PART III. 



BOTANY. 



CHAPTER I. 



BOTANY is that branch of natural science which investigates 

 the nature and character of, and includes all knowledge in 

 relation to the vegetable kingdom. It treats of the structure, 

 habits, locality, uses, classification and nomenclature of every 

 species of plant known on the globe. 



Botany is divided, for the sake of convenience and method, 

 into PHYSIOLOGICAL and SYSTEMATIC: Physiological Botany 

 resolves itself into Anatomy, Morphology and Vegetable Phy- 

 siology. 



Anatomy treats of the organic structure and relations of all 

 the various parts of plants. 



Morphology treats of their form, symmetry, and arrange- 

 ment. 



Vegetable physiology treats of all the phenomena of the 

 vital functions, as absorption, exhalation, digestion, respiration, 

 circulation, germination, &c. 



Systematic botany is divided into botanical classification, 

 special descriptive botany, glossology, and geographical botany. 



