38 
their sweets tor a time by lamplight and then flew away to continue their usual 
vocation. This act of defiance sent consternation to the hearts of some 15 or 20 
planters who had been invited to attend the experiment and who during the day 
had insisted that if properly conducted, lights were effective agencies. All ad- 
mitted that the test had been made under the most auspicious circumstances and 
yielded their former position with commendable grace and sincerity. Their atten- 
tion was further called to a number of parasitic Hymenoptera which had been 
caught, some beneficial and predaceous beetles, soldier bugs, lace-wing flies, and 
many other species of little known economic importance such as have heretofore 
been given in detail and need not be repeated. 
To summarize briefly, it must be concluded that the use of lights for 
attracting and trapping the Boll Worm moth is entirely useless. The 
character and habits of the other insects caught, as shown by Table 
XIII and its discussion, are found to be pretty evenly divided between 
those which are beneficial and those considered injurious. Most of the 
insects noted as injurious are not of special economic importance 
throughout the cotton region, and hence their consideration in this 
connection may be justly omitted. The use of lights, so far as the cot- 
ton planter is concerned, results only in the destruction of beneficial 
insects and is, therefore, an absolute disadvantage. Such being the 
case money expended in this practice is an entire loss. As a protective 
agency lights are a failure and should be unhesitatingly discouraged 
and condemned. 
POISONED SWEETS. 
Much has been claimed for this method of destroying the moths and 
a number of experiments were made to test the value and importance 
of the remedy. The various mixtures were applied with a Woodasou 
liquid sprayer upon rows of cowpeas which had made a rank growth 
and were blooming profusely. They were freely visited by Heliothis 
from about 4 p. m. until 8 or at night. All conditions for the experi- 
ments were favorable and furnished a good test of the poisons. The 
experiments were made upon Mr. C. F. Mercer's farm at Arlington, 
Tex., where Dr. L. C. Page, of that city, also rendered valuable assist 
ance. By direction Dr. Page prepared saturated aqueous solutions of 
the poisons, and mixtures of desirable strengths with vinegar or beer 
were made subsequently. 
Experiment 1. 
August 27 (4:15). — Beer, 8 ounces; saturated cold-water solution of arsenic, 4 
ounces. 
August 28 (3 p. m.). — Leaves, blossoms, or young pods slightly or uncertainly in- 
jured. 
Experiment 2. 
August 27 (4:25). — Beer, 4 ounces, with 4 ounces of the same poison solution used 
in experiment 1. 
August 28 ( }). m.). — Foliage, blossoms, and very young pods badly scorched. 
