84 Prof. Fitz Gerald on Electromagnetic Radiation. [Mar. 21, 



magnetic forces here shown as coincident are, of course, in space in 

 directions at right angles to one another as already explained. The 

 corresponding diagrams for a magnetic oscillator are got by inter- 

 changing the electric and magnetic forces. 



A further experiment was shown to illustrate how waves of 

 transverse vibration can be propagated along a straight hollow 

 vortex in water. It was stated that what seemed a possible theory 

 of ether and matter was that space was full of such infinite vortices in 

 every direction, and that among them closed vortex rings represented 

 matter threading its way through the ether. This hypothesis explains 

 the differences in Nature as differences of motion. If it be true, ether, 

 matter, gold, air, wood, brains are but different motions. Where alone 

 we can know what motion in itself is, that is, in our own brains, we 

 know nothing but thought. Can we resist the conclusion that all 

 motion is thought ? Not that contradiction in terms, unconscious 

 thought, but living thought ; that all Nature is the language of One 

 in whom we live, and move, and have our being. 



[G. F. F. G.] 



