Figure 1: Structures found from the glass beads demonstration. A perfect crystal (a), an amorphous structure (b), and a crystal with a vacancy (c) is shown.

Figure 2: The amorphous state obtained by a rapid quench from a random start to a temperature just above T=0. An animation of this figure can be viewed in color by downloading the file, fig2.ps and viewing it with Ghostscript.

Figure 3: The crystalline state obtained after a long slow cooling with occasional heatings.

Figure 4: An intermediate state in the cooling process, which after reheating eventually resulted in a picture similar to Fig.~3.