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arise only from that tendency to progressive causation between 

 the spiritual properties, which when the change is related with, 

 is followed by corresponding changes of the structures. 



67. If, without making any reference to the spiritual agency, 

 we should say that one modification of the structure succeeds to 

 another, until some final state was accomplished, we should then 

 express no more than we see; but our inferences teach us to 

 make this reference. We say in the gross, the tumor has a cer- 

 tain predisposition; analytically, we say the spirit which precedes 

 and governs the textures, has a certain predisposition; pursuing 

 the analysis further, we say this predisposition is constituted by 

 latent causes, by spiritual properties, possessed, but, in respect of 

 their relation with the structures, informal. 





