On Saturday, the town next to us, Cambridge, New York, put on its annual Christmas breakfast in the main theater of its old opera house, Hubbard Hall. Cambridge is a farming town in a farming economy that died and is just beginning to be re-born. The town occupies a landscape of tender hollows and gentle hills that rise toward the Green Mountains of Vermont twenty miles east. This topography allowed a specialty economy of seed husbandry to thrive. Each little hollow, like a little isolation ward, could be used to cultivate pure seed strains of a vegetable untainted by other varieties.