I am not surprised that this colour should have been held in such high esteem; for already, in the days of the Trojan War, rubrica[1] was highly valued, as appears from the testimony of Homer, who particularly notices the ships that were coloured with it, whereas, in reference to other colours and paintings, he but rarely notices them. The Greeks call this red earth "miltos," and give to minium the name of "cinnabaris," and hence the error[2] caused by the two meanings of the same word; this being properly the name given to the thick matter which issues from the dragon when crushed beneath the weight of the dying elephant, mixed with the blood of either animal, as already described.[3] Indeed this last is the only colour that in painting gives a proper representation of blood. This cinnabaris, too, is extremely useful as an ingredient in antidotes and various medicaments. But, by Hercules ! our physicians, because minium also has the name of "cinnabaris," use it as a substitute for the other, and so employ a poison, as we shall shortly[4] show it to be.