76 SHADE IN COFFEE CULTUEE. 



Silk cotton tree. (See Ceiba pentandra.) 

 Siris (British India). (See Albizzia lehoek.) 

 Soja (or Soy) bean. (See Soja hispida.) 

 Soja hispida. Soja be ax or Soy beak. 



The planting of the soja bean as a green manure for coffee is suggested by Lecornte. 

 Sorghum. (See Andropogon sorghum.) 

 Spanish Cedar. (See Cedrela odorata.) 



Spondias dulcis. Otaheite apple. 



A tree native in Polynesia, bearing an edible fruit having the flavor of pineapple. 

 It is now cultivated in many tropical countries and is among those recommended by 

 Morris for planting as windbreaks for cacao plantations in Jamaica. 



Spondias graveolens. (See Spondius lutea.) 



Spondias lutea. 



Synonym. — Spondias graveolens. 

 Common names. — Hog-plum; Jobo. 



Family Anacardiaceae. One of the most common trees in Porto Rico, planted 

 extensively for shade and for the sake of its edible fruits. It grows readily from 

 large cuttings, and, with Bursera simaruba, the "alrnacigo," is preferred for stakes 

 and fence posts, which are permanent because they take root and remain alive. This 

 would render very easy the planting of shade trees by cuttings. The fruits are oval 

 and attain a length of 1J inches. The skin is very thin and incloses a pleasantly 

 acid pulp surrounding a nut-like seed. The tree attains a height of 40 feet or more 

 and a diameter of from 1 to 2 feet, but the wood is light and soft (specific gravity 

 0.457), and is very little used except in the way explained above. The fruits of this 

 species are yellow and are said to be inferior to those of Sp>ondias purpurea. " Hog- 

 plum " is a Jamaica name and does not, as might appear, involve any reflection on 

 the quality of the fruit, but refers to the fact that hogs are extremely fond of the 

 "plums," on which they fatten rapidly. 



The use of this tree for shade in cacao plantations in Jamaica was suggested by Dr. 

 Morris, but it is not known whether the experiment has proved successful. It is 

 used for coffee shade in the recently established plantations of the German colony 

 of Kamerun. (Froehner.) 



Sponia wightii. (See Trema orientalist) 



Sugar cane. (See Saccharum officinarum .) 



Surian (Java). (See Cedrela odorata.) 



Swietenia mahagoni. Mahogany. 



Common names. — Acajou de Saint Domingue (Guadeloupe); Mahogani (Guade- 

 loupe). 

 Family Meliaceae. This is the tree yielding the original West Indian or Spanish 

 mahogany, as well as that of the mainland of Central and South America. It has 

 been used for shade in cacao plantations in the island of Guadeloupe, and according 

 to Guerin is preferable to Erythrina indica, since it resists parasites, and the wood is 

 valuable after thirty or forty years. In Trinidad the planting of mahogany under 

 forest conditions has been advocated by Superintendent Hart, of the Botanical Gar- 

 dens, who finds that under favorable conditions the annual average increase of thick- 



