Notes on the forest conditions of Porto Rico . st reachsouthward nearly across the island. The most eastern of these is theLoiza, which rises only 8 miles north of Arroyo, on the south coast; theEio de la Plata, which rises the same distance north of G-uayama, andreaches the north coast near the central meridian of the island: theEio Grande, which rises 12 miles north of Ponce, near Adjuntas, andempties into the sea near Arecibo. Besides the wide alluvial plains near the mouths of the streams, tobe described later, the lower stretches of these northern streams pre-sent considerable areas of bo
Notes on the forest conditions of Porto Rico . st reachsouthward nearly across the island. The most eastern of these is theLoiza, which rises only 8 miles north of Arroyo, on the south coast; theEio de la Plata, which rises the same distance north of G-uayama, andreaches the north coast near the central meridian of the island: theEio Grande, which rises 12 miles north of Ponce, near Adjuntas, andempties into the sea near Arecibo. Besides the wide alluvial plains near the mouths of the streams, tobe described later, the lower stretches of these northern streams pre-sent considerable areas of bottom land, extending for some distanceswithin the margin of the mountain area, rarely broadening out intolocal circular mountain valleys. Their upper portions are steep angu-lar gorges, however, where habitations are confined to the slopes andnot the valleys. There are other streams of the island which also pre-sent small areas of bottom land, indenting the mountainous area for a Bulletin No. 25, Div. of Forestry, U. S. Dept. of Agr Plate Fig. 1.—View of South Coast, showing Coast Hills, Playa Plains, and Central Mountains.
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