io6 



RUBBER AND 



beyond the provision of a drain on one or both sides 

 of the trace, and the building of suitable culverts or 

 paved watercourses to prevent breaching by floods. 



Lining and Spacing. 



The positions of the holes in which the trees will 

 be planted must next be marked out in lines at right 

 angles to a given base. It is important that these lines 

 should be laid out accurately in order to allow of an 

 uninterrupted view through the estate. If the first line 

 is laid out accurately, others can readily be placed by 

 simple measurement. A method of placing a line at 

 right angles to a base line is shown in the diagram. If 

 AC is made equal to BC and AD to BD the line CD 

 will be at right angles to the line AB. 



Planting Distances. 



The distance at which the trees should be spaced 

 is a matter which has given rise to much discussion. 

 The distances generally favoured in the Malay Peninsula 



