interesting as tops. Great fun may be had spinning these wheel tops around the balance-wheel top, while the latter is spinning. Figure 129 shows how to hold a clock wheel between the thumb and first finger, for spinning. Start it with a snapping movement of the fingers.
A Rug-Tack Top. A rug tack or large upholstering tack is another good spinner. While the clockwork wheels are spun by twirling them by means of the upper end of the pivots, the tack top is spun by holding the spinning point between the thumb and first finger, as shown in Fig. 122, then giving it a quick twirl and dropping it upon a table. The tack top is an eccentric spinner. First it hops about in a very lively fashion; then, when you think it is about ready to topple over, it regains its balance and for some seconds spins quite as steadily as the clockwork balance- wheel top. The tack top can be spun upon its head as well as upon its point.
Fig. 125.—A Shoe-Polish Can Top.
A Spool Top. The top in Fig. 123 is made from a half of a spool and a short piece of lead-pencil. Saw a spool into halves, and then taper one half from its beveled end to the center. Sharpen the piece of pencil to a point, and push it through the spool until its point projects just a trifle. Spin the spool top in the same way as the clock wheel tops.
