SURVEYS BY THE UNITED STATES BUREAU 



1.33 



to corn. The sandy loam and fine sandy loam, while not so well adapted to 

 general farming as the heavier soils, are quite productive and have a wide crop 

 adaptation. The sand and fine sand are well suited to truck crops, but give 

 rather uncertain yields of general farm crops. 



"The acreage of the types so far encountered is as follows : 



AREA AND DISTRIBUTION OF THE SOILS OF THE MARSHALL SERIES 



1 The soil mapped as Marshall gravel in Pontiac area, Michigan, is Miami 

 gravelly sand. 



2 Mapped as Miami silt loam in Clinton and St. Clair counties, Illinois, and as 

 Fresno fine sandy loam in Lower Arkansas Valley area, Colorado. 



3 The soil mapped as Miami (now Marshall) black clay loam in the Toledo area, 

 Ohio, is Clyde clay. 



Miami series (glacial and loessial regions). "The Miami series is one 

 of the most important, widely distributed, and complete soil series that has 

 been established. The series is characterized by the light color of the surface 

 soils, by derivation from glacial material, and by being timbered either now 

 or originally. The heavier members of the series are better adapted to wheat 



