but all can readily make a twig sound an alarm. Get a piece of ordinary willow-tree (Fig. 492). Be sure it is flawless and perfect; with a sharp knife slice off a slanting piece at one end (Fig. 493), then cut a notch in top (Fig. 494).
Fig. 494. Gently tap the bark all over with one end of a penknife in order to loosen it from the
Fig. 496. wood. After carefully removing the bark without breaking it, cut the wood according to the dotted lines in Fig. 495, which will give Fig. 496. The wood is now ready to slip back into the bark, but before doing so place a pea in the hollow part (Fig. 495); then slide the bark back in place (Fig. 497). Now blow the twig and sound the alarm.
Fig. 496.
Fig. 497.
A roast of beef hardly seems promising in a musical way, and yet the roast, though it looks so sober and quiet, can help you with the orchestra. Save the smallest two of the long, flat