1 86 FINAL ACT OF SECOND PAN AMERICAN SCIENTIFIC CONGRESS. 



Subsection B. 



THIRD SESSION, THURSDAY, DECEMBER 30, 19159.30 A. M. 

 C. F. MARVIN, Chairman. 



Frequency, Amount, and Characteristics of Rainfall and Hailstorms at 

 Villa Colon, Montevideo, from 1888 to 1914. (Read by title.) 



LUIS MORANDI. 



The Climate of Salt Lake City. A. H. THIESSEN. 

 Discussion by Messrs. FASSIG and WELLS. 



The River Plate. (Read by title.) 

 HAMLET BAZZANO. 



The Economic Aspects of Cliraatology. EDWARD L. WELLS. 

 Discussion by J. W. SMITH. 



Sleet and Ice Storms in the United States. H. C. FRANKENFIELD. 

 Discussion by Messrs. HENRY, ARCTOWSKI, BROOKS, and BLAIR. 



Forecasts of Weather Favorable to the Increase of Forest Fires. E. A. 



BEALS. 

 Discussion by Messrs. WELLS and HENRY. 



Subsection A. 



THIRD SESSION, FRIDAY, DECEMBER 31, 1915. 

 ROBERT S. WOODWARD, Chairman. 



Determination of the Earth's Shape by Simultaneous Astronomical Observa- 

 tions in North and South America. ERNEST BROWN, Yale Uni- 

 versity. 



Desirability and Practicability of Covering the South, Central, and North 

 American Areas with a Network of Precise Triangulation. R. S. 

 WOODWARD, Carnegie Institution of Washington. 



Desirability and Practicability of Extending a Gravimetric Survey over the 

 South, Central, and North American Areas. R. S. WOODWARD, 

 Carnegie Institution of Washington. 



