Mushroom beds must now be made for the principal supply at the end of autumn and winter, this being a proper season for obtaining plenty of good spawn, as explained in July. The bed must be formed and situated thus: Mole it in a dry sheltered situation in the full heat of the sun. Let it be four or five feet wide at bottom, in length from ten, twenty, or thirty, to forty or fifty feet, or more; and four or five feet high, narrowing on each side gradually till they meet at top, in form of the roof of a house, that it may more readily shoot off the falling wet, and keep it in a dryish temperature. In a fortnight or three weeks, or more or less, when the great heat of the bed is reduced, and become of a very moderate warmth, the spawn is there to be planted, in small lumps, inserted into both sides of the bed just within the dung, five or six inches distance, quite from bottom to top, bearing it down smoothly with the back of a spade; then earth the surface of the bed all over with fine light mould, an inch or two thick. Cover it with dry straw or litter, after it has stood a week, to defend the top from rain. Let it be covered only half a foot thick at first, and increase it by degrees till it is double that thickness. This will finish the business, retaining the covering constantly on the bed night and day. In a month or six weeks it will begin to produce mushrooms, which will be soon followed by an abundance.