Vol. X JULY 30, 191Y No. 5 



JOURNAL OP 



AGRICULTURAL 

 RESEARCH 



CONTENTS 



Page 



Evaporation from the Surfaces of Water and River-Bed 



Materials --------- 209 



R. B. SLEIGHT 



Influence of Grading on the Value of Fine Aggregate Used 



in Portland Cement Concrete Road Construction - - 263 



F. H. JACKSON, Jr. 



PUBLISHED BY AUTHORITY OF THE SECRETARY OF AGRICULTURE, 



WITH THE COOPERATION OF THE ASSOCIATION OF AMERICAN 



AGRICLT.TLTIAL COLLEGES AND EXPERIMENT STATIONS 



WASMINGTON, D« C. 



VU*':wisc1CH : fJOVER^MENl FRINTIHO OFFICE ; IV'7 



