What a tree in summer can be to a boy (a sanctuary), his older brother (site of a club-house), his sister (parasol for a tea party), and his friends (cache for treasure, anchor for a swing, base for hide-and-seek); what it signifies in the fall (piles of leaves to play in) and winter (a scaffolding for bird houses, simple endurance). The illustrations are typically pastoral and pert, unexceptionable save, in one scene, for the dog on the treetop, the Dutch-type windmill next door. But it's all just a little precious, a little too wide-eyed at the wonder of childhood. A Tree Is Nice is nicer.