of Arroyo. T he eastern end of the island is the least
populous part, and, being exposed to the trade-
winds, there are no sheltered harbours, and the
towns are built back from the coast. T he most
important are Cayey, Naguabo, San Lorenzo, and
Humacao. This is a hilly region with coffee plantations
interspersed with stretches of grazing land.
Near San Lorenzo are some hot springs.
Fajardo is little more than an open roadstead on
a channel sheltered by the group of small islands
heretofore mentioned, but on the south side of the
island of Culebra is a safe port frequented by fishermen
and wood-cutters, though the island itself has no
permanent residents. On the north side of Vieques
is Port Mula at the mouth of a little stream. I t contains
the residence of the local governor, and has
about 1000 inhabitants. On a projecting point is a
lighthouse with a fixed red light. On the south side
of this island is the little village of Isabela Segunda.
The group of islands which extends into the Virgin
Passage are picturesque to look upon, but there is
little industrial life among them.
Among the features of the country along the south
coast of Puerto Rico are occasional marshes, where
salt is prepared for the market. These are found
near Cape Rojo and Guanica and at Salinas. T he
interior towns are mostly points for the collection
of agricultural produce to be sent to the coast, and
they are located altogether in the valleys.