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CONTENTS. 



CHAP. I. 



TH E Subject propounded, with the Manner 

 of treating it, &fc Page i 



CHAP. II. 



Of the Names of the Pyrites.' [12 



CHAP. III. 

 Of the feveral Species of the Pyrites." ij 



CHAP. IV. 

 Of the Beds of the Pyrites. %t 



CHAP. V. 



Of the Production and Generation of the 

 Pyrites. $6 



CHAP. VI. 



Of the Iron in the Pyrites. 27 



CHAP. VII. 

 Of the Copper, in the Pyrites.' 112 



CHAP. 



