra," by E. V. McCollum, 

 Ph.D., Professor of Bio-Chemistry, Johns Hopkins Univer- 

 sity. (Introduced by Dr. Henry H. Donaldson.) 



Afternoon Session^ 2 o'clock. 



George Ellery Hale, Ph.D., Sc.D., LL.D., Vice-President, in the 



Chair. 



The following papers were presented : 



" The Eclipse Expedition from the Lick Observatory. Some 

 Solar Eclipse Problems," by W. W. Campbell, Sc.D., LL.D., 

 Director of the Lick Observatory, Mount Hamilton, Calif. 



" The Expedition of the Mount Wilson Observatory to the So- 

 lar Eclipse of June 8, 1918," by J. A. Anderson, Ph.D., Mount 

 Wilson Solar Observatory, Pasadena, Calif. (Introduced 

 by Prof. John A. Miller.) 



"The Lowell Observatory Eclipse Observations, June 8, 1918. 

 Prominences and Coronal Arches," by Carl O. Lampland, 

 A.M., Lowell Observatory, Flagstaff, Arizona. (Introduced 

 by Prof. Eric Doolittle.) 



"The Flash Spectrum," by Samuel Alfred Mitchell, Ph.D.. Di- 

 rector McCormick Observatory, University of Virginia. 

 (Introduced by Prof. John A. Miller.) 



" Electric Photometry of the 1918 Eclipse," by Jacob Kunz, 

 Ph.D., and Joel Stebbins, Ph.D., University of Illinois, Ur- 

 bana. 111. (Introduced by Prof. John A. Miller.) 



" The Sproul Observatory Eclipse Expedition. The Form of 

 the Coronal Streamers," by John A. Miller, A.M.. Ph.D., Di- 

 rector of the Sproul Observatory, Swarthmore College, Pa. 



" Results of Observations of the Eclipse by the Expedition 

 from the Yerkes Observatory," by Edwin B. Frost, D.Sc, 

 Professor of Astrophysics and Director of Yerkes Observa- 

 tory, University of Chicago. 



" Self-Luminous Night Haze," by E. E. Barnard, D.Sc, LL.D., 

 Professor of Practical Astronomy, University of Chicago. 



