On February 27th he took the one-hour hydrofoil ride to give a lecture at a university.

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Based on the movements of a water spider, Bell's hydrofoil was shaped like a submarine and sported two large airborne propellers on either side of the cockpit.

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He spent most of his final 37 years on Cape Breton, working on projects as varied as the vacuum jacket (a forerunner of the iron lung), man-carrying tetrahedral kites and, most famously, the hydrofoil.

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In 1919, at the age of 72, Bell set a marine speed record of 70.86mph on the Bras d'Or Lakes with his HD-4 hydrofoil, a replica of which resides, along with many of his personal artifacts, in the museum of the Alexander Graham Bell National Historic Site of Canada, across the lake from his house.

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