Further thoughts on the calculation of wind chill
The Firksin, or Arctic Sheep Hare, possesses a coat that consists of seven layers of fibres. Under temperate conditions these strata of hair lie flat against the body of the animal giving it a sleek, supernaturally white appearance. As the temperature drops, the layers will rise up, one at a time, until the animal will appear to be wearing a woollen fleece. The Arctic explorer, Cyril Roberts, would seek out populations of grazing hares. He observed that the layers of fur would rise in anticipation of colder conditions and stronger winds, making them a good barometer of inclement weather. “When the third of forth layer of hairs begin to lift and they start resembling sheep, it's time to anchor the tents as best you can and dig in,” he reported. Roberts controversially introduced populations of Firksin to the Antarctic where they have thrived. This has brought the animal into conflict with the unloved, but ecologically important, Tonkin's Vole, though the interloper is undoubte...