360 OKES OF SANTA EULALIA. Book II. 
raised. Most of the mines of Santa Eulalia, according to 
this definition, may be considered as without owners, and 
may be taken by any one, whether a native or a foreigner, 
who is able to work them. The gentlemen of Chihuahua 
who, during my residence there, built new smelting-works 
on the Junta, found it more profitable to buy the ore at 
Santa Eulalia than to work a mine on their own account. 
As regards their composition, the ores of Santa Eulalia 
are the poorest in the State of Chihuahua, and it has been 
only by the enormous quantities of the ore that such large 
results have been obtained. It seldom contains more than 
three ounces of silver to a carga or 300 lbs. of ore. 
The following day I was compelled by the fever to keep 
my bed, and was obliged to return to Chihuahua in a 
carriage, being unable to sit my horse. 
Some longer journeys which I undertook from Chihuahua 
will form the subject of the next chapter. 
