Emil Truog 55 



Why risk with men your hard-won gold? 



Buy grain and sow; your Brother Dust 

 Will pay you back a hundredfold — 



The earth commits no breach of trust. 



REFERENCES 



1. Attoe, O. J., and Truog, E., Soil Sci. Soc Am. Proc, 10:81-86 (1945). 



2. Attoe, O. J., Soil Sci. Soc. Am. Proc, 11:145-149 (1946). 



3. Baldwin, Mark, Kellogg, Charles E., and Thorp, James, Soils and 

 Men, U. S. Dept. Agr. Yearbook (Washington, 1938) 979-1001. 



4. Byers, H. G., Kellogg, Charles E., Anderson, M. S., and Thorp, 

 James, U. S. Dept. Agr. Yearbook (Washington, 1938) 948-978. 



5. Bryan, O. C, Soil Sci., 15:23-35 (1923). 



6. , Soil Sci., 15:375-381 (1923). 



7. Evans, C. E., and Attoe, O. J., Soil Sci., 66:323-334 (1948). 



8. Jenny, Hans, Factors of Soil Formation (1st ed., New York, McGraw- 

 Hill Book Co., 1941). 



9. Kellogg, Charles E., The Soils That Support Us (New York, The 

 MacMillan Co., 1941). 



10. Magistad, O. C, Soil Sci., 20:181-225 (1925). 



11. Truog, E., Soil Sci. Soc. Am. Proc, 11:305-308 (1946). 



12. , Soil Sci., 65:1-7 (1948). 



