160 LUTHER BURBANK 



Now that the microscopist and the physicist 

 have opened the way for us into the microcosm, 

 we see that mere size is of no great significance 

 in the matter, and that there is ample opportu- 

 nity within the nucleus of the smallest germ cell 

 for an organization of molecules and atoms that 

 for all practical purposes may be at once as 

 complex and as definite as the visible structure 

 of the mature plant in which the germ cell 

 sprang or of that other mature plant into which 

 it will develop. 



The work, notwithstanding its 

 notable results, is only at its 

 beginning. 



