Porto Hican Soils. 161 



PORTO Rl( AN SOILS. 



Biverwash. — Coarse sand, gravel, and bowlders, generally in 



long, narrow areas, but occasionally spread out in fan-shaped 



areas, subject to overflow in times of flood. Of little or no 



agricultural value. 



Acres. 

 Arecibo to Ponce, P. R 970 



Portugues stony loam. — Dark loam 14 inches in depth, derived 

 from igneous and volcanic rocks. Contains 5 to 70 per cent of 

 angular stones, and is underlain by cracked and broken vok-anic 

 and igneous rock partly decomposed. Occupies steep slopes of 

 hills and mountains, covering a large area between Ponce and 

 Adjuntas. Used for pasture during the rainy season. Some 

 coffee, bananas, and plantains are produced on favored areas. 



1 J 3 4 



Soil (2) 37 20 24 19 



Acres. 

 Arecibo to Ponce. P. R 15, 600 



Tanama stony loam. — Soil is a red clay loam, 6 to 10 inches 

 deep, derived from limestone. Occupies large area of broken and 

 rugged country between Arecibo and Utuado, characterized by 

 local, swampy sink holes. Subsoil is a stiff red clay containing 

 limestone fragments. Bananas and plantains are the principal 

 crops, and some coffee, oranges, and a little tobacco are produced, 



1 ■-' 3 4 



Soil (3) 6 17 31 44 



Subsoil (2) 12 32 Ifi 40 



Acres. 

 Arecibo to Ponce, P. R 41, 680 



Arecibo sand. — A loose, incoherent red to white coral and quartz 

 sand, 12 to 36 inches or more deep. Occupies slightly rolling 

 land. Soil is probably derived from wind-blown beach sand. 

 Naturally poor soil. Similar to the Florida pineapple land. 

 Produces some pasturage and a few cocoanuts. 



1 -2 3 4 



Soil (2) • 54 42 4 2 



Subsoil (1) 35 57 4 4 



.T.cres. 

 Arecibo to Ponce, P. R 7, 580 



31896—04 11 



