XIV, 5 Yates: Groivth of Hevea Brasiliensis 519 
Table XIII . — Growth of trees in the Singapore Botanic Gardens." 
[Age of trees, 14 years.] 
Registered No. of tree. 
Girth in- 
Remarks. 
1904 
1905 
1906 
1907 
1908 
1272 
97.8 
102.9 
108.5 
113.6 
121.9 
Slope. 
1273..- 
78.7 
81.3 
88.3 
93.3 
96.5 
Do. 
1275 
60.9 
62.2 
66.0 
68.6 
71.1 
Do. 
1276 
136.5 
147.0 
147.3 
151.1 
152.4 
Top of hill. 
1277 
153.7 
159.7 
166.1 
174.0 
182.9 
Top of hill, 100 feet tall. 
1278. 
86.4 
88.9 
90.6 
93.7 
96.6 
Slope. 
1279 
87.0 
92.7 
96.5 
101.6 
104.1 
Do. 
12S0.' 
85.1 
93.7 
105.1 
106.1 
108.0 
Do. 
1281 
158.4 
173.0 
181.3 
191.8 
200.7 
Top of hill. 
■> From Agr. Bull. Straits & F. M. S. 7 (1908 ) 264. 
The record extends over a period of four years and indicates 
an average growth during this period of 5.3 centimeters per 
year. The most rapidly growing tree, No. 1281, shows a growth 
of 10.5 centimeters per year, almost double that of the average. 
In Table XIV are given measurements of trees up to 3 years 
old. The best growth indicated for that period is 23.9 centi- 
meters, which is slightly less than that attained by trees of the 
same age at Basilan, 
Table XIV. — Open-planting experiments. Planted 7.5 by S.75 meters (25 by 
12.5 feet )." 
Seeds sov/n at stake, 1907. 
Stumps 2 months from 
nursery. 
Stumps 6 months from 
nursery. 
Seeds sov/n in nursery, 
ber, 1907. 
Octo- 
Seeds sown in nursery, 
ber, 1907. 
Octo- 
cm. 
in. 
cm. 
in. ' 
cm. 
in. 
October, 1907.. _ 
plant* 
plant- 
December, 1907.. 
plant- 
plant- 
April, 1908- 
2.4 
u 
ed. 
ed. 
ed. 
ed. 
October, 1908... 
8.1 
December, 1908.. 
6.5 
2rs 
April, 1909 
7.9 
October, 1909 
16.1 
December, 1909.. 
14.2 
5? 
1 April, 1910--- .. 
23.0 
9A 
October, 1910 
23.6 
Ofo 
December, 1910.. 
23.9 
9| 
” From Report of Director of Agriculture F. M. S. in Agr. Bull. Straits & F. M. S. 10 (1911) 
256-256. 
Other records from Malaya indicate in some cases more rapid 
growth than those cited. In measurements of certain trees 
on the Bukit Kaja Estate in Selangor ® in which five trees (Nos. 
1, 3, 6, 7, 8) , all approximately 4 years of age, attained an 
’Agr. Bull. Straits & F. M. S. 1 (1902) 333. 
