168 



VESUVIAN HOCKS 



Upper 

 Gallery. 



Table-case 

 in Recess 4. 



62. — Black scoriaceous lava, containing a coin im- 



edded while in a fluid state. — Eruption of 1842. 



63. — Black scoriaceous lava, similar to the last. 



64. — Scoriaceous black lava, externally weathered 

 yellow. — Eruption of 1855. 



65. — Stalactitic lava, showing lines of viscous flowing 

 cooled close to the mouth of a crater. 



66. — Black spinel, mica and idocrase, with meionite in 

 limestone. — Monte Somma. 



67. — Black spinel, with green augite and mica, partly 

 clouded and decomposed. — Vesuvius. 



68. — Black spinel, with green augite and mica.— Goes* 

 tani, Vesuvius. 



69. — Black Spinel, with augite, epidote, and mica. 



70. — Spinel, mica and green augite. 



71. — Spinel and meionite, in green granular augite. 



72. — Lava, with crystals of augite and leucite. Ex- 

 ternally coated with crystallized iron glance (peroxide of 

 iron.) 



73. — Similar specimen to the last. 



74. — Crystalline calc spar enclosing masses of iron 

 .glance ; partly altered to brown iron ore (hydrated peroxide.) 

 Fossa Grande. 



75. 



th felp 



{silicate of soda and alumina, sulphate of 



felspatho 



76. 



77. 



78. — Meionite and Hauyne in limestone. — Monte Somma. 



Mauro 



79. 



felspar, 

 Somma. 



(silicate of 



and potash) cubical 



80.-— -Lava with leucite crystals, from Capo di Sobo- 



toniello. 



81. — Vesicular red lava with crystals of leucite. 



The material of which part of Pompeii is built. 



82. — Basaltic lava with crystals of augite and leucite. 

 Monte Somma. 





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