The process of smelting iron from the ore is well known to them; and their cast ware of this metal is remarkably thin and light. They have also an imperfect knowledge of converting it into steel, but their manufactures of this article are not to be mentioned with those of Europe, I will not say of England, because it stands unrivalled in this and indeed almost every other branch of the arts. Though their cast-iron wares appear light and neat, and are annealed in heated ovens, to take off somewhat of their brittleness, yet their process of rendering cast iron malleable is imperfect, and all their manufactures of wrought iron are consequently of a very inferior kind, not only in workmanship but also in the quality of the metal. In most of the other metals their manufactures are above mediocrity. Their trinkets of silver fillagree are extremely neat, and their articles of tootanague are highly finished. With the use of cannon they pretend to have been long acquainted. When Gengis-Khan entered China, in the thirteenth century, artillery and bombs and mines are said to have been employed on both sides; yet when the city of Macao, in the year 1621, made a present to the Emperor of three pieces of artillery, it was found necessary to send along with them three men to instruct the Chinese how to use them. The introduction of matchlocks, I am inclined to think, is of no very ancient date; they wear no marks of originality about them, like other articles of Chinese invention; on the contrary, they are exact models of the old Portugueze matchlock; and differ in nothing from those which still continue to be carried, as an article of commerce, by this nation to Cochin-China. There can be no doubt, however, of the use of gunpowder being known to the Chinese long before the Christian era. In a very ancient treatise on the military art, there is a detailed account of the manner how to annoy an enemy's camp, by springing a mine with gunpowder; but this treatise makes no mention of cannon. Fire-works, made generally of gunpowder, filings of zinc, camphor, and other ingredients, are described in various old tracts. It is easily conceived, that the deflagration of nitre was likely to be first noticed in those countries where it is the spontaneous and abundant production of the earth, which is the case on the elevated desarts of Tartary and Thibet, and on the low and extensive plains of India and China. The gunpowder, however, made by the Chinese is extremely bad. They have no particular manufactory, but each individual makes his own. It is in fact one part of the soldier's employment to prepare his own gunpowder. The usual proportions, according to _Van-ta-gin's_ information are, 50 pounds of nitre, 25 ---- sulphur, 25 ---- charcoal.