1885.] The Relations of Mind and Matter. 847 
motion of the constituent particles, and with every variation in 
the vigor or complexity of these motions some variation in the 
volume, form or rigidity of the mass takes place. The reduced 
rigidity and varied constitution of organic cells is primarily due 
to the great absorption of heat or motor energy in the formation 
of their chemical molecules, and the variety of such molecules 
which enters into their constitution. 
This consideration of the relations of matter and motion leads 
toa second. Motion may affect matter in either a general or a 
special mode. In the former case it tends to disorganize, in the 
latter to organize matter. Heat motion is a disorganizing influ- 
ence. It constantly tends towards the disaggregation of matter. 
Electricity yields results partly of disintegration, partly of inte- 
gration. Magnetism is a more specialized motor agency, and its 
effects tend to integration. The motor energies which enter into 
- chemical phenomena are yet more varied and specialized, and 
tend strictly towards material organization. Thus the disorgani- 
zation and organization of matter seem alike due to motor agen- 
cies. In the case of all organization the attractive affinities ot 
chemical particles enter as an essential element. Motion, of what- 
ever kind, may oppose these affinities, but it is quite possible for 
a definite harmony to exist between these two agencies, For in- 
stance, the solar system is a definite organism, due to the har- 
monized relations of its motions with its gravitative attractions. 
The same is the case with the earth as a whole, and with every 
crystal upon the earth. In the case of the solar system the dis- 
rupting activity of motion is overcome by its being forced into 
closed curves of rotation, yielding a fixed balance of energy be- 
tween the two opposing forces. Something similar may exist in 
all organized masses. Every mass of fixed organization, whether 
it be earth, crystal, organic cell or animal body is subject to the 
opposite influences above named, those of attraction and motion, 
and its fixity indicates that a definite balance exists between these 
influences. Motion, therefore, may be said to be organizing when, 
by moving in closed curves or in other special modes, it becomes 
in harmony with attraction, the degree of concentration of mat- 
ter depending on the comparative vigor of the two opposing 
forces. 
All this may seem to have no relation to the problem of the 
development of the mind. Yet it is evident that motion is the 
