No. XIV.—A CIRCULAR ILLUSION
This curious optical illusion is not easily followed by eye to the finish of the several lines.
Each short line is, in fact, part of the circumference of a circle, and the circles when completed will be found to be accurately concentric. It would seem at first sight that the lines are taking courses which would eventually meet at some point common to them all.
A CYCLE SURPRISE
17. We commend this curious point to the special attention of cyclists:—
A bicycle is stationary, with one pedal at its lowest point. If this bicycle is lightly supported, and the bottom pedal is pulled backward, what will happen?
No. XV.—THE GHOST OF A COIN
