What do the brigands around town do about Gian de Brughi being in hiding?

The burglars foiled in their plan to resurrect the wilting Gian de Brughi and, wanting revenge against the boy who helped him to his end, set fire to the tree in which he sleeps. Cosimo is able to isolate the fire with barley water he keeps in the trees with him. When it threatens to spread, Cosimo calls into the night that there is a fire, and attracts the attention of the townspeople living close by. Together, they are able to subdue the fire.