Zl 
ported in the summer of 1933 by Dr. O. N. Liming, of the United 
States Department of Agriculture, in charge of the disease eradica- 
tion campaign then under way in Northern New Jersey, where the 
disease had earlier appeared. Several thousand infected trees have 
been detected and destroyed in Northern New Jersey, Long Island, 
and Staten Island. 
The major work of eradication lies within an area of 50 miles 
radius of New York City, including portions of three states and 
about 447 villages and cities. The work of eradication is being 
carried on cooperatively by federal, state, county, and municipal 
officials,, CCC men, Works Progress Administration, and others. 
It has been stated by Dr. R. P. White, of the New Jersey Agri- 
cultural Experiment Station, that there are in this area “at least 
25,000,000 elms, 50 per cent of which are small seedlings, brush 
Half of the remainder are elms stand- 
or swamp elms of no value. 
value only. ‘There are left 
ing in woods and fields with timber 
about 6,000,000 elms over 15 feet high, many of which are mag- 
nificent specimens 80 to 100 feet high, which are shade or orna- 
mental trees. The value of these trees to real estate alone is a 
staggering figure.* All this is within 50 miles of New York City.” 
There is no known “cure” for the disease. Spraying is in- 
effective, as it is in the case of the chestnut blight. The only 
known way to eradicate the disease is to destroy all infected trees— 
a disturbing and discouraging fact when we reflect on the com- 
mercial and aesthetic importance of the American elm in this coun- 
try. In fact, the American elm appears to be one of the most 
susceptible of all the species, and all American species of elm are 
susceptible. The Asiatic Elm (Ulimus pumila) and the Chinese 
Elm (Ubnus parvifolia) appear to be highly resistant. 
Our infected tree was cut down on June 28. It was located just 
west of the Hills Boulder Bridge. We have not only lost a beauti- 
ful and somewhat unusual tree, but the landscape effect of that 
part of the Garden has been marred. The tree was cut down by 
our own men in the presence of Mr. R. A. Emmons and a group 
of 18 tree scouts from the United States Department of Agricul- 
* An ingenious method of estimating the monetary value of a Bs ee in re- 
lation to surrounding real estate has been worked out by Dr. be belt 
eee New York State Entomologist) and is published in Fie Shade 
2-4. Jan. 1936. 
