24 LUTHER BURBANK 



3. Conscious selection toward definite 

 ends. In this way are formed superior 

 strains within the various species of 

 animals or plants. 



4. Crossing" between varieties, races, or 

 species to increase range of divergence, 

 to add or combine desirable traits, or to 

 eliminate others which may be objec- 

 tionable. This must be accompanied by 

 isolation to prevent panmixia or promis- 

 cuous breeding, and also by rigid selec- 

 tion directed to a predetermined definite 

 end. Such a series of processes makes 

 breeding a fine art, one yet in its infancy, 

 no doubt, but in its possibilities the 

 noblest of all arts. 



No breeder has any patent on his 

 methods. These are open as the day to 

 all the world and success depends not on 

 tricks but on the brains and skill put 

 into the work. Since the dawn of civili- 

 zation thousands of men have used these 



