of
lead, and the "LEAD YIELDED SILVER EQUIVALENT to 128 ounces, 1
dwt. to the ton" (of 2000 pounds).
"In another, he found the lead obtained from it to yield silver
in the proportion of 72 ounces 5 dwts. to the ton or 2000 pounds.
"The copper specimen was the red oxide, and yielded as follows:
Copper,............ 71.80
Iron,............... 7.84
Oxygen,.............12.34
Silicia, Alumina,....8.02
------
100 parts.
"The Papagos and Pimas Indians, by proper management, might be
made very useful, in working upon the road where there is not
much rock excavation. They are unlike the Indians of Texas, or
the Apaches, living in villages and cultivating the soil, besides
manufacturing blankets, baskets, pottery, etc. Quiet and
peaceable, they have no fears except from their enemies, the
Apaches, and are very industrious, much more so than the lower
order of Mexicans, and live far more comfortably. It is
astonishing with what precision they construct their
acequias--irrigating canals--some of them, the acequias madre, of
very large size, and without the use of levelling apparatus, but
simply by the eye. Their gardens and farms too are regularly
ditched and fenced off into rectangles and circles, with hedges
and trees planted as if done by more enlightened people.
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