178 EVENTS AT 
country between them and the Gila, as well as that 
between them and the Mexican frontier post of Janos, 
about one hundred and fifty miles to the south, in the 
State of Chihuahua. 
s it was necessary, in carrying the survey west- 
ward, to establish depots of provisions at accessible 
points, I sent Dr. Webb to the Copper Mines, as I have 
before stated, to see what its advantages were, witha 
view, too, of making it the head-quarters of the Com- 
mission during the progress of the survey in that 
quarter. After an absence of three weeks, that gen- 
tleman returned and made so favorable a report, that 1 
instructed Quarter-master Myer to remove thither with 
the wagons, mules, camp equipage, etc., not needed 
by the parties in the field. I also instructed Mr. 
Henry Jacobs, acting Commissary, to deposit there at 
the same time all the subsistence and other stores 
his department. I annex a brief extract from Dr. 
Webb’s report :— | 
“The result at which I have arrived is, that the 
Copper Mines are preferable to any other spot in this 
section for the establishment ofa depot of provisions 
and other stores, and for the location of the head- 
quarters of the Boundary Commission; being nearer 
the region which must be the field of labor the ensuing 
season; and as both property and person will be as 
secure and free from predatory attacks there as they 
can be elsewhere, provided a suitable military g4¥4 
is furnished for their protection. 
“The essentials of a good situation for the pur- 
poses had in contemplation present themselves at Santa 
Rita (the proper name of the copper mine region), 2 
