THE IMPORTED CABBAGE WEBWOEM. 39 
September 7 the plants in two seed beds and 495 older plants were 
sprayed. One seed bed contained plants from 1 to 3 inches in height, 
many of which were infested by small webworms. They had not en- 
tered the bud, but were working in folded leaves. 
The second bed contained larger plants ready to transplant and 
only slightly infested. The few larvae present were mostly in small 
folded leaves or occasionally in a bud. The 495 plants had been 
transplanted for some time and varied from small plants, which had 
made little growth, to a few which had just begun to head. In 
fully one-fifth of these plants the bud had been destroyed by web- 
worms, making the plants worthless. 
In this experiment the plants were simply wet from above. In 
the seed beds the entire upper surface of the plants was wet, but 
with the larger plants only the leaves at the center were reached. 
The mixture adhered very well. At the time of the application all 
the larvae were concealed in the folded leaves or buds. The weather 
was hot and clear. 
In the seed bed containing the small plants a few larvae were 
dead the following day (September 8). They were found clinging 
and exposed on the surface of the leaves. 
The plants sprayed in the second seed bed had been removed and 
transplanted. The infested ones were discarded, and as a result the 
effects of the treatment could not be determined. 
In the large plants the larvae were buried beyond the reach of the 
poison and none were killed. 
September 9 it was noted that a few additional larvae had died in 
the first seed bed. Some of the leaves were slightly burned by the 
arsenical. On the old plants no effect was apparent, either upon the 
larvae or upon the foliage. 
A heavy rain occurred September 10 which washed the poison 
from the plants^ and the experiment was closed on that date. 
As a result of this treatment only a moderate number of larvae, 
in the folded leaves on the young plants, were killed. With the 
large plants no larvae w r ere killed. All things considered this ex- 
periment must be rated as a failure. 
Experiment No. 2. — Paris green, 5 pounds; lime, 5 pounds; and 
whale-oil soap, 10 pounds, in 100 gallons of water. 
September 12 a seed bed of small, well-infested plants was sprayed. 
The larvae were practically all in folded leaves and only one was 
found entering the bud. The spray mixture adhered perfectly and 
the surface of the leaves was thoroughly coated with the poison. The 
weather was cloudy and sultry. 
A shower occurred the following day, but the poison was not 
washed from the leaves. No dead larvae could be found at this time. 
Some of the leaves were slightly burned. 
