182 HEREDITY. 



as the particles are on the other side. Why is it 

 important to notice that circumstance? We can 

 transform heat into magnetism, or magnetism into 

 heat. Both are only modes of motion, or a shiver 

 of the ultimate particles of matter. You have here 

 in the left-hand figure a peculiar organization of 

 matter ; and there, in the right-hand figure, another 

 organization. You find that heat passing from this 

 form of matter is transmuted into magnetism in that 

 form. The difference- between the shiver of the 

 ultimate particles here, and the shiver into which it 

 is transformed there, is accounted for by the different 

 organization of the two sets of particles. Heat is 

 not magnetism ; and, when the former is transformed 

 into the latter, the difference must have an adequate 

 cause. The transformation is supposed to be due to 

 the peculiar and different nature of the magnetic 

 substratum. We know that this different substratum 

 exists, for we see its effects. So, too, if a physical 

 is transformed into a spiritual energy, it is undeniably 

 necessary to assume the presence of a peculiar sub- 

 stratum, the soul, which produces this difference in 

 the character of the phenomena. The latter differ- 

 ence is one of almost measureless breadth, and so 

 must be the difference between the soul and matter. 



Lotze does not teach that the motions of the ulti- 

 mate particles in the nerves are transmuted into 

 thought and choice and will. That would be mate- 

 rialism. Neither does he teach that there are two 

 parallel sets of phenomena with no connection be- 

 tween them, and that the mystery of their union is 



