ENTOirOLOGY AND I'l.ANT QUARANTINE 
29 
Table 10. — Evergreen nroducts, forest products, stone and quarry products, and 
steel rails <serti)ved under gypsy moth quarantine, fiscal year 1937 
Material 
Evergreen products: 
Boughs, balsam twigs, and mixed greens. ..boxes or bales 
Christmas trees number 
Laurel - boxes or bales 
M iscellaneous . - boxes . . | 
Quantity 
21, 646 
634, 365 
8, 740 
12, 559 
Total. 
Forest products: 
Barrel parts, crates, crating .bundles, cases. . 
Logs, piles, posts, poles, ship knees, and ties|p^g[,g|^^ 
Fuel wood - cords.. 
Pulpwood. do 
Lumber board feet.. 
Empty cable reels number.. 
Shavings bales . . 
Shrub and vine cuttings .boxes.. 
M iscellaneous bundles, boxes . . 
Do pieces.. 
Do... tons.. 
45, 80' 
80, 932 
5 
665, 163 
5, 308 
60, 671 
67 
20, 144 
43, 291 
9, 635 
632, f.l3 
91, 357 
1, 265 
Total. 
Stone and quarry products: 
Crushed rock... tons.. 
Curbing running feet.. 
Feldspar tons.. I 
Granite pieces. 
Monumental stone... do I 
Grout tons.. 
Marble pieces.. 
Paving blocks number.. 
M iscellaneous. pieces. . 
Total 
Steel rails i carloads.. 
665 
171, 122 
8, 560 
124, 552 
23, 089 
43,966 
678 
193, 751 
96, 300 
12 
Certifi- 
cates 
issued 
Number 
3, 938 
1, 361 
2, 346 
10. 525 
18, 170 
1,093 
3, 148 
388 
2, 071 
5, 492 
3, 328 
202 
1, 101 
1, 739 
Gypsy moths found 
Egg 
clusters 
Number 
19 
18. 562 
55 
383 
429 
5,816 
16, 297 
547 
345 
403 
514 
24, 789 
26 
961 
1, 102 
Larvae 
and 
pupae 
Number 
311 
34 
355 
From abandoned railway lines. 
DUTCH ELM DISEASE ERADICATION 
GENERAL STATUS 
Results of the year's campaign encourage the belief that the Dutch elm 
disease (Ceratostomella ulmi) can be eradicated from the United IStates. A 
nominal increase in extent of the infected zone may be attributed in great meas- 
ure to increased scouting activities and more thorough coverage. The successful 
cooperation of Federal and State agencies, the improvement of scouting, sani- 
tation, and removal methods, and sufficient W. P. A. funds for skilled nnd 
unskilled labor are the major factors which account for the greater smoothness, 
continuity, and progress made this year. Larger and better trained forces of 
scouts vs'erc in the field considerably earlier in the foliar season than in 10,'>5. 
Particular attention was paid to clear-cutting operations in swamp districts and 
to railroad scouting. 
SYSTEMATIC SCOUTING 
Up to the beginning of the year the established cases of Dutch elm disease 
had totaled 15,485, including 160 cases in Connecticut, 10,109 in New Jersey, 
5,156 in New York, and 60 in isolated infection centers. 
Intensive systematic scouting for diseased trees began about July 1 and con- 
tinued until the middle of September. A maximum of 3,110 W. P. A. scouts 
were employed during the season. At the peak of the season 550 C. C. C. en- 
roUees were assigned to systematic scouting in woodland areas. By August 29, 
€S3 crews were in the field. 
