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suggest a few topics for research, almost any one of which would 

 afford an hour's entertainment or profitable discussion. The in- 

 vestigation of grasses has engaged the attention of the ablest men 

 of science, and the study of their development, their classifica- 

 tion, their inter-relationships, and their relation to other plants 

 and to man opens a field to philosophy. They constitute the 

 wealth of nations ; they feed the world ; they minister to the 

 higher esthetic tastes of mankind by their graceful and varied 

 beauty ; they heal the sick, and make glad the well. 



