210 M. Arago on the [March, 



Caqueta, the Napo, and the Morona, and which, according to 

 M. Humboldt, probably result from the lateral action of the vol- 

 canos of Popayan and Pasto. 



Volcanos of Asia. 



Elburs, in Persia. 



Tour fan, central region of Asia ; latitude 43° 30' ; longitude 

 87° IT. 



Bisch-Balikh.— Ibid. Latitude 46° 0' ; longitude 76° 11'. 



Avatscha. — Kamtschatka. 



Tolbatchick. — Ibid. ; and three other volcanos more consider- 

 able than the two last. 



Kourile Islands. 

 Nine active volcanos, according to Kracheninnikou. 



Aleutian Islands. 



Four volcanos atOuminga, Ounalaska, Omnak, andOurimack. 

 The last made a great eruption in 1820. 



Islands of Japan. 



Ten volcanos. The island of Niphon, which is the most 

 extensive, contains three. According to the evidence of 

 Kcempfer, several of the volcanos of Japan are subject to very 

 violent eruptions. 



Islands of Lieou-Kievu. 



The Sulphur Island emitted a thick sulphureous smoke, when 

 the Lvra, commanded by Capt. Basil Hall, passed near it on the 

 13th of Sept. 1816. 



Elburs has been mentioned by several travellers as a volcano 

 in activity ; but the fact is doubtful, and at any rate there is no 

 evidence to prove that it has recently made any eruption. 



The mountains of Tout fan and Bisch-Balikh are represented 

 as continually emitting flames and smoke. It is stated that the 

 Kalmucks collect sal ammoniac there, which they export to 

 the different countries of Asia. 



Avatscha made an eruption in 1779, while Capt. Clerke was 

 iu the harbour of St. Peter and St. Paul. In 1787 La Peyrouse 

 aud his companions saw flames and smoke continually at the 

 summit of the same mountain. 



An eruption of Tolbatchink occurred in 1739. A third volcano, 

 and more considerable than the two others, but of which Capt. 

 Clerke does not give the name, ejected a permanent column of 

 smoke from its summit. Since this, two new volcanos have 

 made eruptions at Kamtschatka. 



