266 



EXTINCT VOLCANOS 



Upper 

 Gallery. 



Table-case 

 in Recess 6. 



131. — Basaltic lava,* with breislakite (stained by oxide 

 of manganese), apatite, and abrazite. 



132. — Compact basaltic lava,* with abrazite. 



133. — Basaltic lava,* with abrazite on calc spar. 



134. — Basaltic lava,* with crystals of nepheline, car- 

 bonate of copper, leucite, fyc. 



135. — Basaltic lava,* with augite, leucite, breislakite, 

 nepheline, and apatite. 



i 



136. — Basaltic lava,* ivith mesotype. 

 137. — Idocrase, with small scales of mica, and pale grey 

 decomposed nepheline. — From the decompased ashes of 



Monte Albano. 



138. — Granular icespar, iridescent augite, melanite, 

 and scales of black mica. — Found lining cavities in peperino 

 round the sides of Lake Albano. 



139. — Icespar, with rhombic dodecahedrons of melanite. 



From the peperino in the neighbourhood of Albano. 



140. — Detached prismatic crystals of 

 Tusculan and Alban Hills. 



From the 



141. — Lamellar mica. — From the ashes of the Roman 

 States. 



142. — Mica, with augite and felspar. — From the loose 



peperino of Latium. 



143. — Mica, crystallized on small green crystals of augite. 



From the borders of Monte Cavo. 



144. — Hexagonal prisms of mica, with augite, Hauyne, 



olivine. &c — From Monte Cavo, above Albano. 



145. 



Mica in green laminae, and in black hexagonal 



crystals, with chrysolite (olivine) and phillipsite. ~ Monte 

 Albano. 



146. — Augite, with black mica. — From Monte Albano. 



147. — Leucite, with idocrase and mica. — From the 

 neighbourhood of Lake Albano. 



148.— Mica, augite, and crystals of melanite. — From 



Monte Albano. 



* No. 131 to 136, from Capo di Bove, attract the magnetic needle. 



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156. 



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