As to the vegetable kingdom, there is here, so far as we can discover,
only a duality of principle, viz: the material body and a modified phase
of electro-vitality. These component parts appear to sustain to each
other, in the vegetable, relations quite analogous to those of the
corresponding parts in the animal. But here the _mental_ part is
wanting; and consequently there is no consciousness, sensation, nor
will; and the electro-vital action is guided in its elaborate and
beautiful operations for the forming and developing of the plant, and in
all its vital functions, by the all-pervading mind of God.