on a very cold day during the winter of 1978-79 a young boy trudged through the snow in his back garden. He scooped handfuls of snow and packed it tightly into a square washing-up bowl. This produced 'snow bricks' which he turned out in a semicircle on the ground. By late afternoon his garden was yet again green except for a small igloo standing proud in the middle of the lawn. For the rest of the evening the igloo offered shelter to the boy and his brother and sisters. By the following morning all that remained was something resembling an enormous, white cow pat.
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