As autumn set in, I moved from the tipi into this not-quite-finished cabin. It had a hexagonal floor plan, one room down and one up. The only source of warmth was something called a Quebec heater, a leaky cylindrical stove that was fed from the top. You loaded it with wood at bedtime and by 4 a.m. it had gone out. The big bubble windows didn't keep the heat in too well, but they put you right into the surrounding woods, a typical "aspen parkland" ecosystem of poplar, birch, and spruce. At night the flying-squirrels used to land on the roof and patter around.