481 



In the groupe of Quito, 0° to 2* south lat. 

 (Chimborazo, Antisana, Cayambe, Coto- 

 paxi,Collanes,Yliniza,Sangai,Tunguragua.) 



In the groupe of Cundinamarca, lat. 41° north 

 (peak of Tolima, on the north of the Andes 

 of Quindiu). 



In the groupe of Anahuac, from lat. 18° 59' to 

 19° 12' (Popocatepetl or Great Volcano of 

 Mexico and Peak of Orizaba). If we con- 

 sider the maritime Alps or mountains of 

 California and New Norfolk, either as a 

 continuation of the western chain of Mex- 

 ico, that of Sonora, or, as being linked by 

 counterforts to the central chain, that of 

 the Rocky Mountains, we may add to the 

 three preceding groupes : 



The groupe of Russian America, from lat, 60° 

 to 70° (Mont Saint Elie). On an extent of 

 63° latitude, I know only twelve summits 

 of the Andes that reach the height of 2600 

 toises, and consequently surpass 140 toises 

 the height of Mont Blanc. Three only of 

 the twelve summits are placed on the north 

 of the isthmus of Panama. 



p. Insulated Groupe of the snowy Moun- 

 tains of Santa Marta. In the enumeration of 

 the different systems of mountains, I place this 

 groupe before the chain of the shore of Vene- 



VOL, VI. 2 K 



