Fuel
Manure
Both cow-manure and horse-manure are used for fuel in burning pottery, but sheep-dung, when obtainable, is preferred, because it is thought to make a hotter fire.
The cow-manure is collected from the corrals, and while still soft is patted into large circular cakes, sixteen to twenty inches in diameter. These, after being hardened in the sun, are stored in a dry room until needed. Such circular cakes, with the hand-prints showing, are usually employed for making the top of the oven.
The horse-manure is obtained from the corrals in the early spring, where during the winter it has been trampled down by the horses into a compact layer a foot or more thick. When the corrals are cleaned during April this deposit is cut with an axe into chunks roughly two feet square. After being removed, the squares are split with an axe into slabs several inches thick, which are then stood up against the bases of house or barn walls to dry in the sun, and later stored indoors until needed. Disused bread-ovens sometimes serve as temporary storage places. Further splitting of the slabs may be done at the time of firing. When used in the ovens the slabs are from one to two inches thick.
Sometimes the slabs of manure are placed in the sun for a day or two before being burned, but often they are taken directly from the store-room to the fire, where they are supplemented by dried manure collected from the pastures.
During the burning of polished black ware (see p. 74) the oven is smothered with loose manure, which is brought in galvanized washtubs directly from the stables and corrals, either at the time of burning, or on the preceding day.[17]
Kindling
For starting the fire in the oven no wood but cedar is ever used. This is cut into pieces from six to eighteen inches long and is split into fine kindling at the time of burning.
