THE EVOLUTION OF CONTINUITY 157 



higher terrestrial plants, existing and extinct, were 

 derived. 



E. From the primitive Discontinuously Megazooidal 



would come the Continuously Megazooidal type, 

 as well as all the different species of the former, 

 extinct and existing. There is no evidence that 

 any terrestrial Discontinuously Megazooidal Indi- 

 viduals ever obtained. 



F. The highest form of Continuity would then be reached 



by the compression of primitive Continuously 

 Megazooidal Continuity into primitive Segmental 

 in one direction, while in another Megazooidal 

 Continuity remained fixed to evolve species. 

 None of these apparently ever supplied the earth 

 with stock. 



G. It seems clear that from the primitive marine seg- 



mental type (or types it may be) many segmental 

 " sub-types " evolved greatly differing in size and 

 characters ; and it is probable that from these were 

 separately derived the chief original terrestrial 

 forms of segmental Individual. Thus, the centipede 

 is segmental, and so also is the bird, but it seems 

 unlikely that these share one common terrestrial 

 primitive ancestry or derivation. Each has been 

 derived from a distinct aqueous type, and the 

 common ancestor was probably megazooidal. 



In the above summary the Coenocytic and Radiate 

 Individuals are not included, as these have not evolved on 

 the main road of Continuity-multiplication. 



