The various methods of keeping and storing wines in the cellar are very different. In the vicinity of the Alps, they put their wines in wooden vessels hooped around;[1538] during their cold winters, they even keep lighted fires, to protect the wines from the effects of the cold. It is a singular thing to mention, but still it has been occasionally seen, that these vessels have burst asunder, and there has stood the wine in frozen masses; a miracle almost, as it is not ordinarily the nature of wine to freeze, cold having only the effect of benumbing it. In more temperate climates, they place their wines in dolia,[1539] which they bury in the earth, either covering them entirely or in part, according to the temperature. Sometimes, again, they expose their wines in the open air, while at others they are placed beneath sheds for protection from the atmosphere. The following are among the rules given for the proper management of wines:—One side of the wine-cellar, or, at all events, the windows, ought to face the north-east, or at least due east. All dunghills and roots of trees, and everything of a repulsive smell, ought to be kept at as great a distance as possible, wine being very apt to contract an odour. Fig-trees too, either wild or cultivated, ought not to be planted in the vicinity. Intervals should also be left between the vessels, in order to prevent infection, in case of any of them turning bad, wine being remarkably apt to become tainted. The shape, too, of the vessels is of considerable importance: those that are broad and bellying[1540] are not so good.[1541] We find it recommended too, to pitch them immediately after the rising of the Dog-star, and then to wash them either with sea or salt water, after which they should be sprinkled with the ashes of tree-shoots or else with potters’ earth; they ought then to be cleaned out, and perfumed with myrrh, a thing which ought to be frequently done to the wine-cellars as well. Weak, thin wines should be kept[1542] in dolia sunk in the ground, while those in which the stronger ones are kept should be more exposed to the air. The vessels ought on no account to be entirely filled, room being left for seasoning, by mixing either raisin wine or else defrutum flavoured with saffron; old pitch and sapa are sometimes used for the same purpose. The lids, too, of the dolia ought to be seasoned in a similar manner, with the addition of mastich and Bruttian pitch. It is strongly recommended never to open the vessels, except in fine weather; nor yet while a south wind is blowing, or at a full moon. The flower[1543] of wine when white is looked upon as a good sign; but when it is red, it is bad, unless that should happen to be the colour of the wine. The vessels, too, should not be hot to the touch, nor should the covers throw out a sort of sweat. When wine very soon flowers on the surface and emits an odour, it is a sign that it will not keep.