MINING DISTRICTS. 339 



lead and tin from the veins of Tlacheo, and obtained 

 cinnabar from the mines of Chilapan. From copper 

 found in the mountains of ZacotoUan and Cohuixico 

 they manufactured their arms, axes, chisels, and 

 other implements. With the use of iron they seem 

 to have been unacquainted ; but tliey contrived to 

 give the requisite hardness to their tools by mixing 

 a portion of tin with the copper of which they were 

 composed. 



At the period when Humboldt visited New-Spain, 

 it contained nearly 500 places celebrated for the me- 

 tallic treasures in their vicinity, and comprehending 

 nearly 3000 mines. These were divided into 37 dis- 

 tricts, under the direction of an equal number of 

 councils {Diputaciones de mineria), as follows : — 



I. Intendancy of Guanaxuato. 

 1. Mining District ofGuanaxuato. 



n. Intendancy of Zacatecas. 



2. Zacatecas, I 4. Fresnillo, 



3. Sombrerete, I 5. Sierra de Pinos. 



III. Intendancy of San LuisPotosi. 

 9. Ojocaliente, 



10. San Nicolas de Croix. 



6. Catorce, 



7. Potosi, 



8. Charcas, 



IV. Intendancy of Mexico. 



11. Pachuca, I 15. Zacnalpan, 



12. El Doctor, I 16. Sultejiec, 



13. Zuriapan, 1 17. Temastaltepec. 



14. Tasco, I 



v. Intendancy of Guadalaxar a. 



18. Bolanos, I 20. Hostotipaijuillo. 



19. Asientosde Ibarra, | 



VI. Intendancy of Thtrango. 



21. Chihuahua, 24. Cosiguiriachi, 



22. Parral, 25. Batopilas. 



23. Guarisamey, 



VII. Intendancy of Sonora. 



26. Alamos, 



27. Copala, 



28. Cosala, 



29. San Francisco Xavier de la 



Huerta, 



VUI. Intendancy of Valladolid. 

 33. Angangueo, 1 35. Zilaquaro, 



S4. Inguaran, | 36. Tialpajahua, 



30. Guadalupe de la Puerta, 



31. Santissitna Trinidad de Pena 

 Blarica, 



32. San Francisco Xavier de Alisos. 



