CLASSIFICATION BY THE BUREAU OF SOILS 111 



or reddish brown to black in color. These soils are very productive. 



Puget Series. The soils are brown to grayish brown or drab 

 and frequently mottled with iron stains. The heavier members are 

 of rather compact and tenacious structure, containing a large 

 amount of organic matter, and are usually friable under cultiva- 

 tion. The subsoils are light brown to drab or gray marked with 

 iron stains. They occupy flood plains in, the vicinity of estuaries 

 or stream outlets. They are very productive and are classed among 

 the very best soils of the region. Oats, forage, hay and truck crops 

 and fruits all do well. 



Sacramento Series. The soils are dark gray, drab or black, 

 often contain large quantities of organic matter and are six feet 

 or more in depth. The series occupies stream bottoms and river 

 flood plains. Alkali salts are sometimes encountered. Where pro- 

 tected by levees, the soils are productive and adapted to the inten- 

 sive production of sugar beets, truck crops, beans, hops, potatoes 

 alfalfa, and prunes, pears and other fruits. 



Salem Series. The soils are dark brown to black in color and 

 underlain by compact reddish yellow subsoils or by sands and 

 gravels. They are recent alluvial deposits derived from basaltic 

 rocks, drains, truck crops and hops are the principal crops. 



QUESTIONS 



1. What is a soil Region? A Province? 

 2. How many of each ? 



3. Define a soil series. 



4. Define a soil class. 



5. What is a soil type? 



0. Where does the Cecil series occur? 



7. What are its characteristics? 



8. What are the characteristics of the Do Kalb series? 



9. Give characteristics of Clarksville series. 



10. Give characteristics of Carrington series. 



11. Give characteristics of De Kalb scries. 



12. Give characteristics of Marshall series. 

 1.3. (Jive characteristics of Miami scries. 



14. Give characteristics of Volusia series. 



15. Give characteristics of Williams series. 

 Ifi. Give characteristics of Norfolk series. 



17'. Give characteristics of Orangeburg series. 



18. Where is the Great Plains region? Give two series. 



10. Where is the Arid Southwest region? 



20. Locate the Piedmont Plateau Province. 



21. Locate the Appalachian Mountain and Plateau Province. What are 



the two principal series? 



REFERENCE 



Marbut. C. F., Bennett. H. TT., Lapham, .T. E.. and Lapham. M. TI.. Bulletin 

 9fi, Bureau of Soils I T . S. D. A. 



