that naval architecture. It has vanished, without modern improvements
having come to replace it in such proportion as, during the past
centuries, has occurred in adjacent countries....--_Rizal_.

[72] It seems that some species of trees disappeared or became
very scarce because of the excessive ship-building that took place
later. One of them is the _betis_.--_Rizal_.

Blanco states (_Flora_, ed. 1845, p. 281) that the betis (_Azaola
betis_) was common in Pampanga and other regions.

Delgado describes the various species of trees in the Philippines
in the first six treatises of the first part of the fourth book
of _Historia general de Filipinas_ (Manila, 1892). He mentions by
name more than seventy trees grown on the level plains and near the
shores; more than forty fruit-trees; more than twenty-five species
grown in the mountains; sixteen that actually grow in the water; and
many kinds of palms. See also _Gazetteer of the Philippine Islands_
(Washington, 1902), pp. 85-95, and Buzeta and Bravo's _Diccionario_
(Madrid, 1850), i, pp. 29-36.

[73] _Sanctor_ is called _santol_ (_Sandoricum indicum_--Cavanilles),
in Delgado (_ut supra_, note 71). The tree resembles a walnut-tree. Its
leaves are rounded and as large as the palm of the hand, and are
dark green in color. Excellent preserves are made from the fruit,
which was also eaten raw by the Indians. The leaves of the tree
have medicinal properties and were used as poultices. _Mabolo_
(_Diospyros discolor_--Willd.) signifies in Tagál a thing or
fruit enclosed in a soft covering. The tree is not very high. The
leaves are large, and incline to a red color when old. The fruit