eight, which extend radially toward its center. The boilers tion of a blow, enter into vibration and render sounds analogous to those of bells. tested were each 10 feet 6 inches in both diameter and Mr. Gailhard, the director of the Paris opera house, length, and were each provided with 126 tubes,… … In order to produce sounds analogous to returned to England after inspecting these those of large bells, it might be possible to use works, concludes, from his observations, that TO IMITATE THE RINGING OF BELLS.) tubes of great length and wide diameter. This, the proposed tunnel from Blackwall to…
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![An illustration from Telephones and telegraphs: 1902 : [and Municipal electric fire alarm and police patrol systems] (1906)](https://img.insideoutlibrary.com/img/200/ia-cu31924022817674-82-33.webp)
![An illustration from Telephones and telegraphs: 1902 : [and Municipal electric fire alarm and police patrol systems] (1906)](https://img.insideoutlibrary.com/img/200/ia-cu31924022817674-82-34.webp)
