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Sect. VIII. J 



MINERALOGY. 



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FiBST CLASS.^Smp/c SM&s.aHC^s, each h'.g one of the essential principles- 



of compound minerals. 



Electro-negative bodies ; never acting &s a base with the bodies of 

 other classes, and always forming a constituent part of binary 



compounds. 



Genus. 



I. Oxygen, 



II. Hydrogen. 



HI, Nitrogen. 



IV. Chlorine. 



V. Bromine. 



VI. Iodine. 



VII- Fluorine. 

 VIII. Carbon. 

 IX. Boron. 



Genus. 



X. Silicium. 

 XI. Titanium. 

 XII. Columbian, 



XIII. Sulphur. 



XIV. Selenium. 

 XV. Arsenic. 



XVI, Phosphorus. 

 XVII. Vanadium, 

 XVIII. Antimony, 



Genus. 



XIX. Tellurium. 

 XX. Mereurv. 

 I XXI. Molybdenum 



XXIX. Tungsten. 



XXIII. Chromium. 



XXIV. Osmi 



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XXV. Rhodium. 



Second Class. — Alkaline Salts, 



The difterent salts composing this class are soluble in water, and 

 possess a marked taste. 



Genus. 



XXVI. Ammonia. 



Genus, 



Genus . 



XXVII. Potash 



I XXVIII. Soda, 



Class 



V 



Earths 



The substances composing this class have a stony aspect ; pure, they 

 are without colour or of a milky white ; they are not generally hard. 

 With the exception of corundum, none scratch glass; their specific 



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exception to this general rule. 



Geniis. 



XXIX. Baryta. 

 XXX. Strontia. 



Genus. 



XXXI. Lime, 

 XXXII. Magnesia. 



Genus. 



XXXIII 



XXXIV. Alumina 



Fourth Class. — Metals, 



This class comprises two divisions, each distinct in aspect : 



1. Native metals, and the combination of -many metals with each 



other in a metallic state. 



2, Combinations of metals with oxygen or with acids. 



The minerals of the first division have generally a metallic lustre, 

 which give? them a remarkable external character, distinguishing 

 them from other minerals. 



The combinations of the metals with oxygen or with acids rarely 

 present this lustre j in xhis respect they range among the 



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Morals 



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