42 
FETCH. 
lower parts of the stems, sometimes to a height of 25 feet, were 
covered with small red-brown patches. The liquid had issued 
from the cracks and had dried round them ; it had not run 
down the stem, as in the case of a severe lightning stroke. 
The cortex under each patch was slightly decayed and brown, 
but it afterwards dried up. Four trees were marked above 
the highest red-brown patch. On three of these the bleeding 
had not extended further up the stem by March, 1909, but on 
the fourth there were fresh spots higher up the stem at the 
end of July, 1908. As a rule, on trees which have been injured 
by fire the bleeding occurs immediately afterwards, and the 
spots do not subsequently increase in number or size. Only 
the cortex is affected, and the amount of sap which exudes 
is small. But when trees are severely struck by lightning, 
the exuding sap is derived from the whole of the inner tissues, 
and issues in such quantity that it runs down the stem in 
long streaks. 
