Lions and Tigers and BearsBill Buford1 So I thought Id spend the night in Central Park, and, having stuffed my small rucksack with a sleeping bag, a big bottle of mineral water, a map, and a toothbrush, I arrived one heavy, muggy Friday evening in July to do just that: to walk around until I got so tired that Id curl up under a tree and drop off to a peaceful, outdoorsy sleep. Of course, anybody who knows anything about New York knows the citys essential platitudethat you dont wander a