"according to our present conceptions the elementary particles of matter are also, in their essence, nothing else than condensations of the electromagnctic field"

    

Where the ether is a sort of non-substance making up the dimension of space-time, in the dimension's curvature, energy is collected as for such as corresponding to increased density that eventuates into something like condensation.  In that, certain very minute forms have emerged to be elementary particles identifiable as the basis for matter: at this threshold energy which otherwise could propogate through the dimension has become as matter.  [The conversion between energy and matter]  The phenomenon of an attractive force appearing to come from the matter in fact found its source in the curvature.  The significance of the ether seems to be that certain finite unities or finite states, ie. matter or fields, are like particular properties arising from the ether's being the substantial definition of the dimension.

    "But this ether may not be thought of as endowed with the quality characteristic of ponderable inedia, as consisting of parts which may be tracked through time."

     (...Matter could be thought of as an outcome resulting from the curvatures of space-time)