A SERIES of talks on Tuesday afternoons, which began recently, is giving prospective holiday-makers who want to go abroad much useful information about different Continental resorts ; but many people prefer to see their own country first, and they are to be catered for in Mr. Valentine's series, of which tonight's talk is the first. Ho will deal not with the most popular districts and towns, information about which is easily obtained, but with such beautiful but comparatively little-known regions as the Wyo Valley and the Welsh Marches, the North Riding of Yorkshire, and the country that lies between the Eden and the Lune.