32 
with the cold moist earth soouer or later may cause its death. From 
this fact and the long continuous rainy season of the winter here it 
seems probable that great numbers of the pupa? will be destroyed if 
the soil be plowed late in December, so as to allow the loose earth to 
become well drenched by the almost continuous January rains. Sub- 
sequent rains will keep it quite wet, often perhaps, to excess. The 
papal cells having been broken up, the wet earth directly affects the 
wellbeing of the pupa?. Even though the exposure to moisture alone 
should not prove entirely efficient, a light frost or the sudden cold 
wave changes of the atmosphere would greatly aid in the work of 
destruction. Certain it is, that a heavy frost occurring when the pupa? 
are in such condition would destroy all thus exposed. For this reason 
if the soil could be plowed in November so that the first black frost 
of the winter season could be utilized in killing exposed pupae, great 
benefit would certainly be derived. 
CORN AS PKOTECTlOZs TO COTTON. 
Cornfields planted in July or August were always found to be badly 
infested with worms. Especially was this the case where the fields 
were small and near cotton fields. At the same time corn fields no 
larger but greater distances away from cotton fields were less infested 
and the cotton more so. As has previously been noted, this is explained 
by the fact that the moths feed mostly on cotton at night, but leave it 
to deposit on corn if found suitable and near by. Even late spring 
planting was found suitable for deposition in August, though maturing 
rapidly and having nearly grown worms in the ears. Especially sug- 
gestive .were the observations made in cotton fields where a poor stand 
had been obtained and where corn had been planted in the u skips." 
In all cases the moths deposited freely upon the corn, though it was 
fast reaching maturity. Several of these cotton fields were carefully ex- 
amined. The most extended search for worms revealed very few in- 
deed, and the only possible conclusion to be arrived at was on the 
whole that the damage to the cotton was not so great as in those fields 
without the corn distributed through them. It is therefore evident that 
by the proper management of the planting of corn the latter could be 
made to answer as a great protection to the cotton against Boll Worm 
ravages. This management must consist in arranging the crops on the 
plantation so that green corn suitable for egg deposition shall be kept 
near or in the cotton fields in range of the moths. 
It must be stated, however, that the corn, which is intended to act as 
a trap for the deposition of the eggs, and hence of the worms as soon 
as hatched, must be planted with a view of being cut as fodder as soon 
as a sufficient number of worms are found in the plants and before the 
worms begin maturing. From this it follows that the corn, which is to 
be allowed to mature and produce corn must be planted further away 
from the cotton fields in order that it may become infested as little as 
