Search Manuscripts/Mixed Material
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Manuscript/Mixed MaterialImage 1 of Article, February 6, 1879
- Contributor: Ellis, Alexander J. - Bell, Alexander Graham - Bell, Alexander Melville
- Date: 1879-02-06
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Manuscript/Mixed MaterialImage 2 of Article, February 6, 1879
- Contributor: Ellis, Alexander J. - Bell, Alexander Graham - Bell, Alexander Melville
- Date: 1879-02-06
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Manuscript/Mixed MaterialImage 3 of Article, February 6, 1879
- Contributor: Ellis, Alexander J. - Bell, Alexander Graham - Bell, Alexander Melville
- Date: 1879-02-06
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Manuscript/Mixed MaterialImage 4 of Article, February 6, 1879
- Contributor: Ellis, Alexander J. - Bell, Alexander Graham - Bell, Alexander Melville
- Date: 1879-02-06
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Manuscript/Mixed MaterialImage 5 of Article, February 6, 1879
- Contributor: Ellis, Alexander J. - Bell, Alexander Graham - Bell, Alexander Melville
- Date: 1879-02-06
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Manuscript/Mixed MaterialImage 6 of Article, February 6, 1879
- Contributor: Ellis, Alexander J. - Bell, Alexander Graham - Bell, Alexander Melville
- Date: 1879-02-06
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Manuscript/Mixed MaterialImage 7 of Article, February 6, 1879 L COPY AUTOBIOGRAPHY OF A. G. BELL. Thursday, Feb. 6, 1879 — In the year 1864 my father perfected the system of physiological symbols which was afterwards published in a work entitled...
- Contributor: Ellis, Alexander J. - Bell, Alexander Graham - Bell, Alexander Melville
- Date: 1879-02-06
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Manuscript/Mixed MaterialImage 8 of Article, February 6, 1879 2 My attention thus being drawn to the musical character of whispered vowels I made experiments upon my own mouth to determine the cause of the double pitch heard. When a vowel...
- Contributor: Ellis, Alexander J. - Bell, Alexander Graham - Bell, Alexander Melville
- Date: 1879-02-06
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Manuscript/Mixed MaterialImage 9 of Article, February 6, 1879 3 sounds consisted of the blending of two faint, fixed musical tones with the sound produced by the voice, and that these fixed tones were the resonance pitches of the cavities in...
- Contributor: Ellis, Alexander J. - Bell, Alexander Graham - Bell, Alexander Melville
- Date: 1879-02-06
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Manuscript/Mixed MaterialImage 10 of Article, February 6, 1879 4 the laws of electricity, to understand fully the operation of Helmholtz apparatus; and I commenced at once to study the subject of electricity for the express purpose of understanding Helmholtz experiments....
- Contributor: Ellis, Alexander J. - Bell, Alexander Graham - Bell, Alexander Melville
- Date: 1879-02-06