382 COSMOS. 



Albuquerque* (lat. 35 8'), height 4849 feet, Ws. 



Paso del Norte,t on the Rio Grande del Norte (lat. 29 48'), 

 height 3790 feet, Ws. 



Chihuahua (lat. 28 32 X ), 4638 feet, Ws. 



Cosiquiriachi, 6273 feet, Ws. 



Mapimi, in the Bolson de Mapimi (lat. 25 54 X ), 4782 feet, 

 Ws. 



Parras (lat. 25 32'), 4986 feet, Ws. 



Saltillo (lat. 25 10'), 5240 feet, Ws. 



Durango (lat. 24 25'), 6849 feet, according to Oteiza. 



Fresnillo (lat. 23 10'), 7244 feet, Bt. 



Zacatecas (lat. 22 500, 9012 feet > i:t - 



San Luis Potosi (lat. 22 8 X ), 6090 feet, \Bt. 



Aguas Calientes (lat. 21 53'), 6261 feet, Bt. 



Lagos (lat. 21 20'), 6376 feet, Bt. 



Villa de Leon (lat. 21 7'), 6134 feet, Bt. 



Silao, 5911 feet, Bt, 



Guanaxuato (lat. 21 0' 15' 7 ), 6836 feet, Ht. 



Salamanca (lat. 20 40 7 ), 5762 feet, Ht. 



Celaya (lat. 20 38'), 6017 feet, Ht. 



Queretaro (lat. 20 36' 39"), 6363 feet, Ht. 



San Juan del Rio, in the state of Queretaro (lat. 20 30'), 

 G490 feet, Ht, 



Tula (lat. 19 57'), 6733 feet, Ht. 



Pachuca, 8140 feet, Ht, 



Moran, near Real del Monte, 8511 feet, Ht. 



Huehuetoca, at the northern extremity of the great plain 

 of Mexico (iat. 19 48'), 7533 feet, Ht. 



Mexico (lat. 19 25' 45"), 7469 feet, Ht. 



Toluca (lat. 19 16'), 8825 feet, Ht. 



Venta de Chalco, at the southeastern extremity of the great 

 plain of Puebla, 7712 feet, Ht. 



San Francisco Ocotlan, at the western extremity of the 

 great plain of Puebla, 7680 feet, Ht, 



Cholula, at the foot of the ancient graduated Pyramid, 

 (lat. 19 2'), 6906 feet, Ht. 



above the level of the sea, according to Emory, is 6844 ; according to 

 Wislizenus, fully 7046 feet (mean measurement 6950) ; it therefore 

 resembles that of the Spliigen and Gotthard passes in the Swiss Alps. 



* The latitude of Albuquerque is taken from the beautiful special 

 map, entitled Map of the Territory of New Mexico, by Kern, 1851. 

 Its height, according to Emory (p. 166), is 4749 feet; according to 

 Wislizenus (p. 122), 4858. 



t For the latitude of the .Paso del Norte compare Wisliz., p. 125, 

 Mat. Tables 8-12, Aug., 1846. 



