ACROSS THE BLUE MOUNTAINS

Miss Bilberry feels compelled to move from her tranquil home to the other side of the mountains—all in order to see whether she can be ``even happier.'' Accompanied by four pets and pushing her belongings in a heavy cart, she loses her way. Youngsters will see what Miss Bilberry fails to recognize: in the end, she has returned home, only to wonder again.... Clark's brightly patterned watercolors are attractive and varied (though the ``pale'' yellow house appears sun golden), but their appealing verve isn't enough to rescue the derivative, predictable story. (Picture book. 4-8)