Water in Trees, under Australian Conditions. 
99 
set of experiments were all of equal length, and as far as possible of equal 
diameter and similar shape. In each double series the first set, A, consists 
of branches taken directly from actively transpiring trees ; the second set, B, 
consists of branches saturated as far as possible with water. The branches 
were laid horizontally and eosin driven through under varying pressures, 
noting the time of flow in each case. 
I. Eucalyptus viminalis . 
Length of stem 50 cm. 
Heads in cm. of water. 
1. 12-5 cm. head) 
2. 25 cm. (i head) 
3. 37.5 cm. (| head) 
4. 50 cm. (1 head) 
5. 63 cm. (i| heads) 
6. 100 cm. (2 heads) 
A. 
Rate of flow per hour. 
36 cm. 
37 cm. 
42 cm. 
45 cm. 
46 cm. 
60 cm. (older branch) 
B, 
Heads in cm. of water* 
1. 12 5 cm. 
2. 25 cm. 
3. 37-s cm. 
4. 50 cm. 
5. 63 cm. 
6. 100 cm. 
Rate of flow per hour. 
38 cm. 
58 cm. 
66 cm. 
72 cm. 
112 cm. 
124 cm. 
Acacia mollissima . 
A. 
Length of stem 50 cm. Temp. 25 0 C. 
Heads in cm. of water. 
Rate of flow 
1. 12.5 cm. 
28 cm. 
2. 25 cm. 
39 cm. 
3. 37.5 cm. 
68 cm. 
4. 30 cm. 
80 cm. 
5. 63 cm. 
88 cm. 
6. 75 cm. 
99 cm. 
7. 100 cm. 
187 cm. 
B. 
Heads in cm. of water. Rate of flow per hour. 
1. 12.5 cm. 
32 cm. 
2. 25 cm. 
64 cm. 
3. 37.5 cm. 
118 cm. 
4. 50 cm. 
172 cm. 
5. 63 cm. 
375 cm. 
6. 75 cm. 
388 cm. 
7. 100 cm. 
460 cm. 
These results fluctuate considerably, but so also does the material, 
and it is quite useless by careful selection to obtain consistent results 
H 2 
