tfie 

 ^8, 



at. 



2 



edii 



9 



ire. 



§^40 



Appa, 

 tie fea, 



I. Bif, 



d pofi. 

 ifts of 



5 ftrata 



^3> 44- 

 td up- 



3terra- 



DIES^» 



p. 57 



2 once 



Frag- 

 [g and 

 dates, 



ng 



of 



nmon 



)0. 



floiie 



CO N T E N t S 





2. Whinftone 



Page 66 



§6 



Wh 



ther in veins or in mafles, 



r 



a fubterraneous lava, 

 argument for fufion; § 

 f,c. Whinftone pel 



fembles lava, § 



I 



r- 



Columnar ftrudure an 

 Not produced by drying, 



charred by whinftone veins, § 68 



§ 



whin interpofed between ftrata, § 70, 7 

 from whin to ftrata not gradual, § 7 



ites, § 66. In- 

 hin, § 67. Coal 

 Difturbance; of 



Phenomena of 

 [ . Tranfition 



A 



chalcedonies in whinftone, 



Mineral alkali found in it by D 



This ftone melted 

 Sir James Hall, § 75. 

 ■ Kenned V. zb. Whin- 



formation, § 76. Porphyry a fpecies 



br variety of whinftone, § 77 



3. Granite. 



P 



82 



'\ 



Granite 



maiTes and veins, § 77. The 



§ 



§ 



Its fufion. 



from the ftrufture o 

 from granite veins, 



§ 



General conclufion as* to 



§ S3, 84, 85 



A anal 



from 



$ 



volcanoes, earthquakes, 





Volcanic fire feated 

 Subterraneous heat not 



accompanied by burning, § 



Tranfmifli 



of 



fubterraneous heat, 

 § 90,91 



&c 



a4 



SECTION 



\ 



