THE MODERN SCIENCE OF METALS, 

 PURE AND APPLIED 



By WALTER ROSENHAIN, F.R.S. 



Superintendent, Metallurgy Department, 

 National Physical Laboratory. 



As a concrete example of the most far-reaching 

 practical results flowing from purely scientific 

 investigation, the modern achievements of Metal- 

 lurgy occupy a unique position. The events of 

 the Great War cannot fail to impress upon all 

 thinking minds the fundamental importance of 

 metallurgical products, since it is upon them in the 

 first instance that the very existence of the nation, 

 which has to rely upon military and naval equip- 

 ment, is seen to depend. In the arts of peace also, 

 the whole fabric of modern progress is based upon 

 an adequate and cheap supply of metals. So 

 much is this the case that it may fairly be said 

 that the principal technical advances of the last 

 hundred years could not have taken place had not 

 the inventions of Bessemer and Siemens created 

 the "age of steel." 



