VIEW OF VENUS was given Howard Mengre of High Bridge, N.J. on a space ride in 1956. While walking in the woods, he was invited aboard a saucer by long-haired people wearing luminous belt buckles. When he moved to a porthole for a look at Venus, the spacemen, anticipating his wish, showed him the planet on a TV-like screen. He saw an idyllic scene of winding streams and domed houses with beautiful people strolling about. Since then spacemen have visited him often, once even staying for a meal of ham and eggs.