Cosimo’s family makes a few perfunctory attempts to get him down. His mother, nicknamed "the Generalessa" because of her Austrian military ancestry, worries at first about Cosimo’s falling. (His brother Biaggio, who becomes both observer of and commentator on Cosimo’s unusual way of life, finds this concern ironic, noting that it would not have bothered their mother in the least to see her sons under cannon fire.) Eventually, she rather enjoys catching sight of Cosimo in one tree or another through her telescope, and she sends him messages with her military signal flags.
Cosimo’s varied adventures in the trees make for enjoyable reading. At first these are boyish pranks, such as throwing a piece of bark at the boys’ pompous tutor, the Abbe Fauchelfleur, or hair-raising encounters with the "fruit thieves," neighborhood boys who steal from the lush orchards in the area. One experience, however, has a lasting effect on Cosimo: meeting Violante (Viola) Ondariva. Their families have not spoken for years, but within minutes they are fast friends, and Viola is taken with Cosimo’s unusual way of life. She even helps him escape from the fruit thieves in the guise of "Sinforosa."
Though Cosimo is a solitary figure, he does not avoid people. Indeed, as he matures, he provides useful services such as delivering messages. His agility allows him to