234 REPORT OF THE SECRETARY GENERAL. 



The mechanistic theory of cancer, by G. A. H. Clowes. 



The relation of hay fever to anaphylaxis, together with a theory regarding the 



nature of anaphylactic phenomena, by G. A. H. Clowes. 

 The tissue culture in cancer, by Montrose T. Burrows. 

 Tissties cultures in cancer, by Robert A. Lambert. 

 Tumor immunity, by E. E. Tyzzer. 



SECTION IX. 



tRANSPORTATION, COMMERCE, FINANCE, AND TAXATION. 



Address before the section, by the Secretary of the Treasury, Hon. William 

 Gibbs McAdoo. 



SUBSECTION 1. 



TRANSPORTATION, • 



A navegagdo interior do Brasil, by Pedro Souto Maior. 



Ferrocarriles de la Republica Oriental del Uruguay, by Guillermo Dotte. 



How the aeroplane may effect closer alliance of the South A merican countries 



with the United States, by Alberto Santos-Dumont. 

 Hydroplanes, by Gonzalo Mejia. 

 Lines of future railway development, by Fred Lavis. 

 Motor driven vehicles and motor railroad cars as a factor in transportation, 



by Thomas H. Wheless. 

 Necesidad de un convenio inter nacional sobre arqueo de buqu^s mercantes, 



by Guillermo Lyons. 

 Regulation of public utilities, by Charles A. Prouty. 

 Resena general sobre la marcha y desarrollo qu£ han tenido los ferrocarriles 



colombianos desde 1835 hasta 19 14, by Alfredo Ortega. 

 Some problems and principles of Government regulation of railroads, by 



Emory R. Johnson. 

 The relation of central to local control in the regulation of public utilities, 



by Alfred P. Thom. 

 The safety-first movement on American railways, by Ralph C. Richards. 



SUBSECTION 2. 

 COMMERCE. 



Abundant vegetable products in Venezuela for dyeing and tanning, by 



Andres Ybarra. 

 A plea for the ratification of the Buenos Aires Trade-Mark Convention of 



Aikgust 20, 1910, by James T. Newton. 



