2 BULLETIN" 551, U. S. DEPARTMENT OF AGRICULTURE. 



rocks of the Rocky Mountains and deposited over extensive foot slopes, modified in 

 places by residual material from underlying sandstone. It is adapted to fruit and 

 truck crops where not too loose and subject to leaching. The spot where this sample 

 was taken had been cultivated, but supported only weeds at the time the sampling 

 was done. Heavy crops of oats and alfalfa were growing on near-by fields. The 

 sample is typical. 



2. Colorado sand, subsoil of No. 1, depth 14 to 36 inches. 



3. Oswego silt loam. Two miles northwest of Manhattan. Kans. Depth to 14 

 inches. This is a dark-gray soil occupying level to gently rolling upland prairies. 

 It is of residual origin and derived from shale, with occasional interbedded layers of 

 sandstone or limestone and in places outcrops of bituminous coal. This sample was 

 taken from a woodlot about 40 years old that had never been in cultivation. The 

 productiveness of this type is fair. 



4. Oswego silt loam. Subsoil of No. 3. Depth 14 to 38 inches. 



5. Knox silt loam. T. 52 N., R. 34 W., 2 miles north of Farley, Mo. Depth to 

 14 inches. This soil is formed from wind-deposited glacial material. It occupies 

 rolling to hilly areas which originally supported a hardwood timber growth. The 

 sample was taken on a high bluff from a field supporting a fair growth of clover. This 

 type produces good yields of wheat, corn, clover, and grass. 



6. Knox silt loam. Subsoil of No. 5. Depth 14 to 36 inches. 



7. Memphis silt loam. Five miles southwest of Granada, Miss. Depth to 6 

 inches. This type occupies uplands and is subject to serious erosion. It is a pro- 

 ductive soil. 



8. Memphis silt loam. Subsoil of No. 7. Depth 6 to 36 inches. 



9. Memphis silt loam, smooth phase. Five miles northwest of Granada, Miss. There 

 is very little difference between this soil and No. 7, except the difference in topog- 

 raphy indicated by the name. This sample is a shade lighter than the typical. The 

 subsoil is the same as that of typical specimens. The locality would indicate the 

 close relationship between the soils. The productivity is good. 



10. Memphis silt loam, smooth phase. Subsoil of No. 9. Depth 6 to 36 inches. 



11. Cahaba fine sandy loam. Three miles northwest of Fort Gaines, Ga. Depth 

 to 12 inches. This type is alluvial in origin and occupies the older and higher 

 terraces along the larger streams in the Coastal Plain of the Gulf States. It is a very 

 important agricultural soil. The sample is typical, with the exception that the 

 soil is somewhat too brown and the subsoil is nearly as red as the Orangebxug. 



12. Cahaba fine sandy loam. Subsoil of No. 11. Depth 12 to 36 inches. 



13. Cahaba very fine sandy loam. Minden, La. Depth to 12 inches. This 

 soil is formed in the same way as the Cahaba fine sandy loam, and except for its finer 

 texture has the same characteristics. Soil and subsoil are typical. 



14. Cahaba very fine sandy loam. Subsoil of No. 13. Depth 12 to 36 inches. 



15. Norfolk sand. Near Montrose, S. C. Depth to 8 inches. This type is formed 

 from worked-over material coming from the higher-lying provinces. It is not pos- 

 sible to trace its origin to any particular rock or formation. This type is not pro- 

 ductive except when heavily fertilized. The sample analyzed was typical as regards 

 the soil, but the subsoil was not so yellow as the typical subsoil. 



16. Norfolk sand. Subsoil of No. 15. Depth 8 to 36 inches. 



17. Orangeburg sand. One mile east of Day School, Terrell County, Ga. Depth 

 to 10 inches. This type is formed from the worked-over material of the higher 

 provinces. Its reddish color is characteristic. The subsoil is a reddish sand under- 

 lain at a depth of 3 feet or more by a reddish sandy clay. It is not productive, except 

 where it is well fertilized. The sample is typical. 



18. Orangeburg sand. Subsoil of No. 17. Depth 10 to 36 inches. 



19. Orangeburg sandy loam. Two miles east of Fort Gaines, Ga. Depth to 12 

 inches. The type consists of a medium grayish brown to reddish-brown sand or 

 light sandy loam, from 4 to 5 inches deep, resting on a red sandy clay subsoil usually 



