THE VEGETABLE KINGDOM. 173 



The third division consists of the branching forms of sea 

 plants, of which the fucoides afford an example. 



The fourth division consists of terrestrial herbacea, which 

 are characterized by fully developed leaves. But the lower 

 forms of this general division also embrace lichens, mosses, 

 fungi, etc. 



The fifth division consists of arborescent cryptogamia, or 

 of those perennial plants in which the organs of fructification 

 are concealed. 



The sixth division consists of the arborescent monocotyledon- 

 ous, or of those flowering trees whose seed has but one lobe ; and 



The seventh division consists of the arborescent dicotyledo- 

 nous, or of those flowering trees whose seeds have two lobes, 

 and which are the most perfect forms of the vegetable king- 

 dom. 



This comprehensive classification, though new, is in accord- 

 ance with the general order of succession in vegetable crea- 

 tions as indicated in fossilology, and is therefore natural. 

 Each one of these divisions, of course, is subject to sub-classi- 

 fications, which sometimes run parallel with each other ; but 

 an herbaceous and arborescent plant which possess the same 

 number of stamins, pistils, or cotyledons, evidently should not 

 simply on that account, be placed in absolutely the same class 

 or order. 



That it may the more clearly be perceived that this classifi- 

 cation conforms to the serial and correspondential law hereto- 

 fore unfolded, we will reduce it to the following form : 



PRIMARY TRINITY. SECONDARY TRINITY 



( Marine forms.) 



1. Radical fiber. 



2. Simple stem, 



3. Branching. 



( Terrestrial forms. ) 



4. Terrestrial herbacea (leafing.) 



5. Arborescent cryptogamia. 



6. Flowering monocotyledonous. 



7. Flowering dicotyledonous. 



