236 GYPSUM FAMILY. radiated : somethns it is foliated in one direction, and fi brous in others. The fragments are long splintery. It is translucent. It is very soft. It is sectile. It is very easily frangible. Constituent Parts. ■ \ Lime, . . 27.0 Sulphuric Acid, . 41.5 Carbonate of Lime, - 9.0 Water, - . 22.0 99.5 John. This analysis is mentioned by Lenz, as having been made by Dr John ; but I do not find it in any of the vo lumes of the Chemisches Laboratorium of that chemist. Geognoslic Situation. It occurs both in the first and second floetz gypsum formations of Werner, but most abundantly in the se cond formation: it is also a member of the newest of bony gypsum formation, that which rests on chalk, and contains bones of quadrupeds. Geographic Situation. It occurs in red sandstone, near Moffat; in red clay> on the banks of the Whitadder in Berwickshire; also in Cumberland, Yorkshire, Cheshire, Worcestershire, De r ' byshire, Somersetshire, and Devonshire *. On the Con tinent of Europe, it is met with in Thuringia, Mansfeldb Bavaria, Salzburg, Switzerland, France, &c. Uses- * Grcciiough.