Crais—REGional, SPREAD OF MoIs?URE IN Woop or TREES. - 
cambium throughout was decidedly swollen and “‘bark’’ was easily 
separable. Growth had begun on two year old twigs where a 
row of spring vessels was fully formed. 
This tree was not a satisfactory specimen as it showed very 
slow diameter growth compared with neighbouring trees of the 
same age and subsequently in chipping up the cuts it was 
observed that the pith was discoloured all through the bole and 
well up into the crown and also that in the centre of the lower- 
most cut a small area of wood was discoloured. ‘The unexpected 
results obtained might have been due to this diseased condition 
and it was resolved to examine another tree which appeared quite 
healthy. 
2. ‘Tree felled entire on the morning of 7th May 1918, when 
practically all the buds were open but only a few leaves here and 
there were expanded, i.e. this tree was almost in the same con- 
dition as the April one as regards its buds. The results obtained 
confirmed those of the April tree. 
3- Tree felled entire on the morning of 14th May 1918 when 
the first leaves were all just fully expanded. 
4. Tree felled entire on the morning of 20th August 1918. 
These four trees represent two phases—distinct in the tree’s 
activities and very distinct in the results :— 
a. Bud opening and expanding phase as represented by the 
April and May trees. 
b. Full leaf condition as represented by the August tree. 
These two fall to be treated separately. 
a. April and May. 
As already indicated the results obtained from these trees were 
quite unexpected. Buds from the March tree opened three days* 
after felling. Yet owing to a prolonged cold spell I had to wait 
from 23rd March to 23rd April before a tree showing the opening 
bud condition was available. This interval was so long that 
results which I here refer to from the April tree as representing 
the bud-opening condition may in reality be the state of affairs 
in a tree with the buds just ready to burst, i.e. the moisture 
distribution as published for the March treet may not be the 
final stage in the closed bud condition. Further experiments 
alone can settle this point. But however that may be we can 
still discuss the March and April results as a closed-bud con- 
dition and the bud-opening condition respectively. 
The most striking result obtained from this series is the 
position in the lowermost cuts of the area of maximum moisture 
content in the case of the April and the first May trees (Plates 
CLXXXIIL-CLXXXIII). Here we find the moisture heaped up 
otes Roy. Bot. Gard. ge cob OD a a sea BP g (r918). 
| Notes Rey. Bot. * ssaeont oe ., xi. No. Lt. PA. CLIX (1918) . 
