4 CRAIB—REGIONAL SPREAD OF MOISTURE IN Woop OF TREES. 
that whereas these diagrams represent the average state of the 
bole of the trees examined, the whole length of the bole is not 
necessarily at the same stage at any particular time, and in fact 
very seldom are even the quadrants of any one section in exactly 
the same phase at one time. 
Dates and Method of Felling Trees and of Cutting the Selected 
Transverse Sections.—The first tree was felled on the morning 
of 24th October 1917 when only a few half-withered leaves 
remained on the crown, 7.e. at the time when foliar activity had 
just ceased for the year and at the commencement of what is 
usually regarded as the tree-felling season. Preparatory to 
felling the top of the crown was taken off, as were also the main 
branches, the latter being sawn off at about 1 m. from the trunk. 
Immediately after felling the trunk was taken to a sawmill close 
by where the cuts selected were sawn off. 
The second tree was felled on 14th December 1917, in the 
afternoon. For convenience of felling some branches were cut 
off at about 1 m. from the trunk, but otherwise the tree was 
felled entire. Immediately after felling the bottom cut selected 
was sawn off. Next morning the remaining five selected cuts 
were sawn off, and the work of chipping up and weighing was 
completed on the following day. 
On the morning of 5th January ro18 the third tree was 
felled. In this case only one branch was removed preparatory 
to felling. Felling took place in the middle of the severe snow- 
storm then being experienced and during hard frost. Just 
after felling only the bottom selected cut was sawn off. After 
work was finished on this cut an examination of the tree showed 
that it was bleeding rather freely from the cut branch and from 
another near it which had been damaged in felling. On account 
of the bleeding I had all the remaining cuts sawn off, and these 
were stored in a cool place during the remaining two days neces- 
sary for the chipping up and weighing. As bleeding from cut 
branches has been mentioned, I may state that this was the only 
tree of the series on which bleeding from small or main branches 
was observed. 
The fourth selected tree was felled early on 4th February 
1918. The tree was felled quite entire, there being in this case 
no necessity to remove branches preparatory to felling. All 
the selected cuts were sawn off immediately after felling, and no 
branches were removed from the crown until it was necessary 
to do so for sawing operations. 
On 23rd March 1918 the fifth tree was felled quite entire in 
the morning. Immediately after felling all the selected cuts 
were sawn off, and the work of chipping up and weighing was 
proceeded with continuously till finished. 
