160 MISCELLANEOUS PUBLICATION NO, 725, U.S. DEPARTMENT OF AGRICULTURE 
Dogwood 
diseases, 160, 951, 1102, 
1103, 1105, L106; 50345 
Dorman, K. W., 1965, 1966 
Dote--SEE Decay 
Dothichiza populea, 865, 889 
Dothiora polyspora, new 
species, 1693 
Dothiorella ulmi, 497, 
movement inelm, 34 
new species, 2013 
variation, 498 
Doeuplas,, W: R27) 135! 
Douglas-fir 
Adelopus gaumanni, 150, 706 
Adelopus needle-cast, 150, 
1403 
Botrytis sp., 2140 
canker, Great Britain, 
Dasyscypha ciliata, 701 
Dasyscypha pseudotsugae, 701 
Dasyscypha sp., 1005 
decay, 107; Ils, P19," 134, 
147 
decay resistance, 492, 1668 
deterioration of fire-killed, 
45a, 1127 
dieback, 2135 
disease, 1006 
heart rot fungi, 1681 
multiple seedlings, 588 
needle blight, 2174 
needle cast, 150, 706, 1403 
Phomopsis lokoyae, 149, 694 
Phomopsis pseudotsugae, 
England and Scotland, 110 
Polyporus schweinitzii, 123, 
886 
Rhabdocline needle blight, 484 
Downs, Albert A., 966 
Drought 
injury, 758, 803. F362, 385: 
1869, 2077 
tests, shortleaf pine, 352 
Dry rot--SEE Decay 
Duncan, Catherine G., 1665, 
1666, 1667, 1669 
1118 
1431 
Durability 
American woods, 1038, 1040 
Nectandra, 1036 
oak posts, untreated, 1262 
Sap-gum lumber steaming, 
1676 
wood, 1190 
chemical composition, 822 
Dutch elm disease, 31, 32, 47, 
495.50; GLA62, 67 hE Toe 
Dutch elm disease--Continued 
Li72, 13210, RSLE 1312... 
1315, 1326351317, 13819.4420; 
1322, 1323, 1324, 1346, 1352, 
1441, 1549, \h741 .A926i28927-. 
1932, 1933, 1934,.1968, 1978, 
ZEOA SAAS) 
America, found in, 1443 
and injuries, 1735 
bibliography, 8, 566 
detection, 7 
elm, 1738, 1739 
recovery of, 1737 
recurrence, 36 
Europe, 68 
fungus--SEE Ceratostomella 
ulmi 
imported elm burl logs, 59, 
60, 66, 80, 644, 1961 
Indiana, 64 
New Jersey, 56, 2229, 2230 
New York, 57, 58, 65, 2230 
nitrogen, effect, 32 
Norfolk, Va., 63 
Ohio; ©1314, £1355, 1356 
outbreaks in the United States, 
1318 
planertree, 1739 
pruning, 1351 
quarantine, 65 
resistance 
breeding, 1741 
propagating, 171, 189, 190 
survey and sampling, 1969 
threat, 48 
Dwarf mistletoe--SEE Mistletoe, 
dwarf : 
Echinodontium tinctorum, 2144, 
Zee2 
Ellis, Don’; 
Elm 
Beauveria bassiana on insects, 
1476 
black spot, 1300 
canker, 1031 
Cephalosporium dieback, 
1984, 1985 
Ceratostomella ulmi--SEE 
Ceratostomella ulmi 
decay, 1018 
dieback,-1l1L18, 1328,.1353, 
1354, 2013 
diseases, 624, 625, 1171 
Dothiorella ulmi, 34, 2013 
Dutch elm disease--SEE Dutch 
elm disease 
1281 
