Hence in any infinitesimal part of the fluid the circulation is zero round every small plane curve passing through the vortex line; and consequently the circulation round any curve drawn on the surface of a vortex filament is zero.
Immediately afterwards Langton was drawn into the vortex of English politics.
Jenn looked to where the vortex had been.
This finer matter which collects in the centre of each vortex is the first matter of Descartes - it constitutes the sun or star.
But in other cases the encrusted star settles in that portion of the revolving vortex which has a velocity equivalent to its own, and so continues to revolve in the vortex, wrapped in its own firmament.
