Mabch 19, 1909] 



SCIENCE 



445 



contributors for the United States is as 

 follows :" 



Astronomical Problems of the Southern Hemi- 

 sphere: H. D. CUBTIS. 



The Electronic Theory of Matter: W. B. Smith. 



Recent Progress in Spectroscopy: A. A. Michel- 

 son. 



Statistics of the Use of Nitrate of Soda in the 

 United States: Chables E. Muneoe. 



The Economy of Fuels: William Kent. 



Recent Studies in Experimental Evolution: 

 Thomas Baebotie. 



Notes on the Origin of the North American 

 Prairies: C. H. Hall. 



Origin of the Minnesota Iron Ores: C. H. Hall. 



The Peopling of America: W. H. Holmes. 



The Newer Geological Views Regarding Suiter- 

 ranean Waters: James F. Kemp. 



The Mineral Wealth of America: R. W. Raymond 

 and W. R. Ingalls. 



The Shaler Memorial Expedition in Brazil and 

 Chile: J. B. Woodwoeth. 



The Application of Electricity to Railways: 

 Feank Speague. 



Sanitation m the Tropics with Relation to Ma- 

 laria and Yellow Fever: W. C. Goegas. 



Frequency and Prevention of Yellow Fever: C. J. 



FiNLAY. 



Notes on the Sanitation of Yellow Fever and 

 Malaria from Isthmian Experience: H. A. 

 Caetee. 



Plague; Methods of Control: J. 0. Peeky. 



America in the Pacific: A. C. Coolidge. 



America and International Law: Paul S. Reinsch. 



Public Opinion in the American Democracies: 

 L. S. RowE. 



Why the English Colonies on Achieving their In- 

 dependence Constituted a Single State, whereas 

 the Latin-American Colonies could not Form a 

 Federation among Themselves, nor even a Con- 

 federation: HiEAM Bingham. 



Geological Work in Brazil: Oeville A. Debby. 



Foundations of the Spanish and English Colonial 

 Civilization in America: Beenaed Moses. 



American Banks: J. Laweence Laughlin. 



Uniformity and Cooperation in the Census Meth- 

 ods of the Republics of the American Continent : 

 S. N. D. Nobth. 



The Influence of Urban Environment on the Life 

 and Thought of the People: L. S. Rowe. 



"This list is in part a translation from the 

 Spanish, and may be somewhat imperfect. 



The Treatment of Indian Tribes of the United 



States: Fbancis E. Leupp. 

 Race Degeneration: W. B. Smith. 

 The Reclaiming of Arid Lands in tlie United 



States: F. H. Newell. 

 Instruction in Animal Husbandry at Agricultural 



Colleges of the United States: Geobqe M. 



Rommel. 

 National Sanitary Police in the United States: 



Geoege M. Rommel. 

 The Tendencies of Female Education and its Bear- 

 ing on the Social Mission of the Women of 



America: Wm. F. Rice. 

 Laws of Heredity: Thomas Baeboub. 

 Adaptation of Instruction to the American Social 



Medium: W. R. Shepheed. 

 Nurses as Assistants in the Medical Inspection 



of Schools: Doba Keen. 

 Recent Advances in the Study of Typhoid Fever: 



M. J. ROSENAU. 



Pensioning Mothers who Depend on the Labor of 



their Sons, to Enable the latter to Pursue their 



Studies: Doba Keen. 

 Plans and Gauges of Intercontinental Railways: 



Wm. J. WiLQUs. 

 Some Phases of the Early History of Mexico and 



Central America: Alc£e Fobtiee. 

 The Writing of History in the United States: 



W. M. Sloane. 

 The Value of Gas Power: Chaeles E. Lucke. 

 Uniformity of Commercial Law throughout the 



American Continent: Roscoe Pound. 

 Pan-American Terminology : C. 0. Matlloux. 

 Car Lighting in North America: R. M. Dixon. 

 Reinforced Concrete Construction for South Amer- 

 ica: Wm. H. Bube. 

 The New Philippine Currency System: E. W. 



Kemmebee. 

 Water Supply of Cities and Towns : Allen Hazen. 

 Use of Tertiary Coals in General Metallurgy and 



in the Manufacture of Coke: Wm. Hutton 



Blauvelt. 

 The Supply of Potable Water: Rudolph Heeing. 

 An Analysis of Five Hundred Cases of Epidemic 



Meningitis Treated with the Antimeningitis 



Serum : James W. Jobling and Simon Flexnee. 

 American Agriculture in Its Relation to Chilean 



Nitrate: Wm. S. Myebs. 

 The Processes for the Concentration of Ore: Rob- 



EET H. Richaeds. 

 Future Supply of Iron Ore: Henby M. Howi!. 



The concluding session of the Congress 

 was held at the university in the forenoon 

 of January 5, and various matters of gen- 



