BUREAU OF ENTOMOLOGY AND PLANT QUARANTINE 
37 
GYPSY AND BROWN-TAIL MOTH QUARANTINE ENFORCEMENT 
CERTIFICATION OF QUARANTINED PRODUCTS 
Continued heavy infestations of the gypsy moth in sections of the 
generally infested area again resulted in an increase in the number 
of egg masses and other stages of the insect removed during routine 
inspections of quarantined products. Total shipments certified num- 
bered 98,302. This represents a 16-percent increase in the volume of 
inspection work. From these shipments there were removed and 
destroyed 3,403 egg clusters, 303 larvae, and 133 pupae. The most 
heavily infested shipment inspected was a carload of lumber in- 
spected at Madison, N. H., prior to movement to Rochester. N. Y. 
Three hundred and thirty-seven egg clusters were removed from the 
boards in this shipment. There was no change in the quarantine 
regulations as previously revised effective September 29, 1938. 
On December 7, 1939, the district field office supervising the enforce- 
ment of the gypsy and brown-tail moth quarantine was removed 
from the customhouse in Boston to 144 Moody Street, Waltham, Mass. 
A long-continued dry spell late in the summer and cold weather, 
snow, and an unusual amount of frost in the ground during March 
and April hampered nursery shipments during the fall and spring- 
shipping seasons. This was the first season on record that spring 
digging was so long delayed over the entire New England area. Cool 
rainy weather continued into May, permitting continuance of digging 
operations during the entire month. 
Eleven temporary inspectors were added to the inspection force 
during October in Connecticut and Massachusetts. Their principal 
assignment was the inspection of nursery stock going into winter 
storage. Thirty-three temporary inspectors were employed in con- 
nection with the inspection of nursery products during April. Nine 
of these were stationed at a forest nursery in Maine to inspect 2,000,- 
000 young trees. 
Inspection of nursery stock at one of the nurseries in the Middle- 
town, Conn., area resulted in the finding of two gypsy moth egg 
clusters. Prior to the fall of 1939, permits had been issued to this 
establishment and those in the immediate vicinity, on the basis of 
their freedom from gypsy moth or Japanese beetle infestation. 
When egg clusters were found on one of the establishments in this 
nursery center, all nursery permits in that section were suspended. 
Five egg clusters were removed from nursery stock offered for in- 
spection by one of these nurseries during the spring shipping season. 
From 25,448 shipments of nursery stock certified during the year 
there were removed 39 egg clusters and 1 pupa. Classes of nursery 
products inspected were as follows: 
Number 
Shrubs 3, 068, 366 
Specimen trees 2t>, 422 
Young trees 160, 035 
Specimen evergreens 468, 229 
Young evergreens 4, 886, 654 
Seedlings, cuttings, and small plants 2, 533. 734 
White pine trees 340. 584 
A combination of increased business and ideal weather condi- 
tions during the Christmas tree cutting and inspection season, Novem- 
ber 1 to December 23, contributed to an increase in the quantity of 
