FINAL, ACT OF SECOND PAN AMERICAN SCIENTIFIC CONGRESS. 369 



DAVIS, CHANDLER, i Broadway, New York City, N. Y. 



Paper presented: Employment and Behavior of Concrete and Rein- 

 forced Concrete in Fresh and Saline Waters and Under Servitude of 

 Waves in Exposed Positions. 



DAVIS, JESSE BUTRICK, Principal Central High School, Grand Rapids, 



Mich. 

 Member of Committee, Subsection 2, Section IV. 



DAVIS, J. D., Chemist, Bureau of Mines, Washington, D. C. 



Paper presented : Standard Methods for Analyzing Coal and Coke. 



DAY, D. T., Consulting Chemist, United States Bureau of Mines, Washing- 

 ton, D. C. 

 Paper presented: The Petroleum Resources of Mexico. 



DAY, WILLIAM R., Associate Justice of the Supreme Court of the United 



States, Washington, D. C. 

 Member of Committee, Subsection i, Section VI. 



DAYTON, J. H., Bureau of Navigation, Navy Department, Washington, 



D. C. 

 Delegate Bureau of Navigation of the Navy Department. 



DEARHOLT, HAYES E., University of Wisconsin, Madison, Wis. 



Paper presented : What Can Unofficial Effort Do for Public Health? 



DEJEAN, LEON, 1316 Rhode Island Avenue NW., Washington, D. C. 

 Official Delegate of Haiti. 



DELAY AN, PABLO T., Professor of the Faculty of Physical Science, Mathe- 

 matics, and Astronomy, National University of La Plata, La 

 Plata, Argentina, South America. 



Paper presented : Work with the Meridian Circle of the Observatory of 

 La Plata. 



DE LIMA, E. A., President Battery Park National Bank, 2 Broadway, 



New York City, N. Y. 

 Delegate Merchants Association of New York. 



DELLEY, M., Caracas, Venezuela, South America. 



Paper presented : How Can a Nation Prepare in the Most Effective 

 Manner Its Young Men for a Business Career That is to be Pursued 

 at Home or in a Foreign Country? 



(a) In schools that are a part of the public-school system. 

 (6) In schools of private endowment. 

 (c) In special business schools of private ownership. 

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