LIME. 
Freshly air-slacked lime has also been recommended, and eight 
worms were thickly dusted with the powder to test its value. The 
next morning after the application of the lime, only one of the eight 
was found to be at all affected, and that was still alive. 
TAR-WATER. 
A spray of water that had stood for several days upon coal-tar 
was next thrown upon the worms, eight nearly full-grown and two 
about half-size. Three of these which were thoroughly drenched 
with the fluid, were fonnd dead after several hours, but none of the 
others were affected. 
From the preceding experiments we infer that none of the sub- 
stances tried were of any practical value except the pyrethrum and 
kerosene, and that these could be used with good effect in the field 
only early in the season, before the plants had formed a head, or 
while the worm was still small. As the butterflies lay their eggs 
continuously for several weeks, any application, to be entirely suc- 
cessful, must be several times repeated. 
