MEMOIR OF LAMARCK. 



55 



occurred to him regarding the general arrangement 

 of animals, and instead of presenting them in a 

 simple series, he divided them into two subramose 

 series, as follows : — 



Series of inarticulated 

 Animals. 



Series of articulated 

 Animals. 



A 



Infusoria 



I 



A 



Polypes 



Radiarii 



Ascidiens 



Vermes 



Epizoaria 



Acephala 



Mollusca 



