f his death is not known.

DIAMANTE, JUAN BAUTISTA (1640?-1684?), Spanish dramatist, was born at
Castillo about 1640, entered the army, and began writing for the stage
in 1657. He became a knight of Santiago in 1660; the date of his death
is unknown, but no reference to him as a living author occurs after
1684. Like many other Spanish dramatists of his time, Diamante is
deficient in originality, and his style is riddled with affectations;
_La Desgraciada Raquel_, which was long considered to be his best play,
is really Mira de Amescua's _Judia de Toledo_ under another title; and
the earliest of Diamante's surviving pieces, _El Honrador de su padre_
(1658), is little more than a free translation of Corneille's Cid.
Diamante is historically interesting as the introducer of French
dramatic methods into Spain.

DIAMANTINA (formerly called _Tejuco_), a mining town of the state of
Minas Geraes, Brazil, in the N.E. part of the state, 3710 ft. above
sea-level. Pop. (1890) 17,980. Diamantina is built partly on a steep
hillside overlooking a small tributary of the Rio Jequitinhonha (where
diamond-washing was once carried on), and partly on the level plain
above. The town is roughly but substantially built, with broad streets
and large squares. It is the seat of a bishopric, with an episcopal
seminary, and has many churches. Its public buildings are inconspicuous;
they include a theatre, military barracks, hospitals, a lunatic asylum
and a secondary school. There are several small manufactures, including
cotton-weaving, and diamond-cutting is carried on. The surrounding
region, lying on the eastern slopes of one of the lateral ranges of the
Serra do Espinhaco, is rough and barren, but rich in minerals,
principally gold and diamonds. Diamantina is the commercial centre of an
extensive region, and has long been noted for its wealth. The date of
the discovery of diamonds, upon which its wealth and importance chiefly
depend, is uncertain, but the official announcement was made in 1729,
and in the following year the mines were declared crown property, with a
crown reservation, known as the "forbidden district," 42 leagues in
circumference and 8 to 16 leagues in diameter. Gold-mining was forbidden
within its limits and diamond-washing was placed under severe
restrictions. There are no trustworthy returns of the value of the
output, but in 1849 the total was estimated up to that date at
300,000,000 francs (see DIAMOND). The present