ON THE REWARDS OF PATIENCE 



to repeat here, even in epitome, what has else- 

 where been told in detail. Yet a few general 

 comments on methods and results may be of 

 interest. 



Also it may not be amiss, by way of summary, 

 to outline very briefly the chronological sequence 

 of the chief lines of endeavor of the period, now 

 approaching the termination of its third decade, 

 during which the attempt to develop improved 

 races of plants has been comprehensively carried 

 out. 



In the successive chapters that have told of the 

 different lines of endeavor, plants were naturally 

 grouped according to their botanical relations or 

 their economic uses, with only incidental reference 

 to the date of the experiment through which this 

 or that particular variety was developed. 



Perhaps, then, it will serve to coordinate the 

 work as a whole if we review in partial outline 

 the story of the endeavors of successive periods; 

 bearing in mind, of course, that many scores of 

 experiments were always being carried forward 

 simultaneously, and that many experiments that 

 achieved notable results at an early day, are still 

 being carried forward in the attempt to obtain 

 results even more notable. 



Taking the widest and most general view, it 

 may be said that the chief lines of investigation at 



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