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, evolution, and heredity. 
