wan 
Mr. Parman also reports on tabanids (Tabanus rubescens Bellardi): 
"Collections of tabanid eggs have been made to obtain percentage of para- 
Sitism in several localities. There have been from 35 to 85 percent of 
the eggs collected from the Nueces and Frio Rivers parasitized during July 
and the first part of Augusi. Eggs collected on San Saba River near 
Menard on August 15 had 80 per cent parasitized, and eggs collected on the 
Llano River on August 16 had about 25 per cent parasitized." 
i The continued effectiveness of control of the screw worm fly by 
trapping in the vicinity of Dallas and Menard, Tex., as noted last nonth, 
is reported by E. W. Laake, as follows: "The total catch of all gpocies of 
blowflies taken in the trapped area from July 20 to August 29 amounted to 
1,546 quarts. * * * Qne hundred and eighty new screw worm (Cochliomyia 
macellaria Fab.) cases were recorded in the trapped area as compared with 
six hundred and fifty-seven in the nontrapped area. No other monthly 
period this season has shown such a marked difference in favor of the 
trapped area." 

STORED~PRODUCT INSECTS 
The completion of one of the largest warehouse fumigaiions ever 
conducted in the United Staies is reported by W. D. Reed, Richmond, Va. 
whe fumigation involved the use of 10,500 pounds of liquid hydrocyanic 
acid and a total warehouse space of nearly 7,000,000 cubic feet, and was 
directed against the tobacco moth (Ephestia elutella Hbn.) and the tobac= 
co beetle (Lasioderma serricorne Fab.). It was arranged by two tobacco. 
companies and the Bureau of Entomology, the officials of the companies 
agreeing to furnish labor and materials for sealing the warehouses, and 
to pay a professional fumigator to apply the liquid hydrocyanic acid, and 
the Bureau officials to supervise all the work and to receive fuil coop- 
eration in testing the results. Mr. Reed says: "On August 1 we complet— 
ed the fumigation * * * During the period August 1 to 15 Messrs. Morrill, 
Livingstone, and Green made examinations of the test lots of insects 
from the fumigated warehouses. The tobacco moth larvae showed a greater 
resistance to HCN than the tovacco beetle larvae in these experiments.” 
A tabulation of percentages of kill shows that the mortality of larvae of 
the tobacco beetle was practically 100 per cent to a depth of Sinches in 
the hogsheads, while at a depth of 3 inches the mortality of the tobacco 
moth larvae ranged from 20 to 100 per cent, and at 6 inches from 20 to 80 
per cent. The dosage was 24 ounces HCN per 1,000 cubic feet, the period 
of exposure was 144 hours, the mean temperature 82° F., and ihe mean 
relative humidity 62.7 per cent. 
The effect of paradichlorobenzene upon the viability of certain 
seeds is reporced by George M. Ellington, Sligo, Md., who says: "Germi- 
nation tests of certain varicties of seeds, which have becn under con- 
Stant fumigation for approximaicly eight months, show a decided injury \& 
treated seeds. as compared to the untreated checks. Some of the varie- 
ties treated had failed to germinate when the last tests were made. 
