PUBLICATIONS OF THE UNITED STATES DEPARTMENT OF AGRI- 
CULTURE RELATING TO SOILS. 
AVAILABLE FOR FREE DISTRIBUTION BY THE DEPARTMENT. 
Choice of Crops for Alkali Lands. (Farmers’ Bulletin 446.) 
Management of Muck-Land Farms in Northern Indiana and Southern Michigan. 
(Farmers’ Bulletin 761.) 
Potash Salts and Other Salines in the Great Basin Region. (Department Bul- 
letin 61.) 
Experiments in the Production of Crops on Alkali Land on the Huntley Rec- 
lamation Project, Montana. (Department Bulletin 135.) 
Organic Constituents of Soils. (Soils Circular 74.) 
FOR SALE BY THE SUPERINTENDENT OF DOCUMENTS, GOVERNMENT PRINTING 
OFFICE, WASHINGTON, D. C. 
Renovation of Worn Out Soils. (Farmers’ Bulletin 245.) Price, 5 cents. 
Soil Fertility: Address delivered before Rich Neck Farmers’ Club. (Farmers’ 
Bulletin 257.) Price, 5 cents. 
Soil Conservation. (Farmers’ Bulletin 406.) Price, 5 cents. 
Action of Manganese in Soils. (Department Bulletin 42.) Price, 5 cents. 3 
Inorganic Composition of Some Important American Soils. (Department Bul- 
letin 122.) Price, 5 cents. 
Use of Radioactive Substances as Fertilizers. (Department Bulletin 149.) 
Price, 5 cents. 
Soil Erosion in the South. (Department Bulletin 180.) Price, 10 cents. 
Extension Course in Soils for Movable Schools of Agriculture. (Department 
Bulletin 355.) Price, 10 cents. 
Reclamation of Alkali Soils. (Bureau of Soils Bulletin 34.) Price, 10 cents. 
The Action of Water and Aqueous Solutions Upon Soil Carbonates. (Bureau 
of Soils Bulletin 49.) Price, 10 cents, 
Soils of the United States, Based Upon the Work of the Bureau of Soils. 
(Bureau of Soils Bulletin 55.) Price, 45 cents. 
The Role of Oxidization in Soil Fertility. (Bureau of Soils Bulletin 56.) 
Price, 10 cents. crake: 
A Study of Crop Yields and Soil Composition in Relation to Soil Productivity. 
(Bureau of Soils Bulletin 57.) Price, 20 cents. 
Some Effects of a Harmful Organic Soil Constituent. (Bureau of Soils Bulle- 
tin 70.) Price, 20 cents. 
Chemical Nature of Soil Organic Matter. (Bureau of Soils Bulletin 74.) 
Price, 10 cents. 
The Color of Soils. (Bureau of Soils Bulletin 79.) Price, 5 cents. 
A Beneficial Organic Constituent of Soils: Creatinine. (Bureau of Soils Bulle- 
tin 83.) Price, 10 cents. 
Modification of the Method of Mechanical Soil Analysis. (Bureau of Soils 
Bulletin 84.) Price, 15 cents. 
A Study of the Soils of the United States. (Bureau of Soils Bulletin 85.) 
Price, 25 cents. 
Nitrogenous Soil Constituents and Their Bearing on Soil Fertility. (Bureau of 
Soils Bulletin 87.) Price, 15 cents. 
26 
