INTRODUCTION 9 



and there is here opened up an attractive field for 

 investigation, one which is far broader than a search 

 for new methods, for it is a great study in correlation, 

 materials, and generalship. He who gives us a more 

 objective proportioning of subjects, a more remunera- 

 tive treatment of a topic, or a new device for the logical 

 proof of a fundamental principle, renders to Education 

 a service like his to humanity who makes two blades 

 of grass grow where one grew before. Great advances 

 in this direction are being made ; to utilize these, and 

 even to add to them, has been a leading impulse in the 

 development of this work. 



The Botanical course of the near future must be 

 more adaptive to Education, more broad and represen- 

 tative of the Science, more economical of energy than 

 in the past. It remains to inquire how these improve- 

 ments may best be made. 



