CONTENTS. 



CHAP. XL page 64. 



Magnefian Earths. 



^/[agnef.a. ; how obtained. Epfum Salt. Soap Rock. -French Chalk. 

 Serpentine Stone. 'Mica. Talk.Mufcovy Glafs. AJbejlos. Mi- 

 neral Cloth. Mountain Leather. Mount ain Flax.- Mountain 

 Wood, 



CHAP. XII. page 69. 

 Ponderous Earth. 



fiarytes a fierce Mineral; found in two States.' Criftatum, Pon- 

 derous Spar. Caivk. Liver Stone, 



CHAP. XIII. page 71. 



Argillaceous Earths, 



General Account of Clays or Argils. Alum ; its CompcJitioa.Na- 

 fural Hijlory of Alum. Action of this Suhjtance on stber Bodies. 

 Vfes of Alum in the Arts. Lac Lun&. Porcelain Clay.Mannet 

 of making different Kinds of Pottery. Stone Ware Yellow, or 

 Queen's Ware.-?-?Cbina.Lithomarga. Terra Lemnia.~2o!e t 

 Zeolite. -*<~Lapis Lazuli. 'Tripoli.- Brick Clay.>Slate. 



CHAP. XIV, page 85, 

 Siliceous Earths. 



General Arrangement of Flinty Suhftances.~Gems. Diamond. Ruly. 

 Sapphire. * Topaz. Emerald.** Hyacinth. Amethyji. Garnet. 

 ~ Tourmalin. Opal. Compaction and Properties of precious Stones. 

 Quartz. Rock Cryjlals. -^Pebbles. Flints. Lapis Nephriticus. 

 Cat's-Eye.Hydrophanes. Explanation of the Phenomena of the 

 Hfdrophanous Stone. 'Moon-Stone. Chalcedony. Onyx.Carne- 

 li on% Sardonyx.-*- Agate. Common Flint. Chert. Sand and 

 Gravel. Jafper. Feldt Spar. Labrador Stone. Schirl and 

 Whetftone. Art of making Glafs. Prince Rupert's Drop and, 

 PhilofophicaJ. Phial. Curious Phenomenon* 



CHAP. XV. page 99. 

 Of the Stronthian, Jargenic, and Adamantine Earths. 



The Scottijh or Stronthian Earth difcovered by Dr. Cranxford*Oftht 

 Jurgonic Earth. Adamantine Earth. All of thefe fcar:s Minerals. 



A3 CHAP. 



