aay 
Special attention was given this year to reducing the amount of 
arsenic applied for weevil control by early season "mopping" with 
nolasses-calcium arsenate end water (1 - 1- 1) mixture, and by dilut- 
ing the calcium arsenate with hydrated line. Reduction of the amount 
of arsenic used is important on certain types of sandy loam in this 
section where excéssive amounts of arsenic cause soil injury. Lime 
also has a beneficial effect on certain soils in preventing injury 
from arsenic and a tondency to reduce plant lice infestation. It will 
be noted that in some series of tests the gains from poisoning are 
not very consistent. This was directly due to a difference in sever— 
ity of weevil damage, soil type, and amount of fertilizer used, Rel-— 
atively few applications of dusts were made because of the low early 
infestation of squares and the carly maturity of the crop. In compil- 
ing the cost oe profit per acre,: the, following figures were used: 
Calciwa arsenate, 6 cents per pound; lime, 1 cent per pound; molasses 
(blackstrap), 14 cents per gallon; labor for dusting, 10 cents per 
hour; lebor for molasses-nixsure applications, / cents per hour}; 
cotton valued at 9 cents per pound and seed at $10 per ton. The 
vrofits from poisoning for 1934 are lower than the 5-year average, 
owing to the decrease in the emount of fertilizer used and the low 
weevil damage. The outstanding points in this season's control work 
are the possibility of using lime with calcium arsenate as a dust and 
the combination use of the early liquid poison followed by dusts 
later in the season. 
~~ 
INSECTS ATFECTING MAN AND ANIMALS 
C. W. A. work in control of pest mosquitoes and ticks.--At the 
end of January approximately 21,200 men were employed on the Civil 
Works Administration mosquito control pro ject in 32 States and. the- 
District of Columbia. To facilitate the intelligent direction of, 
the work 4 New Jersey men familiar with the methods found to be ef-. 
fective in that State have been appoirtec to aid in general super-— 
vision of the field work. .They are, Lester W. Smith, R. J. Van Der— 
werker, William Thom, and Morgan Hand. In addition, Norman G. Platts; 
in charge of Mosquito Control Worl in Indian River County, Fla., has 
been added to the temporary supervising force. Also the following 
members of the permanent staff have been active in the work: W. V. 
King, D..G. Hall, J. B. Hull, and EB. C. Cushing. ‘The latter Hageaees 
ssigned to the Washington office for the purpose of assisting in di- 
gesting and collating field reports. 
The tick control work is more or less experimental in nature 
and is conducted on a much smaller scale than the mosquito work, 3/0 
men having been employed in Maryland, Delaware, Virginia, and the 
