712 TECHNICAL CHEMISTRY 



To Henry Carrington Bolton (1843-1903) is due the credit for the series of bibli- 

 ographies of the literature of the chemical elements that have been published 

 by the Smithsonian Institution. His own memory will always be worthily pre- 

 served by the splendid Bibliography of Chemistry in four octavo volumes, an 

 important section of each of which is devoted to technical chemistry. 



The records of the past give abundant hope for the future. 



