1929] 
SERVICE AND REGULATORY ANNOUNCEMENTS 
57 
Of the 44,018 vehicles inspected during the period from January 1 to June 30. 
1929, 6,911 were found to be carrying host fruit. The fruit in 2.123 passenger 
cars and 2 trucks proved to be uncertified and was not permitted to proceed. 
JAPANESE-BEETLE CONTROL 
TRAPPING ADULT BEETLES 
One of the new features of the Japanese-beetle-control project this season 
has been the utilization of geraniol traps at the isolated points of infestation of 
1928, with the purpose of greatly reducing, or possibly, as to some points, eradi- 
cating the insect by this means. 
Such trapping is particularly useful if started promptly with the first emer- 
gence of the beetles, namely, before they have begun to lay eggs in the soil. 
The geraniol used is a powerful attractant for the Japanese beetle and is in a 
large degree selective in that it does not attract other insects. In isolated areas 
the traps can be used without running the risk of attracting beetles from sur- 
rounding territory and the total number caught in the traps represented so much 
gain in beetle reduction and prevention of local multiplication and spread. 
Some 15,000 such traps were purchased during the spring of 1929 and arrange- 
ments were made during the latter part of May for their distribution, baiting. 
and tending. At the close of the fiscal year traps were in operation at the sites 
of last year's infestations at Alexandria, Va. ; Washington. D. C. : Baltimore, 
Hagerstown, Frederick, Cambridge. Delmar, Chesapeake City. Elkton, Perry- 
ville. and Perry Point, Md. ; Gettysburg. York. Lewistown. and Sayre. Pa. ; 
Delmar, Del. ; Springfield and Boston, Mass. ; and Hartford and New London, 
Conn. Japanese beetles had been trapped in all these localities except Fred- 
erick, Md., and Sayre, Pa., by the middle of July, 1929. Necessarily the work 
of this season is experimental, and the reduction of future Japanese-beetle 
population at these points will be in direct proportion to the efficiency of the 
method. 
SOIL TREATMENT AND SPRAYING 
Control measures employed at isolated points of infestation, in addition to 
trapping and collecting the adult beetles, included soil treatment for the de- 
struction of the larvae, and spraying all foliage in the vicinity of the infesta- 
tion with arsenate of lead coated with lead oleate, a form of arsenical especially 
valuable for the destruction of this insect. 
As will be seen from Table 7, carbon disulphide was used for the treatment 
of about 53 acres of soil (2.327,533 square feet), and lead arsenate was em- 
ployed on about 3% acres (153.500 square feet). In Maryland, spraying opera- 
tions were carried out at Cambridge. Delmar, and Chesapeake City. 
Table 7. — Outline of soil treatment and spraying operations to control the 
Japanese beetle at isolated points of infestation, fixcal year 1929 
SOIL AND TURF TREATMENT 
Place 
Area 
CSi used 
Cost« 
Work 
begun 
Work 
ended 
Cambridge, Md 
Square feet 
549,000 
680, 133 
108,000 
619,200 
49,600 
187,200 
27, 300 
107,200 
Gallons 
1.030 
1,269 
250 
1,375 
125 
500 
61 
240 
Dollars 
2, 556. 30 
8,18 
1, 437. 73 
203.42 
564.32 
Oct. 22 
Nov. 8 
Apr. 89 
Apr. 4 
Apr. 30 
Apr. 13 
Juno 7 
Ma> 31 
Nov. 7 
Delmar, Md. (fall) 
Delmar, Md. (spring) 
Delmar, Del 
Milford, Del 
8pringfield .Mass. 1 
New London, Conn 
Hartford, Conn 
Deo, B 
Apr. 30 
May 4 
M:i> | 
Apr. 27 
June 8 
June 6 
Total 
2, 327, 533 
4,850 
11.717.74 

1 This cost was all borne by the States concerned except $531.47, which was expended by the Federal Gov- 
ernment in Connecticut and Massachusetts. 
1 Additional work included the treatment of 153,500 square feet of soil at Springfield. Mass 
of lead, at a total cost of $423.44. 
80297—30 2 
rith arsenate 
