68 LUTHER BURBANK 



These facts being known, we know how to 

 proceed and, difficult as it may appear, it is the 

 only route by which any permanent advances 

 can, or ever will, be made. When these two 

 lines of action are combined^ all the best quali- 

 ties of any type are brought forth and gradually 

 fixed — and the field for improvement is limit- 

 less. 



