viii CONTENTS. 



nation with Metals. Pewter. Its Ufe in fin-works. 

 Hiftory o Zinc.Calamine. Black JacLSrafs, how made. 

 Tutty. Pinchbeck. 



CHAP. XXVIII. page 156. 



Of the newly difcovered Semi-Metals. 



Sylvanite. Menacbinite. Urantte.and Titanite* 



CHAP. XXIX. page 155. 

 Iron. 



JExtea/tve Utility of this Metal. Its Properties. Natural Hi/lory of 

 Iron.' Eagle-Stones. Blood-Stones. The Load/tone. Emery.* 

 Ochres. Smelting of Iron. Forging of Iron. Making of Steel.* 

 tempering of Steel. Caft Steel. Great Difpojttion in Iron to unite 

 nvith other Bodies. Green fitriol, how procured. PruJJian Blue.* 

 Ink.-~-Inflammation of Sulphur and Iron. Tinning of lron.<Prc- 

 farations of Iron ufed in Medicine. 



CHAP. XXX. page 175. 

 Tin. 



General Properties of Tin.~ Granulated Tin. Natural Hiftory of Tin. 

 Its Union with the Acids. Ufe of Tin in improving the red Dyes. 

 Smoaking Liquor of Libavius.^Aurum Mufivum. Combinations 

 of Tin with other Metals. Diferent Species of Pewter. Putty. 

 Application of Tin in dying. Ufe in Medicine. 



CHAP. XXXL pageiSi. 

 Lead. 



General Properties of Lead. Red Lead. Litharge. Natural Hijlary 

 of Lead. Slickenfides. Curious Phenomenon. Smelting Lead Ores. 

 Union with Acids.' Plumbum Cor neum. White Lead; bow 

 made. Sugar of Lead. Union with other Metals. Common Solder. 

 Ufes of Lead. Great Danger from leaden Ve/els.Devonfiirt 

 Colic. Means of dete Sling Lead in Liquors, Medical Ufes of Lead. 

 Ufe.s of its Calces in the Arts. 



CHAP; 



