CHAPTER VIII 







VITAL ACTION VERSUS NATURE-ACTION 



AS EXPRESSED IN ARCHITECTURAL 



PLANS AND IN PHYLOGENY 



Phylogeny Architectural Values as Expressed in Main Lines 

 and Collateral Lines of Evolution Architectural Problems and 

 the Increase of Power through Architectural Improvements The 

 Architecture of Inorganic Growth The Architecture of Organic 

 Growth The Architecture of Plant Life The Architecture 

 of Animal Life Unicellular Growth (Protozoa) Multicellula? 

 Growth Radial Structural Plan (Coelenterates of Jellyfish) Spir- 

 al Growth and False Radial Symmetry (Molluscs and Echino- 

 derms) . 



No individual can contain within itself all the dif- 

 ferent instruments, or do all the different things, essen- 

 tial to a higher life. That is clearly shown by the 

 evolution of plants and animals. Historically these 

 two towering life-kingdoms have been upbuilt side by 

 side on a united front. Each kingdom follows its own 

 distinctive structural plans and uses its own distinctive 

 materials, but both progress by common agencies, and 

 both are everywhere strengthened by interlocking bonds 

 of mutual services. 



The same is true on a smaller scale within each king- 

 dom, for at every level of their respective upbuilding, 

 divergent outgrowths are formed of unlike architec- 

 tural value. According to the nature of the materials 

 utilized, the patterns they form, and the manner of 

 assembling their materials, these varied genetic growths 



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