RICHARD BRYANT DOLE. 



May 8, 1SS0 — January 21, 1917. 



After this volume was in page proof and Mr. Dole had corrected 

 the proof of the article by him and Mr. Chambers, his scientific 

 colleagues and other friends were shocked and grieved by his death 

 on January 21, at the end of a brief illness. Although he was only 

 36 years old at the time of his death, he had made a notable scientific 

 record. He was active in many kinds of chemical work, but devoted 

 his attention especially to a study of the composition and quality of 

 the surface and ground waters of the United States. The prosecution 

 of these investigations led him to consider problems of the chemical 

 denudation of the continents and the transfer of material by running 

 waters to the ocean. He recognized the value of these results in the 

 study of the degradation of the continents and the history of the ocean, 

 and his is the most monumental contribution to the subject as yet 

 made by any man, but he had not completed the great task he had set 

 himself. We mourn the loss of a genial, loyal friend, and an able 

 scientific investigator whose place will long remain unfilled. 



Thomas Wayland Vaughan. 



