Mercave: Tar Cuestxur BARK DIstasr le 
FINAL STAGE OF THE DISEASE. 
The entire tree finally succumbs, often within two or three years after the first infection, 
The wood is not materially injured for timber purposes, but great care must be used in 
disposing of it, that the spores are not carried into new regions and set free on trees 
which have not previously been attacked. 
followed by astruggle between the fungus 
and the sprouts from the roots of the 
killed trees. In this struggle the marvel- 
ous regenerative power of the chestnut 
may enable it finally to overcome its 
subtle antagonist, but so far little hope 
of this can be held out from observation. 
Hundreds of chestnut trees have been 
under the writer’s close observation 
since 1907, and although some have 
produced a new crop of sprouts cach 
year since that time, the sprouts have 
rarely passed their second year without 
becoming diseased, or their third year 
without being girdled. North of the 
Potomac River the main problem now 
is how to dispose most profitably of the 
timber of the dead and dying trees. In 
Southern New England the proposition 
has already been made on distinguished 
authority, to replace the disappearing 
(Figure. 5 ) 
chestnut stand as rapidly as possible 
with white pine. 
As has been indicated, diseased 
chestnut nursery stock has been the 
most important factor in the spread 
of the bark disease. On account of the 
well-grounded fear of this disease much 
less chestnut nursery stock is being 
moved now than formerly, but there is 
stil enough to constitute a serious 
source of danger. It is therefore obvi- 
ous that every State in which the chest- 
nut grows, either naturally or under 
cultivation, should as speedily as pos- 
sible pass a law putting the chestnut 
bark disease on the same footing as 
other pernicious diseases and insect 
pests, such as peach yellows and the 
San Jose scale, against which quaran- 
tine measures are now taken. Many 
inspectors already have the legal power 
