CONTENTS. 



Page. 



Introduction 7 



Botany of the sunflower 8 



Origin and early history 8 



Development of varieties 9 



Botanical description 10 



Uses of the sunflower 10 



Medicinal uses 11 



Soil and cultivation 12 



Harvesting sunflower seed '. 12 



The sunflower in Russia 13 



Extracts from correspondence 14 



Investigations of sunflowers by State experiment stations 17 



Extracts from a New York report 17 



Results of experiments in Maine 18 



Results of work with sunflowers in Vermont 21 



Reports of work done on the Experimental Farms of Canada 22 



Analytical results 22 



Sunflowers for ensilage 23 



Cost of growing sunflowers .- . 24 



Experiments conducted by the Division of Chemistry 25 



Dimensions of sunflower plants 25 



Composition and character of seeds and other parts of the plant 26 



The ash of the sunflower plant 27 



Commercial manufacture of sunflower oil in the United States 28 



Summary 30 



5 



