600 BULLETIN 347 
“From the beginning, a more or less definite division has been main- 
tained between the slightly infected western portion of the State and the 
badly infected eastern portion, these divisions being called the Western 
and Eastern Districts, respectively. In the two districts quite different 
restrictions are maintained with respect to the method of procedure in 
handling diseased trees. The line of demarcation between these districts, 
as at present understood, is the eastern boundary lines of Fulton, Hun- 
tingdon, Mifflin, Center, Clinton, Lycoming, Sullivan, and Bradford 
Counties. . . . The field work [page 21] west of the advance line 
has for its object primarily the total eradication of the blight, and the 
checking of further westward spread. East of the advance line where 
the bulk of the chestnut trees is located, it is the duty of the Commission 
to acquaint owners of timber with the facts relating to the blight. 
at least in time to cut out the diseased trees before they deteriorate in 
commercial value. . . . In each district a district superintendent 
has been appointed to direct the field work. . . . The western district 
was subdivided into seven divisions of five to seven counties each, and five 
divisions were made in the eastern district. Each division has been in 
charge of a Superv sor. A field agent was detailed to conduct the work in 
a county and as many scouts as necessary were assigned him as assist- 
ants. . . . When the examination [page 23] of each tract was 
completed a data card, giving all the necessary information relative to 
the tract, was sent to Field Headquarters . . . The plan [page 2s] 
now being followed when a spot infection is found is to blaze the infected 
trees at breast height and also at the base . . . and the infected trees 
numbered consecutively. . . . The points [pages 26-27] to be 
emphasized in eradicating spot infections are: 
“1, Take all possible care to prevent injuries to surrounding chest- 
nut trees and sprouts in felling the infected tree. If it is necessary to 
clear away brush to facilitate cleaning up after felling, any small chestnut 
sprouts should be cut flush with the ground. Experience has shown 
‘that such stubs often become infected if near a diseased tree. 
“2. Cut all stumps as low as possible, to lessen expense of peeling and 
to save merchantable timber in the log. 
“3. Destroy all diseased portions of the tree showing pustules, by 
burning on the spot, immediately, either the bark or entire sections of the 
tree which show cankerous areas. 
“4. Either utilize all unbarked portions of infected trees within a 
brief time after they are cut, or, if it is desired to permit this material to 
remain in the vicinity of healthy chestnut trees, peel the bark from all 
portions of the trees which it is desired to retain. 
‘5. In every case peel the bark clean from the stumps to an inch or 
