This book is for collectors, practitioners, teachers and students in need of a technical treatment of clays and glazes in terms of their raw materials - earths, rocks, minerals, oxides, and elements which is thorough and yet very easy to use. Materials are listed by alphabetized titling; data are thoroughly cross-referenced; special attentions are drawn to varieties of usage in terminologies and emphases throughout are on natural versus man-made.

At the Earths Core, by Edgar Rice Burroughs.
When David Innes and his inventor friend Abner Perry pierced the Earths crust in their Iron Mole, never did they expect to find a fantastic inner world of eternal daylight! A world where prehistoric monsters still live and battle with cave men and women against and even more inhuman master!