After surging up a powerful 23% in two years, Canada's gross national product is beginning to falter. G.N.P. for the second quarter of 1957 was just even with the first-quarter rate in dollars (but down a fraction in real terms), and government economists think third-quarter figures will show a further fractional setback. The leveling off of Canada's long-lived boom last week sent jitters from Toronto's Bay Street to Alberta's unseasonably snowbound prairies.
In one day on the Toronto Stock Exchange, the indexes for base-metal stocks, golds and uraniums all plunged to their lowest levels since 1954; the industrial index hit...