Note 17 — Chapter IX

Reference is here made to the great western mountain range of Luzón, the Caraballos Occidentales; it is nearly 200 miles long, and, including its subordinate ranges, one-third as broad. It is really a system of mountains, its central range forming the divide between the waters flowing to Cagayán River on the east and those flowing to the China Sea on the west. Its southern portion is called Cordillera Sur, which, bending eastward, under the name of Caraballos Sur joins the Sierra Madre or eastern coast range. This last range stretches along the eastern side of Luzón, from the northeastern point of the island to Laguna de Bay, a distance of 350 miles, and divides the waters of the Cagayán valley (which is about 50 miles wide, and 160 in length) from those of the Pacific slope. See Census of Philippines, i, pp. 60, 61. ↑