11 



they are filled with good soil, or soil mixed with manure. 

 It is however scarcely ever possible to obtain manure in 

 sufficient quantity. Besides in fallow grounds this would 

 mean a superfluous expense. 



The young plant, thus placed in good ground, grows 

 rapidly and soon bears fruit, but as soon as the root touches 

 the harder and less fertile soil at the bottom and at the 

 sides of the hole, the tree commences to languish and often 

 dies shortly afterwards. To avoid this evil the hole is en- 

 larged by means of the patjol before filling. 



When the grounds are prepared in the above-men- 

 tioned way, paths are traced in them and, in the plains ditches 

 are made for draining purpose; next, trees are planted to 

 obtain the shade required, whenever the trees which have 

 been left intact are not sufficient. 



§ 3. Trees for giving shade. 



The „dadap" (hypophorus subumbrans) and the 

 ,,Albizzia molucana" are commonly used in order to en- 

 sure shade. 



Of late very successful experiments have been made 

 with the „Pithe colobium saman". This tree, being of a 

 very vigorous growth and affording dense shade the 

 trimming thereof is very expensive, consequently the 

 tree is rarely used. For some years past the „Deguelia 

 microphylia" has been used; it soon shoots, does not 

 become too tall and does not give too much shade. The 



