1919.] 
Maxwell.—Growth of Trees in New Zealand. 
375 
Table showing the Eate of Growth of New Zealand Indigenous Timber- 
trees (the Kauri being the most rapid Timber-producer, its Rate is 
taken) as compared with the Rate of Growth of Exotic Trees in 
New Zealand. 
(In each case the average number of years taken to grow 12 in. in diameter is given, except 
in the first column, in which the number of feet grown vertically in 12 years is given.) 
T. W. Adams, Green- 
dale (12 years Height- 
growth in Feet). 
Forestry Commission, 
1913 (Years taken 
to grow 12 in.). 
Rev. Simmonds. 
Pukekura Park, New 
Plymouth (E. Max¬ 
well). 
Mokoia, near Hawera 
(E. Maxwell). 
Marumarunui, Tara¬ 
naki (E. Maxwell) 
Forestry Report, 1909 
(Mr. Adams). 
Hill - dene, Tauranga 
(E. Maxwell). 
State Plantations, 
Rotorua (E. Max¬ 
well). 
Karaka. Auckland 
(E. Maxwell). 
General Average Num¬ 
ber of Years taken to 
grow 12 in. diameter. 
Kauri .. 
58-2* 
Pinus radiata 
, # 
9*4 
. • 
13-4 
12-8 
8-9 
11-6 
, . 
. , 
11-4 
11-1 
Cupressus macrocarpa 
. . 
10 
12 
15-5 
17-7 
c . 
. . 
. • 
. . 
13-6 
Gurus]* 
. . 
. . 
• . 
. . 
. . 
• • 
• • 
. . 
14-3 
Sequoia sempervirens 
(redwood) 
10 
• • 
13*99i 
• • 
13-21$ 
13-68 
13-61 
Wellingtonia gigantea 
23 
16*2 
167 
. . 
• • 
. . 
16-4 
Pinus Jeffreyana 
23 
• • 
. • 
• . 
16 
. . 
16 
P. Torreyana 
21 
• • 
. . 
. . 
17-3 
. • 
17-3 
P. Laricio .. 
21 
. . 
• . 
• . 
• • 
* , 
. . 
P. Benthami 
20 
• • 
. , 
. . 
. • 
• • 
o • 
P. ponderosa 
26 
18*1 
• • 
. • 
O a 
. • 
18-1 
P. Murrayana 
18 
19*5 
. . 
. . 
. . 
. . 
19-5 
P. austriaca 
20 
23 
• • 
. . 
• • 
. . 
23 
Oregon pine (Douglas 
28 
22*7 
. e 
o . 
• • 
. • 
22-7 
fir) 
Pinus sylvestris (Scots 
. . 
23-8 
. . 
• . 
• • 
23-8 
> pine) 
Cupressus Lawsonia . . 
0 • 
• • 
• • 
. , 
30-7 
30-7 
Japanese cedar 
. . 
e . 
24-9 
. • 
• • 
• . 
24-9 
Acacia melanoxylon 
• • 
. . 
33 
18 
. . 
• • 
25-2 
(blackwood) 
Oak 
• • 
21*8 
28-8 
. . 
• • 
• • 
25-3 
Elm 
• • 
21*7 
32 
• • 
, , 
• • 
26-8 
Larch 
26*4 
• • 
• • 
• • 
26-4 
*Mr. Cheeseman’s average. t Average of 34 species as per table G attached. J Trees 35 years old. 
