RIVERS AND LAKES OF MEXICO. 



21 



las, whence it takes a south-west course and receives, at the foot 

 of the Monte de Sal Gemme, the Rio de Nuestra Senora de 

 Dolores, which springs about 1° 30' west of the Rafael, in the 

 Cerro de la Plata ; and, thus, receiving the accretions of a number 

 of other streams, it courses onward until it is lost at the head of the 

 Gulf of California. The whole length of the Colorado is esti- 

 mated at about two hundred and fifty leagues. For about fifty 

 leagues it is navigable by small sea going vessels ; and, for about a 

 hundred leagues higher, it may be traversed by large boats. The sea 

 is said to ebb and flow between thirty-five and forty leagues beyond 

 the mouth of this river. The sources of the Arkansas and of the 

 Rio Grande del Norte lie very near those of the Colorado ; so 

 that the waters of the Gulf of Mexico and of the Gulf of California 

 are nearly united by these streams across our continent. 



15th. The Rio Gila rises in the Sierra de los Mimbres, and de- 

 scends to the south, through a small and mountain bound valley 

 until it unites with the Colorado. 



IV. Lakes, Lagunes, &c. 



1. Timpanogos and Teyugo or Salado. 



2. Lagunas de Bavispe, San Martin, de Guzman, de Patos, 

 de Encinillas and de Castilla in the state of Chihuahua. 



3. The Laguna de Cayman in the Bolson de Mapimi. 



4. The Lakes of Parras and Agua Verde on the west boun- 

 dary of Coahuila. 



5. The Lakes of Charcas, Chairel and Chila in the state 

 of San Luis Potosi. 



6. Nine small Soda Lakes in Zacatecas. 



7. The large and important Lake of Chapala and others in 

 Jalisco. 



8. Pazcuaro, Cuizco, Araron, Huango, Tanguato, and Hu- 

 aniquo in Michoacan. 



9. The five large Lakes of Tezcoco, Chalco, Xochimilco, 

 San Cristoval and Zumpango in the valley of Mexico. 



10. The Lakes of Atenco, Coatetilco, and Tenancingo in 

 the valley of Toluca. 



11. A number of small ones in Oajaca. 



12. The Lakes of Tampico, Catemaco, Alijoyuca, Te- 

 nango, Chiapa on the gulf coast or near it. 



13. The Lake of Yurirapundaro in Guanajuato. 



