in a popular way enough of it to render the subject perfectly easy 

 of comprehension to any and all readers. As Professor Atwater, the 

 Director of the Office of Experiment Stations, regards it as an auspi- 

 cious circumstance that the initial publication, issued under the 

 Secretary of Agriculture, is one relating to an enterprise in which 

 science joins hands with the art of agriculture in an effort to secure 

 the greater welfare of mankind, so does the hope appear also .per- 

 missible that the effort of German enterprise to lend its willing aid 

 and assistance to the great work undertaken by the United States, 

 may meet with a friendly reception. 



A list of the works and publications which furnished the material 

 for this compilation is appended at the end. More detailed informa- 

 tion can be obtained on application to the office of the 



GERMAN KALI WORKS, 

 < 



1416 F STREET, N. W. (Keilogg Building), 

 WASHINGTON, D. C. 



