CLASSIFICATION. 385 



symbolized their respective degrees of divergence from the 

 form of simple, undiffercntiated organic matter; which we 

 may regard as their common source. Within each group, 

 the remoteness from the local centre represents, in a rough 



* V &quot; . **ATV 



V E R T E B* R ATA 



Vift ^ 



\ / . . Crustace 



\ ArticMLa-tcL 



\ A N N U L 9 S m A 



\ gcclecida * f 



s \ x A/nnuloida 



Ptere/ieda * Cr[Juiltfuila. N ^ JZchlncdcrmat a.**,* 



.$$12*&quot;*&quot; \ ! / 



Gasttrfi/ierla. Putmonata \ / / 



mcnaci.0. . . \ I 



\ / / 



\ / 



MOLL US C A 



.* * Poly a oei /PROTOZOA 



f i S/itjigida Jnfusoria 



Sdrneca .* * 



CCE L E N TERATA 



Aetincxoa* 



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 



