268 PERU. 



In the district of Santa Rosa, lying west of Zauricocha, the greatest 

 quantity of ore has been raised : it has been worked down to the level 

 of the adit ; and in several mines, where good ore has been discovered, 

 they have descended to a lower level, drainage having been effected by 

 hand-pumping. 



On the east of the Zauricocha is the district called Arenillapata, 

 in which few mines are now worked ; the ore which is produced, 

 although abundant in particular spots, is not rich. 



Immediately wdthin the town there are some few mines that are 

 good, but there has never been any extensive work carried on. It is 

 believed that profitable ore yet remains to be discovered. 



Cayac, another district lying north of Zauricocha, is worked to 

 some profit ; the upper adit from the northwest reaches it, and several 

 mines in it have been yielding good returns. 



To the north of Cayac are the Chucarillo and Zauracancha dis- 

 tricts, the working of the mines in which had been impeded by water 

 accumulated since the breaking out of the revolutionary war. The 

 upper adit, leading from the gully of Rumiallana, is carried above 

 them, and they consequently derive no benefit from it. 



To the north of these last two districts lies the plain of San Juan ; 

 there are a few small veins running through some parts of it, but no 

 important discovery has yet been made, although many mines have 

 been opened and carried down to depths of from one hundred and 

 twenty to one hundred and fifty feet. The lower adit, from the gully 

 of Rumiallana, is to run through it, and may open to the proprietors 

 some discoveries to recompense them for their labour. 



The whole number of mines considered rich in the different districts, 

 may be enumerated as follows : 



In Zauricocha 12 to 14. 



Santa Rosa 20 to 25. 



Cayac 10 to 12. 



Chucarillo 5 to 6. 



Zauracancha 10 to 12. 



Each of these mines comprises a space of one hundred and eighty 

 feet long by ninety feet wide. 



The silver ores are estimated by a measure called a box of ore, 

 which contains twenty-five mule-loads of ten arrobas or twenty-five 

 pounds each. Each box varies in value from six Spanish marks to 

 three thousand ; the former being the lowest which, under the most 

 favourable circumstances, will pay the cost of working. The poorest 

 is of course the most abundant. 



