Porto Rican Soils. 165 



1 1' 3 4 



Soil (3) 3 10 36 52 



Subsoil (2) 3 11 43 43 



Acres. 

 A recibo to Ponce, P. R 29, 890 



Alonso clay. — Dark purplish-red clay loam, 8 to 28 inches deep, 

 underlain by dark to purplish-red tenacious clay 36 inches or more 

 in depth. Derived from igneous and volcanic rocks. Heavy, 

 stiff, and hard to cultivate. Rough, mountainous topography. 

 The small area southwest of Adjuntas is well adapted to oranges 

 and coffee. The other areas are lower and produce chiefly bananas 

 and plantains, with some coffee. 



1 •-' 3 4 



Soil (n) 10 22 35 37 



Subsoil (2) 4 15 37 44 • 



Acres. 

 Arecibo to Ponce, P. R 13, 690 



Penuelas adobe. — Brown loam, with marked adobe properties, 18 



to 15 inches deep, underlain by cracked and broken volcanic tufa. 



Derived from disintegrated volcanic tufa. Occupies hills and 



gentle slopes around Penuelas. Too dry except for pasture. Some 



bananas grown on moist spots. 



12 3 4 



Soil (2) 14 IS 28 41 



Subsoil (1) 59 23 9 9 



Acres. 

 Arecibo to Ponce, P. R 6, 680 



Portugnes adobe. — Heavy, dark-brown or black loam resembiing 

 adobe, 6 to 17 inches deep, formed from decomposed limestone. 

 Occupies parting valleys and gentle slopes around limestone hill? 

 in southern part of area. Soil is underlain ])y heavy light-brown 

 loam, becoming lighter in color with increasing depth. Devoted 

 chiefly to pasture, but produces sugar cane and bananas where 

 irrigation is practicable. A large part of the area lies too high for 

 irrigation. 



12 3 4 



Soil (2) : 6 20 32 33 



Subsoil (2) 5 14 24 38 



Acres. 

 Arecibo to I'once, P. R 4,010 



s 



