a 
230 Report of tHe BoraANICAL DEPARTMENT OF THE 
A row of young sweet cherry trees showed, when examined in 
March, various degrees of discoloration of the bark and wood 
according to the altitude. All of the trees were alive in Septem- 
ber, and had an abundance of good foliage, had made some new 
growth and the wounds made in the trunk in the examinations in 
March had‘ all grown over. 
An orchard of Japan plums was examined in March and to 
every indication the trees were dead, but they ripened a fair crop 
of fruit, and when examined in September a thick layer of new 
wood and bark had covered the old discolored layer. In one tree 
the new wood was 8 millimetres thick and the bark 4 millimetres 
thick. 
In all of the vineyards where vines had been killed to the snow 
‘line there was a very vigorous growth of shoots that started out 
from below this point. Usually there were four to ten of these 
shoots and many of them made a growth of fifteen feet. 
TREATMENT OF INJURED TREES. 
During the spring there was much demand for information as 
to the best way to prune injured trees so as to induce most 
rapid recovery. All manners of ways were advised, as cutting 
the young trees off below the snow line, cutting the old trees 
back to the large limbs or “‘ dehorning,” a moderate pruning and 
to do nothing at all. 
As obtainable information upon this point was unsatisfactory, 
and not based upon actual experiments it was decided to make 
some experiments, to be supplemented by observations, with the 
hope of being able to gain some knowledge that wou!d be useful 
in the future. 
Upon the fruit farm previously referred to, a number of old 
peach trees in different orchards were cut back to where the limbs 
were about an inch and a half to two inches in diameter. ‘This 
was done early in April. Adjacent trees, injured to the same 
degree, were marked and left unpruned and others pruned for 
comparison. : 
When an examination was made about the middle of June a 
few of these “ dehorned ” trees were putting out some vigorous 
shoots from the limbs, and the indications were that they would 
make a good recovery. 
