37° CONNECTICUT EXPERIMENT STATION REPORT, Igi2. 
the disease at that time. They were examined again and 
re-marked at the end of that season, and examinations were 
made again at the end of the seasons in I9II and 1912. In 
these later examinations data were not taken from all of the 
marked trees, but the condition of each tree examined was 
compared with its condition in the fall of I910. The badly 
diseased and dead trees increased from 5.7 per cent. in the spring 
to 35 per cent. in the fall of 1910, to 58 per cent. in I9II, and 
to 69 per cent. in 1912. The following table shows the conditions 
at the different times of examination: 
Feb. 1910. Nov. I9t0, Fall, r9r0. Fall, torr. Fall, 1910. Fall 
Nog No. Zo lo.’ No.’ % No.’ ¢ No.’ 
Not diseased...... 67 42.7 Co) fo) 24 20.5 o Oo I2 21.8 (o} 
Little diseased..... 67 42.7 68 43.3 || 40 34.2 25 21.4 || 25 45-5 8 
Medium diseased.. 14 8.9 34 21.7 || 22 18.8 24 20.5 g 16.4 9 
Badly diseased.... 9 5-7 55 35.0 |/ 31 26.5 44 37.6 9 16.4 21 
Dead ts veaavessencave ee) fe) fo) o. (O0 24 20.5 oe) 17 
Totals......... 157 157 117 117 55 55 
DISTRIBUTION AND HOSTS. 
In the United States. The blight, first noticed in the late 
summer of 1904 at Bronx Park, New York, was said by Merkel 
to have spread by the end of 1905 so that 98 per cent. of the 
trees in this borough were infected. Maurrill (45), in June, 
1906, reported the disease from New York, New Jersey, Mary- 
land and Virginia, and in September also from the, District of 
Columbia. In February, 1908, he (48) gave Connecticut and 
Massachusetts as additional states. Metcalf and Collins (36). 
showed the distribution by August, 1909, to include Rhode 
Island, Pennsylvania and Delaware. Except in the vicinity of 
New York City, including adjacent parts of New York, Con- 
necticut, Long Island and New Jersey, the points of infection 
at this time, so far as known, were scattered rather than 
general. In May, 1910, Metcalf and Collins (37) included 
West Virginia among the infected states. The past year the 
disease has been reported also from New Hampshire and 
Vermont. 
At the present time the most damage caused by this disease 
in Massachusetts and Connecticut has been along and west of 
the Connecticut river. In New York it is conspicuous along 
the Hudson River up to Albany, and in western Long Island. 
Ig12 
° 
14.5 
16.4 
38.2 
30.9 
