PAQB 



CONTENTS 



Chapter X 



Megazooidal Individuals. The Monomegazooidal Indi- 

 viduals .... 82 



Summary of Continuity's evolution up to the Megazooidal Indi- 

 vidual — The alternation of Serial with Lateral Continuity — The 

 three classes of Megazooidal Individual — The first is the Mono- 

 megazooidal, and of it there are two types : 



(1) The Sea-anemone type — General description — Its megazooid 

 represents a multiplication of Continuously Zooidal Continuity 

 — Reasons supporting this view — Illustration of wax model — 

 The multiplication of Continuity must have occurred during 

 development. 



(2) The Medusoid type — Its Continuity fundamentally similar 

 to that of the Sea-anemone type — The two different plans ex- 

 plained — Hydrozoal colonies and the formation of the sporosac 

 — The evolution of the sporosac-gonoblastidium — The evolution 

 of the medusiform " gonophore " ; its structure — The sea-anemone 

 contrasted with the medusoid type of megazooid — The " open 

 ccelom." 



The Individual Medusa. 



Chapter XI 



The Discontinuously Megazooidal Individual. The 



Continuously Megazooidal Individual . . . 102 



Description of the Discontinuously Megazooidal Individual — 

 Aurelia as an example — Development of Aurelia — Interpretation 

 of the Continuity of the " strobila." 



The Continuously Megazooidal Individual — Compound Corals — 

 Megazooidal serial Continuity. 



Chapter XII 

 The Radiate Individual 107 



Exemplified by Echinodermata — These have not evolved on Evo- 

 lution's main road — The Starfish — Difficult to classify the Echino- 

 derms in terms of living Continuity ; they, however, show distinct 

 evidences of medusoid derivation — The closed ccelom ; the excre- 

 tory anus — Suggestions regarding the evolution of the sea-urchin 

 and starfish — Possibility of the Echinoderms being debased 

 Segmental Individuals of a kind. 



Chapter XIII 



Segmental Individuals 112 



Segmental Individuals have not been divided into segments, but 

 " built up " in segments — The significance of the " segment " — 

 Segmental organisms not necessarily Individuals — Discontinuous 

 and Continuous Segmental Individuals ; through the latter passed 

 the main road of Evolution. 



The Continuous Segmental Individual — Example, the Earthworm ; 

 brief description — Suggested theory of the Earthworm's evolution, 

 and explanation of the animal's Continuity — The different forms of 

 living Continuity have appeared as the fundamental Acquired 

 variations behind all living Evolution. 



