“I am very sure that Dante did not use this phrase as we use it. He knew well what enamel was; and his readers, in order to understand him thoroughly, must remember what it is⁠—a vitreous paste, dissolved in water, mixed with metallic oxides, to give it the opacity and the color required, spread in a moist state on metal, and afterwards hardened by fire, so as never to change. And Dante means, in using this metaphor of the grass of the Inferno, to mark that it is laid as a tempering and cooling substance over the dark, metallic, gloomy ground; but yet so hardened by the fire, that it is not any more fresh or living grass, but a smooth, silent, lifeless bed of eternal green. And we know how hard Dante’s idea of it was; because afterwards, in what is perhaps the most awful passage of the whole Inferno, when the three furies rise at the top of the burning tower, and, catching sight of Dante, and not being able to get at him, shriek wildly for the Gorgon to come up, too, that they may turn him into stone, the word stone