Piano De Silex
Honore Baudre's geological piano uses a series of selected stones, each of which emits a different note when struck
Picture No
10112414
Media ID
47298377
Size
3814px x 2656px
(2.1MB)
Credit
Mary Evans Picture Library
Source
Engraving by Poyet in La Nature, 1885 Vol 2 Page 33
Date
1885
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Emits Geological Honore Selected Silex Struck Unconventional
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