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relation or affinity belongs to all: organization, 1 
example, which is predicable of plants as well as of 
animals. Some additional affinity, indeed several 
affinities, are common to animals and not to plants. 
The former exert voluntary power to obtain food 
not in contact with their cuticle: and to move them- 
selves, while seeking it, for the greater part, from 
place to place, or to change their positions on seve- 
ral other occasions important to their well-being. 
They are altogether nourished by portions of animal 
or vegetable matter received into interior cavities, 
in which such matter is destined to undergo a pe- 
culiar change, digestion. Vegetables absorb fluids 
by roots; but however wide their general differ- 
ence, they possess many similar relations one with 
another of their own kind, and many analogous re- 
lations of their several kinds to various divisions of 
general creation, and to occasional changes in the 
condition of such divisions. For example; some 
animals are covered wholly or in part with soft fur, 
some with scales; some are nearly or wholly smooth, 
some are viscous, as eels. The verbascum, mullein, 
the fir cone, the tulip, the lychnis viscaria, or Ger- 
man catchfly, are familiar instances of similar di- 
versities among the families of plants. Some ani- 
mals require a continual supply of atmospheric air 
for the support of life, and die when immersed in 
water: some require constant immersion in water, 
and soon die on exposure to air. The same observa- 
tion may be extended to various tribes of plants. 
Many animals and many plants require a high at- 
ea 
