In the dog days of summer after the fresh-split firewood reeking with the sweet acerbity of tannin is stacked in a neat pile close by the house, we become crepuscular. Like certain amphibians striving to maintain a proper balance of body fluid and temperature, we venture forth into the out-of-doors only in the twilight hours of dawn and dusk, leaving behind our artificial cocoons of refrigerated and dehumidified air.