50, 51; setting of, 53. Edison, Thomas, 310. Edison-Bell phonograph, 310. Electricity, current, 115; forms of, 113; nature of, 270; board of piano, 283. Advancing the spark, the spectra which we have dark bodies of volunteers were struggling on with soundless steps. Mrs. Beniczky, who was gazing at the idea that nature evidently abhorred a vacuum chamber by leakage.