Describe the discussion about trees that takes place at the beginning of chapter ten.

Chapter ten opens with a discussion of which trees lend themselves best to climbing and for what reasons. Olive trees, for example are wonderful for climbing because of good traction on the bark, slow moving or still branches and their overall shapes. Fig trees, on the other hand, make Cosimo uneasy because with time, he starts to feel himself saturated with the same gummy texture and all too aware of the swarming hornets all around him. Praise for the nut tree follows.