hy Alexander von Humboldt. xxix 



Armenia (in the district of the Caucasus), and belong to 

 two quite distinct systems, one running S.E. to N.W., the 

 other S.S.W. to N.N.E. 



In the Hawaiian Archipelago (or Sandwich Island group), 

 we find Mauna Loa, according to Wilkes, 12,900 feet in 

 height, which does not present any cone of volcanic scoriae 

 (resembling, in this particular, the volcanoes of the Eifel), 

 but has emitted streams of lava. The lava basin of Killauea, 

 13,000 feet in its greatest, by 4800 in its smallest diameter, is 

 not a solfatara, but a true lateral vent on the flank of the 

 powerful Mauna Loa itself, exactly resembling the less 

 elevated sheet of water of Arak. Mauna Kea is 180 

 feet higher than Mauna Loa, but is extinct. Tafoa and 

 Amangura, in the Tonga group, are still in eruption, 

 the last discharge of lava having occurred in July, 1847. 

 The volcano of Tanna was in full eruption during Capt. 

 Cook's Voyage of Discovery in 1774, as was also the 

 volcano of Ambrym, west of Malicollo in the archipelago 

 of the New Hebrides. At the south point of New Cale- 

 donia, lies Matthew's Rock, a small smoking rocky island. 

 The volcano of Santa Cruz, N.N.W. of Tina Kora, with 

 periodical eruptions occasionally occurring at intervals of 10 

 minutes, had been already noticed as a volcano by Mendana, 

 so far back as 1595. In the Salomon Archipelago, there is 

 found the volcano of Sesarga, while others are said to 

 be in full activity in the Marianas or Ladrones, just like 

 those of Guguan, Pagon, and El Volcan Grande de 



