636 BOTANICAL OPPORTUNITY. 



to the task iu each case, and indomitable perseverance and ceaseless 

 activity. Great as the value of facilities is, they are merely means to 

 an end. They accomplish nothing themselves. Hence, though it is 

 certain that the most voluminous and, perhaps, the most comprehensive 

 results, and those resulting from the performance of coherent experi- 

 ments extending through a long series of years, will come from the 

 great centers of research, there is no reason why qualitative results 

 equal to the best may not continue to come, as they have in the past, 

 from isolated workers, to the rounding out and completion of whose 

 studies the facilities of the larger institutions will be more and more 

 applicable as the problems of equipment are worked out. 



