18 PRICE LIST 46 TTH EDITION 



SOILS BUREAU BULLETIN Continued. 



60. Preliminary report on Volusia soils, their problems and management. 



Paper, 20c. 



61. Electrical bridge for determination of soluble salts in soils. Paper, 15c. 



62. Fertilizers for cotton soils. Paper, 5c. 



63. Reference list on electric fixation of atmospheric nitrogen and use of 



calcium cyanamid and calcium nitrate on soils. Paper, lOc. 



64. Fertilizers for corn soils. Paper, 5c. 



65. Fertilizers for potato soils. Paper, 5c. 



66. Fertilizers for wheat soils. Paper, lOc. 



67. Fertilizers on soils used for oats, hay, and miscellaneous crops. 



Paper, lOc. 



68. Movement of soil material by wind: with Bibliography of eolian 



geology. Paper, 35c. 



69. Review of phosphate fields of Idaho, Utah, and Wyoming, with spe- 



cial reference to thickness and quality of deposits. Paper, lOc. 



70. Some effects of harmful organic soil constituent. Paper, 20c. 



71. Soil erosion. Paper, 35c. 



72. Barium in soils. Paper, 5c. 



73. Studies in soil oxidation. Paper, lOc. 



74. Chemical nature of soil organic matter. Paper. lOc. 



75. Lawn soils. Paper, 15c. 



76. Review of phosphate fields of Florida. Paper, 5c. 



77. Organic compounds and fertilizer action. Paper, 5c. 



78. Use of soils east of Great Plains region, based upon work of bureau 



.to Jan. 1010. Paper, 50c. 



79. Color of soils. Paper, 5c. 



80. Examination of soils for organic constituents, especially dihydroxy- 



stearic acid. Paper, lOc. 



81. Report on natural phosphates of Tennessee, Kentucky, :. d Arkansas. 



Paper, lOc. 



82. Effect of soluble salts on physical properties of soils. Paper, 15c. 



83. Beneficial organic constituent of soils, creatinine; Introduction, Im- 



portance of beneficial soil constituents; 1, Isolation of creatinine 

 from soils; 2, Origin of creatinine 'in soils; 3, Effects of creatinine 

 on growth and absorption. Paper, lOc. 



84. Modification of method of mechanical soil analysis. Paper, 15c. 



85. Study of soils of United States. Paper, 25c. 



86. Studies in soil catalysis. Paper, 5c. 



88. Some organic soil constituents. Paper, lOc. 



89. Chemistry of steam-heated soils. Paper, 5c. 



90. Occurrence and nature of carbonized material in soils. Paper, lOc 1 . 



91. Microscopic determination of soil-forming minerals. Paper, lOc. 



92. Wells and subsoil water. Paper, 20c. 



93. Field records relating to subsoil water. Paper, 5c. 



94. Occurrence of potassium salts in salines of United States. Paper, 15c. 



95. Utilization of acid and basic slags in manufacture of fertilizers. 



Paper, 5c. 



96. Soils of United States. Paper, $1.00. [Last Bulletin of this series.] 



SOILS BUREAU CIRCULAR A 2G.4 : 



5. Bulk fermentation of Connecticut tobacco. Paper. 5c. 



15. Manurial requirements of Leonardtown loam soil of St. Mary County, 



Md. Paper, '5c. 



16. Manurial requirements of Cecil silt loam of Lancaster County, S. C. 



Paper, 5c. 



NOTE. In ordering publications from this List use the words of the title as far as the 

 first period, and all the composite number which follows the price. 



