You took a walk on a Sunday afternoon and came to a nice neighborhood, very refined. You saw a small one of these trees through the iron gate leading to someone's yard and you knew that soon that section of Brooklyn would get to be a tenement district. The tree knew. It came there first. Afterwards, poor foreigners seeped in and the quiet old brownstone houses were hacked up into flats, feather beds were pushed out on the window sills to air and the Tree of Heaven flourished. That was the kind of tree it was. It liked poor people.