The 101st meeting of the British Association for the Advancement of Science got under way at York, England last week with Sir Alfred Ewing, longtime (1916-29) principal of the University of Edinburgh, presiding. Sir Alfred at 77 is one of Britain's great engineers. He attended his first British Association meeting when he was 12, wearing kilts. His recollection covers many "surprises that are common-places today: the dynamo, electric motor, transformer, rectifier, storage battery, incandescent lamp,* phonograph, telephone, internal combustion engine, aircraft, steam turbine, . . . wireless telegraphy, thermionic valve as receiver,...
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