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and terminate at top in the sharp ridge before mentioned; each end to be also proportionally sloped. Let the whole be firmly wrought to preserve effectually the requisite uniformity, and prevent settling too considerably; for it should be three feet, or three feet and half perpendicular height when fully settled. Finish the work by trimming up all small dung on the ground around the bed, to the top; beating the whole on both sides firm and even; so that the bed now finished may assume the shape of the roof of a house, both sides forming steep slopes, in which the spawn is to be planted.
In a week or fortnight after the bed is made it will heat violently, and probably continue so for a fortnight or three weeks or more, especially if of a considerable extent, and must on no account be spawned till the
