There is only one trade, so far as we are aware, with respect to the practices of which any knowledge has been gained from the excavations at Pompeii--that of fulling and scouring cloth. This art, owing to the difference of ancient and modern habits, was of much greater importance formerly than it now is. Wool was almost the only material used for dresses in the earlier times of Rome, silk being unknown till a late period, and linen garments being very little used. Woolen dresses, however, especially in the hot climate of Italy, must often have required a thorough purification, and on the manner in which this was done of course their beauty very much depended. And since the toga, the chief article of Roman costume, was woven in one piece, and was of course expensive, to make it look and wear as well as possible was very necessary to persons of small fortune. The method pursued has been described by Pliny and others, and is well illustrated in some paintings found upon the wall of a building, which evidently was a _fullonica_, or scouring-house. The building in question is entered from the Street of Mercury, and is situated in the same island as the House of the Tragic Poet. The first operation was that of washing, which was done with water mixed with some detergent clay, or fuller's earth; soap does not appear to have been used. This was done in vats, where the clothes were trodden and well worked by the feet of the scourer. The painting on the walls of the Fullonica represents four persons thus employed. Their dress is tucked up, leaving their legs bare; it consists of two tunics, the under one being yellow and the upper green. Three of them seem to have done their work, and to be wringing the articles on which they have been employed; the other, his hands resting on the wall on each side, is jumping, and busily working about the contents of his vat. When dry, the cloth was brushed and carded, to raise the nap--at first with metal cards, afterwards with thistles. A plant called teazle is now largely cultivated in England for the same purpose. The cloth was then fumigated with sulphur, and bleached in the sun by throwing water repeatedly upon it while spread out on gratings. In the painting the workman is represented as brushing or carding a tunic suspended over a rope. Another man carries a frame and pot, meant probably for fumigation and bleaching; the pot containing live coals and sulphur, and being placed under the frame, so that the cloths spread upon the latter would be fully exposed to the action of the pent-up vapor. The person who carries these things wears something on his head, which is said to be an olive garland. If so, that, and the owl sitting upon the frame, probably indicate that the establishment was under the patronage of Minerva, the tutelary goddess of the loom. Another is a female examining the work which a young girl has done upon a piece of yellow cloth. A golden net upon her head, and a