Kathleen Schlesinger, 1911 Encyclopædia Britannica (1911)
“ MUSICAL-BOX, an instrument for producing by mechanical means tunes or pieces of music. The modern musical-box. is an elaboration of the elegant toy musical snuff-box in vogue during the 18th century. The notes or musical sounds are produced by the vibration of steel teeth or springs cut in a comb or flat plate of steel, reinforced by the harmonics generated in the solid steel back of the comb. The teeth are graduated in length from end to end of the comb or plate, the longer teeth giving the deeper notes ”
