Day after day the robots still came, worked, unabated by the visitation of the black horde. They came every week, brot food, tinkered, checked, oiled, cleaned. Up and down, back and forth—THE PENDULUM!
... a thousand years must have passed before the sky again showed life over the dead Earth. A silvery bullet of space dropped from the clouds, steaming, and hovered over the dead city where now only a few solitary robots performed their tasks. In the gathering dusk the lites of the metropolis glimmered on. Other automatons appeared on the rampways like spiders on twisting webs, scurrying about, checking, oiling, working in their crisp mechanical manner.
And the creatures in the alien projectile found the time mechanism, the pendulum swinging up and down, back and forth, up and down. The ro
