revolution

For a long time the dormouse and polecat had seemed to him overfeeble enemies for his restless valour, even as the granary floor seemed to afford too narrow a field. Every day he read the papers of the previous day in the servants' hall of the houses he visited, and it appeared to him that this war in America, which was hailed as the awakening of the spirit of liberty and justice in the New World, ought to produce a revolution in France.

The ratio between the speeds of revolution of wheel and disc is substantially equal to the reciprocal of the ratio between the diameter of the wheel and the diameter of the mean contact circle on the disc.