4 THE NATURE OF BOTANY 



as Horticulture, Forestry, and Farm Crops, and also a basis for 

 the study of the special botanical subjects. These special 

 subjects of Botany are not only very important to one who 

 makes a special study of Botany, but some phases of Morphology, 

 Plant Physiology, Plant Pathology, Systematic Botany, and 

 Ecology are important studies for agricultural students in certain 

 agricultural courses. Part I, this book, deals mainly with the 

 parts of plants as to structure and function and, therefore, 

 emphasizes the Morphology and Physiology of plants. But 

 structure and function as well as other aspects of plants, accom- 

 pany and explain each other and can not well be separated in an 

 elementary study of Botany. So the different phases of the 

 plant are studied as they occur in relation to each other and 

 without any designation as to whether or not the fact belongs to 

 Morphology, Physiology, or any other special phase of Botany. 

 Part II is devoted chiefly to a study of plants as to kinds, rela- 

 tionships, variations, heredity, evolution, and improvement. 



