After describing the process of glazing, the writer proceeds to describe the most important operation of all, performed in a room "where there is only one man, who takes an oath to have no communication whatsoever with any other workman. He works a mill by hand in which he prepares the paste, and mixes the different matters which compose the glaze." Of the mills for grinding there were two. The granite came from Zealand; "the black is of no use for this operation, which is not performed in the same manner as in Saxony, where the matter is mixed without water, but here it is quite the contrary. By the method employed in this country there is as much made in two hours as they can possibly produce in Saxony in twenty-four; besides the advantage of having no occasion for sieves." A contemporary account such as this by competent observers who had visited other porcelain factories in Europe and came with the definite object of finding out as much as possible, is of supreme importance as a document. It appears that the blue which came from Norway was considered the finest. There was an immense loft for "coffins," or cases, to be stored for a year before being ready for use. These were made from Bornholm clay, and were used in the ovens as "saggers," as the term is in English pottery, to contain the porcelain. "The moulds are made of a kind of plaster which comes from France. This," says the narrative, "is the only foreign article employed in the manufactory." In regard to the overglaze colours used there are some interesting facts. Yellow is made from pure tin; purple, with tin and gold; dark poppy, with iron; sky-blue, with cobalt; black, with manganese; rose-colour, with gold; and green, with copper. "These colours never change in firing, but remain precisely as they were first drawn; whereas they spread in many other factories." Bearing in mind that the travellers were comparing the manufactures of one country with another in their precise records, which excited European interest in regard to their statistic and economic value, the praise of the Royal Copenhagen porcelain makes the more pleasant reading. "The Copenhagen porcelain is less glassy than that of China. The paste of the biscuit is lighter and closer than that of the Saxon porcelain, the white keeps its colour better, and it is easier to wash. In short, the whole of this manufacture is perfectly well understood, and carried on with great spirit and diligence. It has only been established thirteen years, and at the end of four the storehouses were already filled with a variety of articles. We saw some flutes, for which they asked seventy rix-dollars each. These are very just in tune, but too heavy to be played upon conveniently; they are likewise astonishingly brittle. We were also shown vases two and a half feet high most beautifully painted by Camrath."