COLLATERAL READINGS SUGGESTED: 



Article Botany in Encyclopaedia Britannica ; Gray's North Ameri- 

 can Flora, Structural and Systematic Botany, How Plants Grow, How 

 Plants Behave, and Statistics of the Flora of the Northern United 

 States, in Silliman's Journal, second series, vol. xxii ; Henslow's The 

 Origin of Floral Structures ; Wallace's Island Life, and Tropical and 

 Geographical Distribution of Plants and Animals ; Sachs's Sketch of 

 the Development of Botany from 1530 to 1860; Strasburger's Hand- 

 book of Practical Botany; Lester F. Ward's The Geographical Distri- 

 bution of Fossil Plants ; Grant Allen's The Evolutionist at Large ; 

 Lubbock's Flowers, Fruits, and Leaves. 



