212 INSECTS 
trol them if every one in the neighborhood would spray his 
potato vines with Paris green for the first week or two after 
they come up in the spring. If this is not done, the “ bugs ” 
soon become very numerous, for each female lays from 500 
to 1000 eggs, and there are from two to four broods a season. 
The eggs are deposited in clusters on the under side of the 
leaf of the newly started potato. They usually hatch in a 
few days into small brick-red grubs with black marks, and 
grow lighter in color as they increase in size. They devour 
the potato vines at a rapid rate and grow so fast that their 
skin becomes too small every four or five days, and they 
molt about five times during the three weeks that they take 
to complete the larval growth. Then they crawl into the 
ground and change to the pupa state. In ten or twelve 
days the adult is fully formed and comes forth to eat and to 
lay eggs for another generation. 
As both the adults and the larve eat the plants they may 
all be destroyed by applying Paris green or some other suit- 
able poison. 
The Cabbage Worm is the caterpillar of the cabbage butter- 
fly, our commonest white butterfly, which may be seen fly- 
ing about during the whole summer, and in the egg-laying 
season large numbers are sometimes found in the cabbage 
patch. The eggs are placed on the leaves of cabbage, cauli- 
flower, and nasturtiums. The dark green caterpillars eat 
ravenously and do much damage. The remedy in case of 
cabbages and nasturtiums is to spray them with Paris green. 
As the cabbage head grows from within and we reject the 
outer leaves, there is no danger that the poison may harm us. 
Cutworms cut off tender plants at the surface of the earth. 
They do this mischief at night, and whenever we see a plant 
in the morning thus destroyed we may usually find the cul- 
