222 W. V. AGR. EXPERIMENT STATION [Bulletin 137 
practicable. In other portions it may be necessary to cut all 
chestnut trees both healthy and diseased, in a belt some miles 
wide along the line. The disease is left largely to itself in 
the area enclosed by this line while careful search is made for 
all diseased trees outside that area and they are destroyed 
when found. All chestnut timber in the generally diseased 
area should be cut and utilized as rapidly as possible but the 
disease will find itself checked upon reaching a boundry de- 
stitute of chestnut,—the same as a forest fire when it comes 
to a broad river. 
In the case of individual trees which are quite valuable it 
is often possible to prolong their lives or even to save them 
by careful tree surgety. Diseased twigs and small. limbs 
should be,removed. The larger limbs and trunk may be 
treated by carefully cutting away all diseased bark and into 
the healthy bark around the edges. A layer of wood should 
also be removed from beneath this bark and the entire wound 
painted over with coal tar. The tools used for removing bark 
and wood should be very sharp, so as to make clean, smooth 
cuts, and the work must be done with great care and thor- 
oughness, if good results are to be expected. 
LEGISLATION. 
The control of this disease is a matter which requires 
prompt action on the part of every state where it has been 
found. These states are all awakening to a realization of the 
danger from the Chestnut Bark Disease and Pennsylvania, 
Virginia, and New York have already taken steps to prevent 
its further spread. Pennsylvania was the first state to make a 
definite move along this line. Her legislature passed a bill 
carrying appropriations of $275,000. for use in investigating 
and controlling this specific disease. The full title of that act 
is as follows: 
“An act to provide efficient and practical means for the 
prevention, control and eradication of a disease affecting 
the chestnut trees, commonly called the chestnut tree blight ; 
