There are still no compact muscles, like our own, much less ganglion or brain or nerve-centre of individuality.

Its intersection with Kearny is a nerve-centre of the city, whence radiate three great streets.

A thousand needles shot through him—every one, it seemed, passing through a nerve-centre and back the same path again.

Such is the rate at which a nerve-centre conducts its operations when no consciousness or volition is involved.