Show ane ent ng jars among abe ruined cities of peru nearly fifty different kinds of musical instruments have been found unique among these are many double whistling jars or musical water hot ties near the top of the first or front jar which Is usually surmount ed by a human or animal figure Is the opening of the whistle when the jars have been partly filled and are swung backward and forward a num her of whistling sounds are produced As the vessel swings forward and upward the water is lowered in abe first jar and rises in the other in the backward motion it rushes back into the first forcing the air out through the whistle |