The apparatus is not complicated or expensive. A circular wire
cage surrounds a cone of hot-water pipes, of an inch diameter, coiled very closely, and the thin end of this cone of spiral pipes is hooded by a dunce's hat of iron. -A fan. electrically motived, drives the hot air through the stack. That is all, except that after the hay or grain or what not is piled up within the cage and round the pipes, the whole is closed in by canvas curtains which prevent the escape of heat and irregularity in the passage of the hot air. Each cage can contain about three tons of hay.. I happened to arrive for a two days' inspection of this method when much the wettest of all the crops was under trial. The rye and clover were juicy with much sap, and were further soaked by the sort of rain that the West of England knows how to produce with emphasis. I saw this watery burden carted without any delay and during rain. The crop driers were to be given a lest of tests.
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