INTRODUCTION 



thrive, this exotic tree is destined to become the 

 chief, if not the only, source of Rubber exported 

 from the country. The authors record their own 

 valuable experience in the planting and treatment 

 of this tree. 



Coffee, also, has been a great success. Several 

 kinds of Coffee are being grown, but chiefly Coffea 

 arabica. The product of Uganda has been well 

 received commercially. Unfortunately the serious 

 news has just arrived of the appearance of Coffee 

 leaf disease. This fungoid disease being in- 

 digenous will, it is hoped, be easier to deal with 

 than proved to be the case in Ceylon, where its 

 unfortunate introduction caused vast damage, and 

 finally led to the abandonment of a crop which at- 

 one time promised to be the chief agricultural 

 product of the island. 



A botanist of great distinction, the late 

 Professor Marshall Ward, was sent out to 

 investigate the nature of the disease, which he did 

 with great thoroughness, but be failed to find a 



