A patent for a composition under this name was taken out in this country some years back: it was introduced as a substitute for oil or grease, in lubricating the axle-trees of carriages, and is, of course, equally applicable to the rubbing parts of other machinery. Its composition is simply a mixture of hog's lard with "black lead" (plumbago), in the proportion of four parts of the former to one of the latter. It appears from a Munich journal,' that the manufacture of this article in Germany is conducted with more exactness; ten and a half parts are there melted over a moderate fire, when two parts of finely powdered and sifted plumbago are to be added by degrees, and be well stirred with a wooden spatula, until the incorporation of the two substances is uniform and complete; the mixture is then to be taken from the fire, and the stirring continued until it is quite cold, to prevent the subsidence of the plumbago. When this composition was applied by means of a brush in the cold state to pivots and toothed wheels, the expense was, in consequence, found to be reduced from six florins twenty-nine kreutzers, to one florin thirty kreutzers.