426 FINAL ACT OF SECOND PAN AMERICAN SCIENTIFIC CONGRESS. 



MARTIN, PERCY ALVIN, Stanford University, Cal. 

 Delegate Leland Stanford Junior University. 



MARTINEZ DE ALVA, SALVADOR, 25 Michigan Avenue, Washington, D. C. 

 Delegate Catholic University of America. 



MARTINEZ, EDUARDO, Montevideo, Uruguay, South America. 

 Member Cooperating Committee, Uruguay. 



MARTINS PINHEIRO, H. C. DE, Consul General of Brazil, New York City. 

 Honorary Member. 

 Paper presented : Investment of Capital in Brazil. 



MARVIN, CHARLES FREDERICK, Chief United States Weather Bureau, 



Washington, D. C. 



Delegate United States Weather Bureau. 

 Chairman, Subsection E, Section II. 

 Address of Welcome, Opening Session of Subsection B. 

 Paper presented : The Organization of Meteorology and Seismology in 

 the United States. 



MASFERRER, ALBERTO, San Salvador, El Salvador, Central America. 

 Member Cooperating Committee, El Salvador. 



MASON, WILLIAM PiTT, Professor, Rensselaer Polytechnic Institute, 



Troy, N. Y. 



Delegate Rensselaer Polytechnic Institute. 

 Paper presented: Recent Development in Water Purification and 



Sewage Disposal. 



MASSA, DIOGENES, Buenos Aires, Argentina, South America. 



Paper presented: Operative Treatment of Voluminous Unilocular 

 Cysts. 



MATAMOROS SANDOVAL, Luis, President of the Faculty of Engineers, San 



Jose", Costa Rica, Central America. 

 Member Cooperating Committee, Costa Rica. 

 Paper presented: A Contribution to the Study of the Earth, and the 



Remarkable Parallelism of the Earth's Mountain System. 



MATHESON, K. G., President, Georgia School of Technology, Atlanta, Ga. 

 Delegate Georgia School of Technology. 



Address before General Session of Section IV to discuss the Pan 

 American topic, "Secondary Education." 



