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MARCH, 1917 
EDITORIAL 
VOL. XXVII No. 1 
Another Imported Tree Disease 
The poplars of the country are now threatened by a dan- 
gerous fungous disease which has evidently been imported 
in recent years from Europe. This disease attacks the 
twigs, limbs and trunks of the black and Lombardy poplars 
(Populus nigra) and of the Carolina poplars or cottonwoods 
(Popuhis deitoides) , and may be expected to attack other 
species of poplars and cottonwoods in regions not yet in- 
vestigated, according to the plant pathologists of the United 
States Department of Agriculture. 
The disease is caused by the fungus Dothichiza populea. 
It occurs first in the form of cankers or depressed dead 
areas in the bark much in the same manner as in case of the 
blight of chestnut trees, which is caused by a distinctly 
different fungus. The effect of the fungus on poplar and 
cottonwood trees is as follows : Cankers are formed at the 
point of attack, spread rapidly and often girdle the twig, 
limb or trunk at the point of attack, killing the part above 
the canker. Trees attacked on the trunk become “spike 
topped.” The death of limbs and twigs gives the trees a 
ragged appearance, which spoils their beauty and later kills 
them. This is especially the case with black poplars which 
are frequently planted in rows along boulevards and avenues. 
The European poplar-canker is most severe in its effect on 
stored and transplanted nursery stock. Trees when in tran- 
sit, and when heeled in the ground, or freshly transplanted in 
the spring, are readily attacked by the fungus and ruined 
within a very short period of time. This disease is spread by 
means of spores produced in fruiting bodies in the form of 
small pimples or pustules in the bark of the cankers. Erom 
these pustules in springtime there are exuded small, sticky, 
cream-colored tendrils which soon change to a tawny-olive 
or even a walnut-brown. These tendrils contain millions of 
spores which spread the disease in various ways. 
During the past year the pathologists of the department 
found the disease prevalent in small areas in certain dis- 
tricts in the following states: New Hampshire, Massachu- 
setts, Rhode Island, Connecticut, New Jersey, Pennsylvania, 
Delaware, Maryland, Ohio, Nebraska and New Mexico. The 
centers of infections appear to be in every case either certain 
nurseries now known to contain diseased trees, or points 
where poplars received from such nurseries have been 
planted. Owners of diseased poplar or cottonwood trees may 
greatly assist if they will notify the Bureau of Plant Indus- 
try, United States Department of Agriculture. 
Editorial Notes 
During the fiscal year 1916, 705,872 acres of national forest 
timber lands were estimated and mapped intensively, and 
1.093,006 extensively. In all, 20,815,798 acres have been 
mapped by intensive methods and 47,291,660 by extensive 
methods. The work of classifying and opening to home- 
stead entry such lands in the national forests as are chiefly 
valuable for agriculture is progressing rapidly. Already over 
seventy million acres have been covered by field examinations 
and the final reports acted upon. 
For many years forest fires have swept over portions of 
Long Island, burning grass, small trees and often destroying 
the forest over considerable areas. Prof. Russell T. Gheen, 
of the State College of Forestry, through co-operation with 
T. M. Avery, manager of the Nassau County Farm Bureau, 
and several large estate owners of Nassau and surrounding 
counties, has just brought about the formation of the Broad 
Hollow Forest Protective Association, which is the first fire- 
protective association to be formed in the state. The follow- 
ing officers were elected: President, Beekman Winthrop, of 
the banking firm of Robt. Winthrop & Co., New York City; 
vice-president, Ralph Ellis ; secreary-treasurer, Edward Mor- 
gan, of J. P. Morgan & Co. Lynn Ayers, the manager of 
Mr. Morgan’s estate, was elected chief fire warden. The 
Fire Protective Association of Long Island will carry on an 
educational campaign with the idea of working up sentiment 
for the protection of woodlands throughout the island, the 
thought being that eventually there should be a fire protective 
association covering the entire island. 
Acting under the authority of a special act of Con- 
gress approved September 8, 1916, the President has, on 
recommendation of the Secretary of Agriculture, signed 
a proclamation adding approximately 50,000 acres to the 
Whitman National Forest, Oregon. The lands involved 
are situated on the divide between the John Day, Powder, 
and Burnt rivers, in east-central Oregon. Over 4,000 
acres consist of timber lands which were included in 
patented entries. As the result of suits brought by the 
United States, the patents for these entries were canceled 
by the courts because they were acquired through fraud or 
mistake, and the lands were returned to government 
ownership. The canceled claims carry a total estimated 
stand of nearly 46,000,000 feet B. M. of timber. 
The Secretary of Agriculture has authorized the loca- 
tion survey of a section of the first project in road con- 
struction submitted under the “National Forest section” 
of the Federal Aid Road Act. This section is the only 
one in the law which provides for actual construction of 
roads by the federal government. Roads built under au- 
thority of this part of the law are designed primarily to 
promote economic development and to serve public con- 
venience in localities where much of the land is in 
national forests. The proposed road on which action is 
taken is in the Apache National Forest, Greenlee County, 
Arizona. The preliminary estimate of the cost of con- 
struction of the seventy-one miles of road to be surveyed 
is $342,500. Greenlee County proposes to hold a bond 
election to raise the necessary funds to contribute fifty 
per cent of this amount. An additional twenty-nine miles 
of road in Apache County will be necessary to complete 
the project, and, according to the preliminary estimate, 
will bring the total cost to $420,000. 
