12 



Calif. 



Fla. 



Hawaii 



111. 



Kans. 



Md. 



Investigation of Mineralogical Associations in California 

 Soils as Affected by Pedological Factors and Their Significance 

 in Detailed Soil ClassificationT (l) Aim clay mineral investi- 

 gations toward direct support of soil surveys in state in classi- 

 fication and correlation operations; and (2; conduct secondary 

 investigations with fundamental aspects of clay mineral forma- 

 tion from primary parent minerals, their stability under different 

 environmental conditions and their properties. 

 Soils, Plant Nutr. 1754 Coop. SCS 



Mineralogical Properties of Representative Florida Soils. 

 Identify the mineralogical character and ascertain chemical and 

 physical properties of inorganic colloid and silt fractions in 

 representative Florida soils. 



Soils 347 (S-U) 



The Identification of the Secondary Minerals Developed Under 



the Tropical Soil 'feathering Occurring in the Soils of the 



Hawaiian Islands. To separate and identify the actual compounds 

 or chemical identities present in the colloids of representative 

 soils. 



Soils 130 



Characterization of Loess in Illinois, (l) Learn mineralo- 

 gical composition and chemical and physical properties of loess 

 derived from different sources; (2) establish the origin of clay 

 minerals found in loess; and (3) develop Improved methods for 

 determining size distribution and other physical characteristics 

 of silts and clays. 



Agron. 15-366 



A Study of Soil Clay Minerals and Their Decomposition Products 

 and the Effect of Soil Solution on their Formation and Disintegra- 

 tion. To study the decomposition and recombination of the decom- 

 position products of soil clay minerals, including a study of 

 soil conditions required to form specific minerals, from the 

 disintegration products resulting from weathering. 



Phys., Chem. 229 



Mineralogical Studies of Maryland Soils. To (l) originate 

 sttriy of varieties and proportions of minerals in important 

 Maryland soils; (2) study factors responsible for formation of 

 Maryland soils and effect on soil fertility and productivity; 

 and (3) improve present methods of mineralogical analysis in 

 view of obtaining more accurate quantitative determinations of 

 clay minerals. 



Agron. 0-54 Coop. SCS, USDI-Geo-Svy. 



