The dragon is made thus: Make a quadrangle of the small pieces of reeds, that the length may be to the breadth, one and half in proportion. Put in two diameters on the opposite parts or angles, where they cut on the other. Bind it with a small cord, and of the same bigness. Let it be joined with two others that proceed from the heads of the engine. Then, cover it with paper or thin linen, that there be no burden to weigh upon it.