NEMATODE DISEASE OF WHEAT. O 
swerecl. In this connection it is of interest to note that a careful 
examination by the writer of a considerable collection of native 
emmer, or so-called "wild wheat" (Triticum dicoccoides) , from 
Palestine failed to reveal the disease. 
Within the United States the disease was first found in 1909 at 
Modesto, Calif., and Old Fields, W. Va. During the same year it was 
reported from New York and Georgia. As a result of cordial coopera- 
tion by the Plant Disease Survey of the Bureau of Plant Industry 
and the Office of Grain Standardization of the United States Depart- 
ment of Agriculture and by pathologists and other agricultural 
agents of various States, the writer has recently examined specimens 
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Fig. 1. — Outline map of the United States, showing the distribution of the wheat 
nematode. The dots represent the States where it was found during 1918, while 
the crosses indicate the localities in which the disease was reported in 1909. 
from Red Bluff, Calif., from two counties each in West Virginia and 
Maryland, from one county in Georgia, and from a large number of 
widely separated places in Virginia. Distribution of the trouble in 
this country is graphically shown in figure 1. Whether the malady 
occurs only on the east and west coasts and not in the great wheat- 
growing States of the Middle West is not now known. It may be 
possible that the trouble exists in the Central States to a limited ex- 
tent and has been merely overlooked or mistaken for stinking smut 
or other troubles, or it may not occur there as yet. As the disease ap- 
parently is not endemic in the United States, nor especially wide- 
spread as yet, every effort should be made not only to prevent its fur- 
ther importation into and spread within this country, but it should 
be eradicated as far as possible from localities already infested. 
