RELATIONSHIP OF SPECIES. 261 



in any of the forms are of value in probably showing the true 

 relationship, and might be considered important enough to turn 

 the scale in this direction. 



5. That parallelism and convergence may take place as 

 regards structure (a). 



6. But that whether these two tendencies of evolution take 

 place as regards the bringing together of divergent germ plasms 

 (b) is perhaps not quite so apparent. 



7. That the facts brought to light concerning the separate 

 evolution of similar forms suggest parallelism to a wider extent 

 than has been credited, and may alter our conception (genealogi- 

 cally) of the Eelationship of Species. 



8. That, while segregating characters in hybrids appear of 

 varietal value, intermediate ones suggest evolution of species. 



