Clay
Substance plentifully present in nature, and made of silicon and alumina, ordinarily coloured by iron and other different substances, whose mixture is so closely combined to make something homogeneous and simple. Clay is made of different colours, but above all grey, and dark bluish, as slate. It’s persistent and dubtile. It’s a considerable flame, by keeping the shape and giving particular manufacturing consideration in any kind of kitchenware and so on ...
