PHYSIOPHILOSOPHICAL SYSTEMS. 



347 



MOLLUSCA. 



Pteropoda. 

 Acephala. 

 P. Rudes. \^ Brachiopoda. 



P. Vaginati. 

 ACRITA. 

 Agastria. 



P. Natantes. / \ Amphibia. 



Intestm; / ANIMALIA \ Pisces. 



Reptilia. 



Aves. 

 VERTEBRATA. 



Mammalia. 



Fistuuda. 

 Acalephidaa. 



RADIATA. 



Eclainidrc. 

 Medusidse. 



Stelleridse. 



Ametabola. 



Mandibulata- 

 ANNULOSA. 

 Crustacea. 



Haustellata. 

 Arachnids. 



"We must, in the first instance, look to the above tabu- 

 lar disposition of all animals, as forming themselves col- 

 lectively into one great circle, which circle touches or 

 blends into another, composed of plants, by means of the 

 ' least organized beings of the vegetable kingdom'. Next 

 we are to look to the larger component parts of this great 

 circular assemblage. We find it, in accordance with the 

 third proposition, to exhibit five great circles composed of 

 the MOLLUSCA, or shell-fish ; ACRITA, or polyps ; RADIATA, 

 or star-fish; ANNULOSA, or insects; and VERTEBRATA, or 

 vertebrated animals; each passing or blending into each 

 other by means of five other groups of animals, much 

 smaller, indeed, in their extent, but forming so many con- 



