SURVEYS BY THE UNITED STATES BUREAU 133 



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 



SOIL NAME 



STATES IN WHICH EACH TYPE HAS BEEN FOUND 



TOTAL AREA 

 (Acres) 



Marshall stony loam 

 Gravel * . . . 

 Gravelly loam . 

 Sand .... 

 Fine sand . . 



Sandy loam . . 

 Fine sandy loam 

 Loam .... 



Silt loam 3 



Clay loam 

 Black clay loam 3 



Clay .... 

 Total . 



North Dakota, South Dakota .... 



Minnesota, North Dakota 



Kansas, Minnesota, NorthDakota, Wisconsin 



Indiana, Iowa, Wisconsin 



Indiana, Iowa, Minnesota, Nebraska, North 

 Dakota 



Illinois, Indiana, Kansas, Minnesota, South 

 Dakota . . ' 



Indiana, Minnesota, Nebraska, North Da- 

 kota 



Illinois, Indiana, Iowa, Michigan, Minnesota, 

 Nebraska, North Dakota, South Dakota, 

 Wisconsin 



Colorado, Illinois, Indiana, Iowa, Kansas, 

 Louisiana, Minnesota, Missouri, Nebraska, 

 North Dakota, Wisconsin 



Iowa, Minnesota, North Dakota, Wisconsin 



Illinois, Indiana, Iowa, Michigan, Minnesota, 

 North Dakota, Ohio, South Dakota, Wis- 

 consin 



North Dakota . 



84096 



2560 



106816 



52736 



261440 



1680832 



4454470 

 600320 



572176 

 76800 



8057686 



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 



