girl who, when I offered my hand, thanked me with a bow, saying,
"Tengo las sarnas" ("I have the itch"). The malady, which is very
common in the Philippines, appears to have its focus in this locality.

[Gneiss and crystalline rock.] A quarter of a league N.N.E. we came
upon the ruins of another mining undertaking, the Ancla de Oro. Shaft
and water-cutting had fallen in, and were thickly grown over; and
only a few of the considerable buildings were still standing; and
even those were ready to fall. In a circle some natives were busily
employed, in their manner, collecting grains of gold. The rock is
gneiss, weathered so much that it cannot be recognized; and at a
thousand paces on the other side is a similar one, clearly crystalline.

[Hornblende and hornblende slate.] Half a league N. by E. from Mambulao
is the lead-mountain of Dinianan. Here also all the works were fallen
in, choked with mud and grown over. Only after a long search were
a few fragments found with traces of red-lead ore. This mountain
consists of hornblende rock; in one place, of hornblende slate,
with very beautiful large crystals.

[Copper.] A league and a half S. from Mambulao a shallow hollow in
the ground marks the site of an old copper-mine, which must have
been eighty-four feet deep. Copper ores are found in several places
in Luzon; and specimens of solid copper were obtained by me at the
Bay of Luyang, N. of the Enseñada de Patag, in Caramuan.

[Unsuccessful copper-mining.] Very considerable beds of copper ore
occur in Mancayán, in the district of Lepanto, and in the central
mountain-range of Luzon between Cagayán and Ilocos, which have been
worked by a mining company in Manila since 1850; but the operations