Marsludl Series. Ill 



Marshall fine rani. — Dark brown to black, rather incoherent sand 

 of fine texture, 10 or 12 inches deep, resting on a lighter-colored 

 sand of about the same texture. Occupies low bluffs bordering 

 river flood plains. Surface is broken and rolling, and the drain- 

 age is apt to be excessive, especially where the sandy subsoil is 

 deep. Origin primarily glacial. Crop value varies greatly, depend- 

 ing mainly upon the condition as regards moisture. Is best adapted 

 to early truck crops and melons. It also produces, with the aid of 

 liberal manuring, very good yields of Irish potatoes. It has been 

 used successfully in the production of clover seed, although the 

 yield of hav is verv light. 



12 3 4 



Soil (2) 13 76 5 6 



Subsoil (2) 14 77 5 5 



Acres, 

 Story County, Iowa 13,376 



Marshall sandy loam. — A dark-brown to black compact sandy 

 loam about 10 inches in depth, resting on 6 inches of yellowish 

 loam, only less sandy than the surface soil, which is in turn under- 

 lain at from 16 to 36 inches below the surface ))y yellowish clay 

 containing a high percentage pf coarse sand and gravel. Rounded 

 pebbles and bowlders occur on the surface, while in the subsoil 

 partly decomposed calcareous nodules are found. Soil occupies 

 gently rolling prairie ridges — thought to be old shore lines — and 

 intervening depressions. The type is mainly of glacial origin. A 

 good general farming type, although in some local areas inclined 

 to be droughty. Average yields: Wheat, 12 to 20 bushels; oats, 

 20 to 35 bushels; flax, 12 to 15 bushels; potatoes, 100 to 125 bushels 

 per acre. 



12 3 4 



Soil (7) 27 38 20 9 



Subsoil (7) 26 33 24 14 



Acres. 



Brookings, S. Dak 93, 376 



Marshall, Minn « 4, 480 



Marshall loam. — Dark-brown to black loam 10 or 12 inches deep, 

 resting on a lighter colored loam or heavy loam. The deep sub- 

 soil consists of clay, sand, gravel, and bowlders mingled together 



"Mapped in part as Fairview sandy loam, which name will not be used here- 

 after. 



