
9 
Careful experimentation by Professor Garman in Kentucky and the 
experience of practical tobacco growers in Kentucky and South Caro- 
lina have shown that, properly used, no possible harm can result from 
the application of an arsenical poison. Summarizing from the prac- 
tical experience on record, it is the opinion of the writer that Paris 
green, in the proportion of 1 pound to 125 gallons of water, is the 
proper mixture to apply to tobacco plants. Used at this strength, it 
will not kill all of the flea-beetles, but it will greatly reduce their 
numbers. It will also be efficacious at this strength against the 
young caterpillars of the horn worm, or hornblower, and against sun- 

Fic. 5.—Southern tobacco worm (Protoparce carolina): a, adult moth; 6, full-grown larva; 
c, pupa—natural size (original), 
dry other tobacco insects, as will later he shown. In the dry state, it 
may be mixed with twenty parts of spoiled flour or any fine dust, 
such as road dust, and dusted on the plants from one of the machines 
known as powder guns, or from a coarse cloth bag or sack. 
After the available portions of the plants are cut in the fall, and 
the planter is ready to plow his fields to small grain or some other 
crop, there will be a positive advantage in treating the portions of 
the plants left in the field with a considerably stronger arsenical mix- 
ture. This, in the warm days of autumn, will kill the insects remain- 
ing in the fields, many of which would otherwise have successfully 
hibernated and put in an appearance ready for destructive work the 
10053—No. 120—06——2 
