ENTOMOLOGY AND I'LANT QUARANTINE 
15 
road stations on the Maryland-Virginia State line. The extension of the 
regulated area to parts of Ohio made it necessary to establish six new posts 
on as many highways in that State. Between April 18 and 30, 14 posts were 
established in Pennsylvania and West Virginia in addition to those in Ohio, 
most of them with one inspector each, operating 8 hours per day. This con- 
cluded the posting of the most important highways. 
When the seasonal restrictions on fruits and vegetables became operative 
on June 15, four additional stations were opened in Virginia. Inspection per- 
sonnel was increased during June and full quotas of men were assigned to 
the posts by June 30, 
At the end of the fiscal year there were in operation 32 road stations, 2 of 
which were on the Maryland-West Virginia State line, 6 in Ohio, 11 in Penn- 
sylvania, 9 in Virginia, and 4 in West Virginia. A maximum of 60 inspectors 
were engaged in road inspection during the spring season. 
Trucks returning empty to southern points after driving through sections 
in which beetles were swarming were again found to contain large numbers 
of living beetles. A total of 1.492 beetles were taken from 250 trucks. Finds 
ranging from 20 to 66 beetles were common. Seventy lots of infested plant 
material were intercepted at the posts, from which were taken 120 adults and 
56 grubs. 
Counts of all motor vehicles stopped for in.spection at the road stations dur- 
ing the year totaled 3,919,286. Uncertified quarantined products were found 
in 20,355 vehicles. 
CERTIFICATION AND TREATMENT OF NURSERY STOCK 
Continued beetle population build-up in the metropolitan area of New York 
City was again responsible for additions to the number of nurseries and green- 
houses found to be infested with the Japanese beetle. Few important com- 
mercial establishments in this area maintaining classified status under tlie quar- 
antine regulations remained uninfested by the time the nursery and green- 
house scouts were dismissed late in August. Observations by scouts engaged 
in the survey of classified premises showed that unfavoral)le environmental 
conditions during the winter of 1935-36 caused a heavy grub mortality in the 
older infested area. This resulted in a decided decrease this summer in the 
number of Japanese beetles present in the Philadelphia area. The water-front 
district was practically free from flying beetles, and they were also scarce in 
parks and public squares nearest the markets. This condition was noted in 
Camden and Philadelphia suburban areas. In Delaware, sections of south- 
western Pennsylvania, north-central New Jersey, and the metropolitan sec- 
tions of New York City there were heavy concentrations of beetles. Windrows 
of beetles that \u\d flown to sea and were washed back by the tides were again 
observed on the ocean beaches of northern New Jersey, Staten Island, and 
Long Island. There were deflnite increases in the beetle infestation through- 
out the bean-growing section of Maryland and the Eastern Shore of Virginia. 
Many new infestations were found during 1936 in nursery and greenhouse 
premises in northern New Jersey and Virginia. A total of 23 nursery and 
greenhouse establishments were infested in the New England sector. No 
classified nurseries were found infested in West Virginia or the Eastern Shore 
of Virginia. The last of the nursery and greenhouse scouts were dismissed 
on September 19. 
There were no new developments in the procedure for the sterilization and 
fumigation of nursery stock, other than the formal approval of the paradi- 
<-hlorobenzene treatment of certain varieties of azaleas. This type of treat- 
ment was also tried with some measure of success on other varieties of plants 
to determine the effect of the funiigant on survival of the plants. 
Owing to the extremely dry weatlu>r there was little movement of nurserv 
stock in September. In general, however, shipments were heavier this year. 
Throughout the regulated area there was an increase in the number of ship 
ments of nursery stock during February over those in the same month for the 
past several years. Extremely mild weather reported in most sections as early 
as January .stimulated the nursery trade to much above average. Nurseries 
were able to sliip almost continuoiisly throughout the winter. 
By March temporary inspectors were required at several points to meet the 
demands of the increased nursery activities. At Trenton, where 1 nursery 
reported IB carload shipments for the month, 6 temporary inspectors wer^ 
added. Spring shipments of nursery stock were not completed this year until 
