INTRODUCTION TO PART II 



THE principles that have controlled the construc- 

 tion of these outlines have been set forth fully in the 

 preceding chapters, and in synopsis are as follows : 

 The ideal is to guide the student to the optimum 

 return of sound scientific training and thorough bo- 

 tanical knowledge for the time and strength he can 

 put into the work. They are hence a study in edu- 

 cational economy, with three principal phases : first, 

 the selection of the most vital and illuminating top- 

 ics ; second, a synthetic treatment of the science, 

 with topics arranged in such an order as to throw 

 most light upon one another ; third, the presentation 

 of the topics in such a form as to draw out the stu- 

 dent's faculties the most quickly and thoroughly. 

 They have not been worked out regardless of prac- 

 tical considerations, but with constant account of them, 

 and with special effort to show how the restraints 

 imposed by them may be minimized. 



The general plan of the entire course is the double 

 one used by many teachers : a first division treats 

 of the principles of anatomy, morphology, physiol- 

 ogy, ecology ; and a second, of the structure and 



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