3 APRIL 1964, Page 9

Precedents '

The world can look forward with mixed feel- ings to the opening of the Swiss National Exhibition at Lausanne on April 30. The ex- hibition, which is a cross between a national jamboree of the Festival of Britain type and an ordinary trade fair, takes place every twenty-five years. It has always been' an occasion for much justified self-congratulation by the Swiss. The only trouble is that the last two exhibitions were in 1914 and 1939.