[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 Tagal 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 is red and as large as a medium-sized quince, and has several large stones. The inside of the fruit is white, and is sweet and firm, and fragrant, but not very digestible. The wood resembles ebony, is very lustrous, and is esteemed for its solidity and hardness. The _nanca_ [_nangka_, _nangca_; translated by Stanley, jack-fruit] (_Artocarpus integrifolia_--Willd.), was taken to the Philippines from India, where it was called _yaca_. The tree is large and wide-spreading, and has long narrow leaves. It bears fruit not only on the branches, but on the trunk and roots. The fruit is gathered when ripe, at which time it exhales an aromatic odor. On opening it a yellowish or whitish meat is found, which is not edible. But in this are found certain yellow stones, with a little kernel inside resembling a large bean; this is sweet, like the date, but has a much stronger odor. It is indigestible, and when eaten should be well masticated. The shells are used in cooking and resemble chestnuts. The wood is yellow, solid, and especially useful in making certain musical instruments. Buzeta and Bravo (_Diccionario_, i, p. 35) say that there are more than fifty-seven species of bananas in the Philippines.