BIBLIOGRAPHY 647 



ROBERTS, H. F. AND FREEMAN, G. F. 



1910. A Quantitative Method for the Determination of 

 Hardness in Wheat. Kan. Agr. Exttt. Sta. Bui. 167. 



ROTMISTROV, V. G. 



1913. The Nature of Drought, According to the Evidence of 

 the Odessa Experiment Field. (Transl. from Russian.) 

 Odessa, Russia. 



SALMON, CECIL. 



1914. Sterile Florets in Wheat and Other Cereals. Jour. 

 Am. Soc. Agron. VI., 24-30. 



1915. Cereal Investigations on the Belle Fourche Experi- 

 ment Farm. U. S. Dept. Agr. Bui. 297. 



SALMON, CECIL AND CLARK, J. A. 



1913. Durum Wheat. U. S. Dept. Agr. F. B. 534. 

 SAUNDERS, W. 



1904. Wheat Growing in Canada. Repr. from Canad. Mag. 

 Apr. 1904. 



SCHAFER, E. G. AND GAINS, E. F. 



1915. Washington Wheats. Wash. Agr. Expt. Sta. Bui. 



121. 

 SCHULZ, AUGUST. 



1913. Die Geschichte der kultivierten Getreide. Halle. 

 SHEPPERD, J. H. 



1905. Root Systems of Field Crops. N. D. Agr. Expt. Sta. 

 Bui. 64. 



SOULE, A. M. AND VANNATTER, P. O. 



1901a. Winter Wheat. Tenn. Agr. Expt. Sta. Bui. 



1901b. Winter Cereals and Legumes. Tenn. Agr. Expt. 



Sta. XIV., No. 3. 

 TAYLOR, F. W. 



1909. Variety Tests of Oats, Barley, Wheat, and Rye. 



N. H. Agr. Expt. Sta. Bui. 145. 

 TEDIN, HANS. 



1908. tiber die Merkmale der zweizeiligen Gerste, ihre 

 Konstanz und ihren systematischen Wert. Sonderab- 

 druck, Deutsche, Landw. Presse. 



TEN EYCK, A. M. 



1900. A Study of the Root Systems of Cultivated Plants 

 Grown as Farm Crops. N. D. Agr. Expt. Sta. Bui. 64. 



1905. The Roots of Plants. N. D. Agr. Expt. Sta. Bui. 127. 

 TRABUT, L. 



1909. Contribution a 1'etude de 1'origine des avoines cul- 

 tivees. Compt. Rend. CXLIX., 227-229. 



1911. Observations sur 1'origine des avoines cultivees. 



