PART I 



PLANT STKUCTUKES 



FOE the convenience of study, we may consider the plant as 

 a machine consisting of many delicate parts. In order to under- 

 stand the working of this machine, it is first necessary to under- 

 stand the construction of the machine. Therefore, Part I of 

 this book is devoted to the study of the structure or anatomy of 

 the plant. 



