THE RASPBERRY 251 



These representatives of a new species devel- 

 oped by hybridization under natural conditions 

 have obvious scientific interest even though they 

 failed to develop sufficient productivity to be of 

 commercial value. 



Let me repeat that natural hybrids are much 

 more numerous than is generally supposed. 



I have found them among other wild plants. 

 Especially are they to be observed among straw- 

 berries, blueberries, huckleberries, and California 

 lilacs (Ceanothus). I have elsewhere cited in- 

 stances of the hybridization of the tarweeds 

 and the mints. There can be no doubt that 

 some of our well-known species of to-day were 

 produced by nature in this way within recent 

 times. 



I have elsewhere observed, and I emphatically 

 repeat, that any theory of the origin of species 

 that does not recognize this among the methods 

 employed by nature for the production of new 

 species is altogether inadequate. 



ANOTHER NEW SPECIES THE 

 PHENOMENAL BERRY 



The result of thus mating the dewberry with 

 the little raspberry from an almost arctic 

 climate having proved so remarkable, almost 

 numberless tests were made in which the dew- 



