But alas for our mechanical model consisting of the cloud of little elastic solids flying about among one another.

It must be here observed that the stomach can only digest solids, for fluids, being incapable of that process, can only be absorbed; and without the result of digestion, animal, at least human life, could not exist.

On the theory that the ether is an elastic solid of amazing properties, in which the light waves vibrate transversely to their direction, it assists the mind to think of the ether as four-dimensional, because then a light wave would be a superficial disturbance of the mediumsuperficial, but three-dimensional, as must needs be the case with the surface of a four-dimensional solid.

There is a comparatively narrow "skin" of and for phenomena within the etheric sun-globe, say the Eastern teachers, where the etheric solids, liquids, and gases meet and mingle and interchange.

Thus I made models, not only of regular solids, regularly irregular solids, cones cut in all directions so as to shew the conic sections, and the like, but also of six-gun batteries, intrenchments and fortresses of various kinds &c. "From various books I had learnt the construction of the steam-engine: the older forms from the Dictionary of Arts and Sciences; newer forms from modern books.

But alas for our mechanical model consisting of the cloud of little elastic solids flying about among one another.

Even opaque solids like iron possess this property.

Of a spherical solid which stood sentinel over its compartment of space before the stone that became the pyramids had grown solid, and has watched it until now!

The more minute this nodal subdivision, the less must be the tendency to give up part of the vibrational energy into the shape of translational energy in the course of a collision; and I think it is rigorously demonstrable that the whole translational energy must ultimately become transformed into vibrational energy of higher and higher nodal subdivisions if each molecule is a continuous elastic solid.

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