The Boll-Weevil Problem. 17 
If your farming organization is such that you feel as- 
sured that the poison applications will be made at the right 
time and in the right manner; and 
If you are willing to spend the full amount necessary to 
provide an adequate supply of dusting machinery and 
poison. 
You should not poison if the cost of the calcium arsenate, 
the cost of the labor to apply it, and the depreciation on 
the dusting machines will total more per acre than the cur= 
rent value of 100 pounds of seed cotton. 
Hand guns should be figured as depreciating 1oo per cent 
in a season and the larger machines about 25 per cent. 
The next extremely important question is that of the dusting ma- 
chinery which should be used. Extensive experience has shown that 
it is impossible to get satisfactory results by using makeshift de- 
vices to apply the poison, and the only safe procedure is to provide 
an ample supply of the specialized dusting machinery which is now 
on the market for the treatment of cotton for the control of the boll 
weevil. Machines of various types, prices, and capacities are now 
being manufactured which meet the requirements and circumstances 
of almost all classes of growers. The following is a brief descrip- 
tion of the several types and their uses: 
The hand gun is the smallest type of cotton-dusting machine, and, 
as the name implies, must be carried and operated by the laborer. 
These machines are generally quite unsatisfactory, owing to their 
necessarily frail construction and laboriousness of operation. The 
selling price ranges from $12 to $25 each. They should be used only 
when no other machine is suitable. Not more than 8 acres should be 
allotted to one hand gun, and it has generally been found inadvisable 
to attempt the treatment of more than 25 acres of cotton in one or- 
ganization with hand guns. 
The one-mule machine is the smallest of the traction type of dusters. 
It is a one-wheel, one-mule machine which the operator handles as 
he would a walking cultivator or any other walking implement. The 
machine has two nozzles and will treat either two or three rows of 
cotton at a trip, thus covering from 15 to 20 acres of cotton in a night 
of operation. It should be allotted not more than 60 acres of cotton 
for treatment throughout a season. This machine is now selling at 
from $100 to $125. 
The cart machine is a two-wheel, two-mule machine which straddles 
a row of cotton. It has three nozzles and will cover from 25 to 30 
acres of cotton in a night of operation. It should be allotted not 
more than 100 acres of cotton for treatment through the season, and is 
