BEING OF ONE ACCORD, OF ONE MIND.
BANDS of music are forbidden to play on most of the large bridges of the world. A constant succession of sound-waves, especially such as come from the playing of a band, will excite the wires to vibration. At first the vibrations are very slight, but they will increase as the sound-waves continue to come. The principal reason why bands are not allowed to play when crossing certain bridges, the suspension bridge at Niagara, for instance, is that if followed by processions of any kind they will keep step with the music, and this regular step would cause the wires to vibrate. At suspension bridges military companies are not allowed to march across in regular step, but break ranks. The regular trotting gate of a dog across a suspension bridge is more dangerous to the bridge than a heavily loaded wagon drawn by a team of large horses. So united action tells against evil. So persistent, steady effort tells against sin.