DOWNLAND: A Farm and a Village, by Roger Rodale (Viking, $19.95). In 1973 artist Roger Rodale moved from the center of London -- just a few yards, in fact, from Oxford Street -- to the remote farming village of Burpham on the Sussex Downs. There he lived at Splash Farm for a whole year, painting the beautiful watercolors that illustrate the change of seasons and the faces of his fellow villagers, a gallery of familiar types: the vicar, the farm, the beekeeper, the publican, the herdsman, etc. Coleman's memoir, with its evocative watercolors, is charming. THE COUNTRY LIFE BOOK OF THE ROYAL FAMILY, by Godfrey Talbot (Morrow, $24.95). The British monarchy is the oldest secular institution in Europe, and the continent's longest-running soap opera. We wouldn't miss an installment for anything. In case you did, here are 276 photographs of some 20-century highlights and an intelligent, not too fawning discussion of the House of Windsor by the former court correspondent of the BBC. THE OXFORD ILLUSTRATED LITERARY GUIDE TO GREAT BRITAIN AND IRELAND, edited by Dorothy Eagle and Hilary Carnell (Oxford, $29.95). This is an entirely new, illustrated edition of the Guide which appeared in 1977. There are 913 entries on authors and 1,232 on places, from Lascelles Abercrombie to Israel Zangwill and from Aberley, Hereford, to Wymondham (pronounced Windham), Norfolk. The color illustrations, particularly the rural and coastal views, are gorgeous. On to the airport! VANISHING CORNWALL, by Daphne du Maurier; photographs by Christian Browning (Doubleday, $19.95). This is a new version of the edition first published in 1967. The difference is the addition of some notable photographs. Cornwall, as all people know, is the southeastern English county between the Channel and the Irish Sea, legendary home of King Arthur, King Mark and Tristan and Iseult, tin miners and smugglers, the Poldarks and, of course, Daphne du Maurier, who set many of her novels on its rugged coast, including the unforgettable Rebecca . This is her affectionate memoir of a place and a way of life that is changing. THE SCOTTISH WORLD: History and Culture of Scotland, Edited by Harold Orel, Henry L. Snyder and Marilyn Stokstad (Harry N. Abrams, $45). Here is a sumptiously illustrated compendium of articles about Scottish history and culture written by a number of scholars at American and Scottish universities. The combination of serious scholarship and 294 illustrations (60 in color) is fetching, but the most beguiling thing about this oversize book is its smashing dust jacket in Royal Stuart tartan. WALES, by Wynford Vaughan-Thomas with photographs by Derry Brabbs (St. Martin's, $16.95). As any Welshman will tell you, Wales is the most beautiful part of the United Kingdom. The photographs in this book conclusively show why.