CLASSIFICATION. 3S5 



symbolized their respective degrees of divergence from the 

 form of simple, undifferentiated organic matter; which we 

 may regard as their common source. Within each group, 

 the remoteness from the local centre represents, in a rough 



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VE RTEIB'RATA 



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A N N y L 9 S. A 



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M O L L U S C A 



lamttiibra. 



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CCEL E N TE1RATA 



way, the degree of departure from the general plan of the 

 group. And the distribution of the sub-groups within each 

 group, is in most cases such that those which come nearest 

 to neighbouring groups, are those which show the nearest 



