424 FINAL ACT OF SECOND PAN AMERICAN SCIENTIFIC CONGRESS. 



MALDONADO, SAMUEL DAR!O, Caracas, Venezuela, South America. 

 Member of Cooperating Committee, Venezuela. 



MALL, F. P., Professor, Johns Hopkins University, Baltimore, Md. 

 Member of Committee, Subsection 3, Section I. 



MANDUJANO, Miss GRACIELA, Santiago, Chile, South America. 



Paper presented : The Teaching of Modern Languages in the Secondary 

 Schools in Chile. 



MANN, CHARLES R., Carnegie Foundation for the Advancement of Teach- 

 ing, New York, N. Y. 



Paper presented: The Study of Engineering Education by the Joint 

 Committee of the National Engineering Societies. 



MANNING, VAN H., Director United States Bureau of Mines, Department 



of the Interior, Washington, D. C. 

 Delegate Bureau of Mines. 

 Chairman of Subsection i, Section VII. 

 Paper presented : The United States Bureau of Mines. 



MANNING, WM. R., Professor, University of Texas, Austin, Tex. 

 Delegate University of Texas. 



Paper presented: Method of Approach in Teaching Ethics to Girls and 

 Young Women. 



MANRIQUE, FRANCISCO, Guayaquil, Ecuador, South America. 

 Honorary Member. 

 Papers presented : 



Highways in Ecuador. 



Sanitary Engineering in Ecuador. 



MANRIQUE, MART!N A., Engineer, Bogota, Colombia, South America. 

 Papers presented : 



General Study of the Construction and Conservation of Roads and 



Streets in General. 

 Highways and Streets in Bogota. 



MANSFIELD, GEORGE R., Geologist, United States Geological Survey, 



Washington, D. C. 

 Paper presented: Phosphate Resources of the United States. 



MANZANILLA, Jos MAT!AS, Lima, Peru, South America. 

 Member of Cooperating Committee, Peru. 



MARBURG, EDGAR, Professor, University of Pennsylvania, Philadelphia, 



Pa. 

 Delegate International Association for Testing Materials. 



