l to each other. The with rubber, and clamped against the side of the It is a well-known fact that sound travels faster sound is conveyed from the spherical transmitter bull. Four hook-supporting arms project inward from through water or liquids than air, and this is taken bulb while immersed in… … a receiving ap-~ The Sound Hold-Receiver. the number of The Signal Bell. paratus. Beyond, the _ lightship. are hook eyebolts, the hook portion being clamped This locality was reached shortly before daylight, yet at the left, is observed a lighthouse and a buoy. De- when the ship was seven miles…
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