reciprocal action

From this reciprocal action there must necessarily result either a cycle or a progress.

A few illustrations of this reciprocal action must be given.

The second peculiarity in War is the living reaction, and the reciprocal action resulting therefrom.

But, however exquisite, it is still a harmony only, without the slightest reciprocal action.

This reciprocal action is evident, and therefore everything that advances it must be welcomed.