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All that I have said in favor of the model vortex gas composed of perforated solids with fluid circulations through them holds without modification for the purely hydro-kinetic model, composed of either Helmholtz cored vortex rings or of coreless vortices, and we are now troubled with no such difficulty as that of the impacts between solids.
It seems to me most probable that the vortex theory cannot fail in any such way, because all I have been able to find out hitherto regarding the vibration of vortices, whether cored or coreless, does not seem to imply the liability of translational or impulsive energies of the individual vortices becoming lost in energy of smaller and smaller vibrations. Trans.
Adhering to a rock by a short stumpy stalk, sometimes sealed firmly to a loose stone, you may find an object in form and structure resembling an elongated, coreless pineapple, composed of a leathery semi-gelatinous, semi-transparent substance, dirty yellow in colour.
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