FINAL, ACT OF SECOND PAN AMERICAN SCIENTIFIC CONGRESS. 26l 



Metallurgy at Braden. 



BERNARD T. COLLEY, Superintendent, Braden Copper Company, 

 and Ross E. DOUGLAS, Mining Engineer, 'Braden Copper Com- 

 pany, New York, N. Y. (Section VII, Subsection 2.) 



Metallurgical Operations at Chuquicamata. 



E. A. ROSE, Metallurgist, American Smelting & Refining Com- 

 pany, New York, N. Y. (Section VII, Subsection 2.) 



Recent Progress in Metallurgical Practice in Peru. 



MIGUEL FORT, Mining Engineer, Lima, Peru. (Section VII, Sub- 

 section 2.) 



Conservation of Phosphate Rock in the United States. 



W. C. PHALEN, Geologist, United States Geological Survey, Wash- 

 ington, D. C. (Section VII, Subsection 3.) 



Phosphate Resources of the United States. (Illustrated.) 



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

 Washington, D. C. (Section VII, Subsection 3.) 



Subsection 4. 



ROOM D, RALEIGH HOTEL. 



C. E. MUNROE, Chairman. 



W. P. MASON, Honorary Chairman. 



Action of Sulphate of Manganese in Wine Fermentation. 



JUAN B. LARA, Professor of Chemistry, University of Mendoza, 

 Mendoza, Argentina. 



The Application of the Paper Pulp Filter to the Quantitative Estimation of 



Calcium and Magnesium. 



S. L. JODIDI, Organic Chemist, United States Department of Agri- 

 culture, Washington, D. C. 



Rittman Process. 



W. RITTMAN, Chemical Engineer, United States Bureau of Mines, 

 Pittsburgh, Pa. 



Standard Methods for Analyzing Coal and Coke. 



A. C. FIELDNER, Chemist; G. S. POPE, Engineer; and J. D. DAVIS, 

 Chemist, United States Bureau of Mines, Washington, D. C. 



