MINERAL COMPOSITION" OF CROPS 91 



SOURCES ©F UNPUBLISHED MATERIAL 



In May of 1937 Dr. James T. Jardine, Director of Research, 

 United States Department of Agriculture, invited the workers in the 

 State agricultural experiment stations and in the Department to 

 participate in a cooperative survey of unpublished data on the 

 relationship of the chemical composition of plants to the soils in 

 which they were grown. A large amount of material was received, 

 and reference has been made in this report to this unpublished 

 material as follows: 



(lx) Bailey, C. H., and Hutchinson, Willis S. Minn. Agr. Exp. Sta. Data 



obtained through the U. S. Dept. Agr., Bur. of Home Econ. 

 (2x) Bizzell, J. A. N. Y. (Cornell) Agr. Expt. Sta. 

 (3x) Brannen, C. O. Ark. Agr. Expt. Sta. 



(4x) Burnham, Mary C, Marks, Catherine G., Taylor, Dona G., and 

 Gerhardt, Warda G. 



THE EFFECT OF VARIOUS FACTORS ON THE VARIATION IN THE CALCIUM 



and phosphorus contents of peas. Theses, Wis. Univ. Sub- 

 mitted for this survey by W. H. Peterson, Wis. Agr. Expt. Sta. 

 (5x) Coleman, J. M., and Ruprecht, R. W. 



THE EFFECT OF FERTILIZERS AND SOIL TYPES ON THE MINERAL CONTENT OF 



plants. Thesis, Fla. Univ. Data obtained through the U. S. Dept. 

 Agr., Bur. Home Econ. 

 (6x) Culbertson, C. C. Iowa Agr. Expt. Sta. 

 (7x) Dutcher, R. Adams, and Haley, D. C. 



Pa. Agr. Expt. Sta. Data obtained through the U. S. Dept. Agr., Bur. 

 Home Econ. 

 (8x) Eisenmenger, Walter S. Mass. Agr. Expt. Sta. 

 (9x) Fletcher, S. W. Pa. Agr. Expt. Sta. 

 (lOx) Fort, C. A. 



EFFECT OF LOCATION AND VARIETY ON THE MINERAL CONTENT OF SUGAR- 

 CANE. U. S. Dept. Agr., Bur. Chem. and Soils, 

 (llx) Heller, V. G. Okla. Agr. Expt. Sta. 

 (12x) Hof, Josephine K., and Schwoegler, June K. 



THE MANGANESE AND COPPER CONTENTS OF WISCONSIN POTATOES. Theses, 



Wis. Univ. Data submitted by W. H. Peterson, Wis. Agr. Expt. Sta. 

 (13x) Jones, H. D. Mimeograph 1934. Submitted by the U. S. Dept. Agr., 



Bur. Home Econ. 

 (14x) McHargue, J. S. Ky. Agr. Expt. Sta. 

 (15x) Magistad, O. C. Hawaii Agr. Expt. Sta. 

 (16x) Moore, C. C. U. S. Dept. Agr., Div. Chem. 

 (17x) Pierre, W. H. W. Va. Agr. Expt. Sta. 

 (18x) Robinson, W. O. U. S. Dept. Agr., Bur. Plant Indus. 

 (19x) Smith, John B. R. I. Agr. Expt. Sta. 

 (20x) Tobiska, J. W. Colo. Agr. Expt. Sta. 

 (21x) Vandecaveye, S. C. Wash. Agr. Expt. Sta. 

 (22x) Weathers, E. K. Tenn. Agr. Expt. Sta. 

 (23x) Wiley, Harvey W., Moore, C. C, and Ewell, E. E. 



COMPARATIVE FERTILITY AND NITRIFYING POWER OF SOILS. Unpublished 



manuscript. U. S. Dept. Agr., Bur. Chem. 



