ious region of
the mind at this point, for we shall have much to do with it later on. It
is mentioned here in order to show that the enlargement or development of
consciousness is not so much a matter of "growth" as it is an
"unfoldment"--not a new creation or enlargement from outside, but rather
an unfoldment outward from within.

From the very beginning of Life--among the Particles of Inorganic
Substance, may be found traces of something like Sensation, and response
thereto. Writers have not cared to give to this phenomenon the name of
"sensation," or "sensibility," as the terms savored too much of "senses,"
and "sense-organs." But Modern Science has not hesitated to bestow the
names so long withheld. The most advanced scientific writers do not
hesitate to state that in reaction, chemical response, etc., may be seen
indications of rudimentary sensation. Haeckel says: "I cannot imagine
the simplest chemical and physical process without attributing the
movement of the material particles to unconscious sensation. The idea of
Chemical Affinity consists in the fact that the various chemical elements
perceive the qualitative differences in other elements and experience
'pleasure' or 'revulsion' at contacts with them, and execute their
specific movements on this ground." He also speaks of the sensitiveness
of "plasm," or the substance of "living bodies," as being "only a
superior degree of the general irritability of substance."

Chemical reaction, between atoms, is spoken of by chemists as a
"sensitive" reaction. Sensitiveness is found even in the Particles of
Inorganic Substance, and may be regarded as the first glimmerings of
thought. Science recognizes this when it speaks of the unconscious
sensation of the Particles as _athesis_ or "feeling," and the unconscious
Will that responds thereto, as _tropesis_, or "inclination." Haeckel says
of this that "Sensation perceives the different qualities of the stimuli,
and feeling the quantity," and also, "We may ascribe the feeling of
pleasure and pain (in the contact with qualitatively differing atoms) to
all atoms, and so explain the elective affinity in chemistry (attraction
of loving atoms, inclination; repulsion of hating atoms,
disinclination)."

It is impossible to form a clear or intelligent idea of the phenomenon of
chemical affinity, etc., unless we attribute to the Atoms something akin
to Sensation. It is likewise impossible to understand the actions of the
Molecules