VI DEPARTMENT OF AGRICULTUBE BULLETINS 51-75. 



Department Bulletin No. 58. — Five Important Wild-duck Foods. ^age. 



Delta duck potato 1 



Wapato 6 



Chufa 8 



Wild millet 11 



Banana water lily 14 



Department Bulletin No. 59. — The Tobacco Splitworm. 



Introduction 1 



Experiments on the specific status of the two forms . . ^ 1 



Distribution 2 



Common names 3 



Food plants 3 



Food habits 3 



Description of stages 4 



Life history. 5 



Seasonal history 6 



Parasites 7 



Remedial measures • 7 



Department Bulletin No. 60. — The Relation op Cotton Buying to 

 Cotton Growing. 



Introduction 1 



The need of discrimination in buying 2 



Varieties deteriorate by losing uniformity 3 



Careful farmers deserve the higher prices 5 



Discrimination in buying more important than high prices 6 



Development of new long-staple districts 8 



Commercial causes of deterioration of cotton 11 



Deterioration of Sea Island cotton crop 12 



Limitations of the present system of buying 14 



Injustice of the present system of buying 15 



Uniformity best determined by field inspection 16 



Field inspection in the interest of manufacturers 17 



Other causes of uneven fiber 18 



Economic pecuUarities of the cotton industry 19 



Conclusion 20 



Department Bulletin No. 61. — Potash Salts and Other Salines in the 

 Great Basin Region. 



Geochemical conditions 1 



Sources of salines 14 



Reactions in the zone of weathering 20 



Collection of saUnes by surface waters 27 



Saline deposits 32 



Structural development of a desert basin ^ 37 



Playas '. 39 



Buried deposits of salines 60 



SaUnes in present lakes 64 



Conclusion 66 



Appendix 69 



Department Bulletin No. 62. — Tests op the Waste, Tensile Strength, 

 and Bleaching Qualities op the Different Grades op Cotton as 

 Standardized by the United States Government. 



Origin and location of the experiments 1 



Cotton used in the experiments 2 



Mill conditions of the experiments 3 



