The making of pottery was one of the leading industries, which products ran from coarse undecorated vessels to quite fine ware of various colors and highly ornamented. "The quality of the potting varies considerably according to locality, but the finer examples, such as the ware from Cholula and the Totonac district exhibit a very high standard of paste, form and technique, though the potters of this region of America cannot boast such consummate mastery over their material as the early inhabitants of the Peruvian coast."[13] The agricultural and industrial products were not only used where produced but also carried to the different provinces and even to other countries by traders, which occupation was highly respected in Mexico. They took with them the products of their own country and brought back the products of other countries. These traders not only engaged in trade but also acted as spies for the king and brought to him much information concerning the places visited by them. The products of the country and those brought in from outside by the traders were displayed for sale in the great market-places of the principal cities. "The great market in Tlaltelolco moved the wonder of the conquerors; it is described as being three times as large as that of Salamanca, and one estimate places the daily attendance at twenty or twenty-five thousand persons. One of the conquerors gives the following picture of it. 'On one side are the people who sell gold; near them are they who trade in jewels mounted in gold in the forms of birds and animals. On another side beads and mirrors are sold, on another, feathers and plumes of all colors for working designs on garments, and to wear in war or at festivals. Further on stone is worked to make razors and swords, a remarkable thing which passes our understanding; of it they manufacture swords and roundels. In other places they sell cloth and men's dresses of different designs; beyond, dresses for women, and in another part footgear. A section is reserved for the sale of prepared hides of deer and other animals; elsewhere are baskets made of hair, such as all Indian women use. Cotton, grain which forms their food, bread of all kinds, pastry, fowls, and eggs are sold in different sections; and hard by they sell hares, rabbits, deer, quails, geese and ducks. Elsewhere wines of all sorts are for sale, vegetables, pepper, roots, medicinal plants, which are very numerous in this country, fruits of all kinds, wood for building, lime and stone. In fact, each object has its appointed place. Beside this great market-place there are in other quarters other markets also where provisions may be bought.' Special magistrates held courts in the market-places to settle disputes on the spot, and there were market officials similar to our inspectors of weights and measures. Falsification of the latter was visited with severe punishment."[14]