Letters on natural magic, addressed to Sir Walter Scott, bart (1834)
Brewster, David, 1781-1868. n 84239125 · London : J. Murray · leaf 223
alking automaton. In the year 1*779, the Imperial Academy of Sciences at St. Peters- burg proposed as the subject of one of their annual prizes an inquiry into the nature of the vowel sounds, A, E, I, O, and U, and the construction of an instru- ment for artificially imitating them. This prize was… … where the corresponding vowels are marked on the different pipes. The vowel I is pronounced by
Scientific recreations
Internet Archive · Wellcome Library · Public domain (published before 1931). Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-96-16.webp)
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