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 Zacotollan and Cohuixico 

 they manufactured their arms, axes, chisels, and 

 other implements. With the use of iron they seem 

 to have been unacquainted ; but they 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 Guanajuato, 



1. Mining District ofGuanaxuato. 



H. Intendancy of Zacatecas. 



2. Zacatecas, I 4. Fresnillo, 



3. Sombrerete, | 5. Sierra de Finos. 



III. Intendancy of San Luis Potosi. 



6. Catorce, 



7. Potosi, 



9. Ojocaliente, 

 10. San Nicolas deCroix. 



8. Charcas, 



IV. Intendancy of Mexico. 



11. Pachuca, I 15. Zacualpan, 



12. El Doctor, | 16. Sultepec, 



13. Zuriapan. I 17. Temastaltepec. 



14. Tasco, I 



V. Intendancy of Guadalaxara. 



18. Bolanos, | 20. Hostotipaquillo. 



19. Asientos de Ibarra, 



VI. Intendancy of Durango. 



21. Chihuahua, 



22. Parral, 



23. Guarisamey,' 



26. Alamos, 



27. Copala, 



28. Cosala, 



29. San Francisco Xavier de la 



24. Cosiguiriachi, 



25. Batopilas. 



VII. Intendancy of Sonora. 



Huerta, 



VIII. Intendancy of Valladolid. 



33. Angangueo, I 35. Zitaquaro, 



34. Inguaran, 36. Tlalpajahua. 



30. Guadalupede laPuerta, 



31. Santissima Trinidad de Pena 



Blanca, 



32. San Francisco Xavier deAlisos. 



