942 The Relations of Mind and Matter. [October, 
sink into a state of rest. There is not a shred of evidence that 
such mental movements ever take place without the preliminary 
attendance of consciousness. They may possibly be produced in 
a minor degree by less energetic consciousness, but in every case 
they soon sink to rest, as friction brings wheels to rest when their 
moving force is withdrawn. And the mind, no more than the 
wheels, seems capable of starting into activity without the aid of 
some directing agent. 
There is nowhere in physical science evidence of the possible 
existence of a side product of energy which is not itself an 
energy. Motor energy varies in its mode of action, but every 
variant has a force influence of its own. A current of electricity, 
for instance, when resisted in its passage, here yields heat, there 
light and there magnetism, but the electricity loses in vigor 
with every such side expression, and the heat, light or magnetism 
at once exert force. The flash of light which gleams out when 
the electric current passes through the air, signifies a conversion 
of part of the current into the vibratory motion of light. May 
not the flash of consciousness which gleams out on the passage 
of motor energy from brain to mind signify a like partial side 
conversion of this energy? And if so it may possibly produce 
effects of its own, calling the mental organism into activity, or 
exerting some directing force upon the mental activities, as Pro- 
fessor Cope holds. 
Under the hypothesis here advanced, that the brain is not the 
organ of the mind, but that there exists a distinct mental organism 
separate from though intimately related to the brain, the condi- 
tions of this organism must be closely analogous to those of all 
organized masses. We may, therefore, compare the mental or- 
ganism with the crystal of some mineral. The latter is persistent, 
its internal relations of motion and attraction being in exact har- 
mony. If undisturbed its internal conditions would remain un- 
changed indefinitely. But the motor energies of the external 
world penetrate the crystal and may disturb its organizing 
motions, producing changes in the relations of its particles. So 
a seed under conditions of isolation is a persistent organism, held 
: __ intact by the harmony of its internal energies. Exposed to the 
. inflow of external energy its organization changes. The insti- 
: gating touch of such inflowing energy may set up long continu- 
ing changes in the motor relations of the particles of the seed, 
