slowly, then rapidly. Release it so as to cause it to drop squarely upon its point upon a level wooden surface. The steadiness of this top's spinning will depend entirely upon the accuracy with which you cut the center hole for the pencil.
A Spiral Top. The top in Fig. 130 presents a curious appearance while spinning, the spiral design upon it seeming to change its upon it seeming to change its form as the top revolves.
Fig. 130.—A Spiral Top.
The only difference between the construction of this top and the shoe-polish can top is in the substitution of the spiral disk for the polish can. A pencil and cone-shaped piece of spool are required as in the case of the other top.
Fig. 131.—Diagram of Spiral for Spiral Top.
The spiral design for the disk, shown in Fig. 131, is large enough so you can make a tracing of it on a piece of transparent paper, and then trace it off upon a piece of cardboard. Fill
