CEYLON 147 



The First Plantation is from the original seed pro- 

 cured by Mr. Wickham from the Amazon in 1876. 

 The plants reached Ceylon towards the end of that 

 year, and were planted at Henaratgoda in 1877; this 

 plantation is therefore thirty-six years old. It contains 

 forty trees planted irregularly; the inside trees con- 

 gested and small in circumference, the outside trees 

 large. 



The Second Plantation was planted about ten years 

 later that is to say, in about 1886 with seed from the 

 original trees; it is therefore of the second generation. 

 It contains 211 trees planted 12 feet by 12 feet. The 

 contrast between the size of the outside trees and that 

 of the inside is also very marked. 



In the Riverside Plantation, also of the second genera- 

 tion, there are eighty-one trees scattered about, the trees 

 being larger than those of the second. The outside trees 

 also show a superiority of growth over their companions. 

 In October last it was decided to place the outside 

 trees of the three plantations under systematic tapping, 

 with the object of ascertaining (i) whether any other 

 trees besides No. 2 were good yielders ; (2) the effect of 

 room on the yield of Hevea trees. 



Table I. brings out very strikingly the effect of room 

 on the girth of Hevea. The average girth i yard 

 from the ground of the ten trees in the outside row in 

 the Second Plantation is 76 inches ; that of the trees in 

 the row next inside 44 inches. The trees are tabulated 

 as they grow; for example, No. 220, with a girth of 

 32 inches, is next to No. 221, with a girth of nof inches. 

 The famous No. 2, measuring 117^ inches, is not the 

 largest tree, No. 39 (not in the table) being 10 inches 



