enter of the general divide,
or watershed. It rises in the sierra of Cayey, and, with the name of
Pinones river, it flows northwest, passing through Aibonito, Toa Alta,
Toa Baja, and Dorado, where it discharges into the Atlantic to the
west of the preceding river.

The Manati river is bounded on the cast and south by the Sierra Grande
and on the west by the Siales ridge. It rises in the Sierra Grande,
and parallel with the preceding river, it flows through Siales and
Manati, to the north of which latter town it empties into the Atlantic.

The Arecibo river is bounded on the east by the Siales mountain
ridge, on the south by the western extremity of the Sierra Grande,
and on the west by the Lares ridge. It rises in the general divide,
near Adjuntas, and flows north through the town of Arecibo to the
Atlantic, shortly before emptying into which it receives the Tanama
river from the left, which proceeds from the Lares Mountains.

The Culebrina river is bounded on the south and east by the
Lares mountain ridge, and on the north by small hills of little
interest. From the Lares Mountains it flows from east to west and
empties on the west coast north of San Francisco de la Aguada, in
the center of the bay formed between Point Penas Blancas and Point
San Francisco.

The Anasco river is formed by the Lares mountain ridge. It rises in
the eastern extremity of the mountains called Tetas de Cerro Gordo,
flowing first northwest and then west, through the town of its name
and thence to the sea.

The Guanajivo river has to its north the ramifications of the Lares
ridge, to the east the Tetas de Cerro Gordo Mountains, and on the
south Torre Hill. In the interior of its basin is the mountain called
Cerro Montuoso, which separates its waters from those of its affluent
from the right, the Rosaria river. It rises in the general divide,
flowing from east to west to Nuestra Senora de Montserrat, where it
receives the affluent mentioned, the two together then emptying south
of Port Mayaguez.

The Coamo river is bounded on the west and north by the Sierra Grande,
and on the west by the Coamo ridge. It rises in the former of these
sierras, and flowing from north to south it empties east of Coamo
Point, after having watered the town of its name.

The Salinas river is bounded on the west by the Coamo ridge, on the
north by the general divide, and on the east by the Cayey ridge. It
rises in the southern slopes of the Sierra Grande and fl