6 U. S. DEPARTMENT OF AGRICULTURE BULLETIN NO. 484, 
Complexity and variable composition of woods in the area infested by the 
gipsy moth. 
1acre in Dover, Mass. Mixed 5.4 acres in Wareham, Mass. 3.4 acres in North Berwick, Me. 
hardwoods. Mixed hardwoods—Con. Northern hardwoods. 
Species: Per cent. || Species—Continued. | Percent. || Species: Per cent. 
Redioaks sensu sess 45 Grayabicchsae na 1 ‘Becchs332 2 asa 45 
White oak. ....-..-- 38 Black gum.....--- Q) Hop hornbeam... iGa 
Black oak....------ " Pinned rue setiple Se ens e 4 
eannapie oe! NN) Black ep i 
Gray, birehs=- 22 (@) Hemlock, ........- 4 
Pignut hickory-..-- () 1.3 acres in Medfield, Mass. Yellow birch.....- 3 
White ash.....-..- (1) Mixed hardwoods. Redtoaks 2220 ae. 2 
eae ie birch] 2 
100 telashveseeeees 1 
Species: Per cent. Big-tooth poplar- - @) 
Chestnut 2e5--eeee 52 Basswood tags tae fe 1 
21 acres in Exeter, N.H. Mixed Redvoakiye v0 222 21 merican elm. ..-- 
2 hardwoods. ite Oakeae aaa 10 Black ash.......-- (*) 
Tbe PINE eee ece 9 
Black 0akeses-eeee vi 100 
Species: Per cent Red maple..-....- I 
Redtoalkes es ccacee 31 100 
Wihiterork 2 s0 52% 30 11 acres in Westbrook, Me: 
iBlackioak: 22-6 ss. 26 wie pine and mixed hard- 
Red maple........- 7 . woods 
2 : 4.2 ac A bury, Mass. 
WMS TOREGS oracle WWUNE GeO ore) Wiccan 
SUE EC De oo eaces () woods (old-field growth). 
Pignut hickory...-- (4) ae 
: } Species: Per cent 
iBlackpirchs sss: 2 (4) White pine.......- 
Been Ses e gS 2BGS 9) Species: Per cent Red oakwiise res 21 
HBS Dai els seca se: Q) White pine... 28 Gray birch. ....-.- 20 
Yellow birch......- Q) Gray birch... 1.2. O1 Ted winjsle aa luee 16 
See ween sees eee oo) Black oak........- 16 Hemlock.........- 7 
Elm eee eae Red maple.......- 10 Paper birch....... 3 
een )-- Bitch pine — sles 8 Shagbark hickory. 2 
Pple..------------ @) Wihttefoake: sees. 5 Balsam firs seer 1 
EE eT Red cedar......-.- 5 Wihiteash 222 1 
100 White ash........- 2 Big-tooth poplar. - 1 
ewanlp we oak Q) 1 oe bes Gp ier i 
esinultsee ee op hornbeam... 
5.4 acres in Wareham, Mass. Redioak Se (4) Piteh pines sees (@) 
Mixed hardwoods. Bilackipirehis snes (4) Chestnut=.3sa=s242 (4) 
ime) | Sere eee 
eet yee se ugar maple.....-. 
Species: Per cent. A'S PCH Ieee ee eae () Beech’. 252 teen (2) 
Scarlet oak........- Wild red cherry... (1) 
White oak........- American elm..... (1) 100 
White pine......... Hop hornbeam (1) 
Black oaks. 5222s Apples yet eree (2) 
Pitch pine: 2-222_ => 
Redioake is o..252: (2) 100 
Red maple........- (1) 
1 Less than 1 per cent. 
‘The physical condition of the trees composing the woods in the 
infested region is extremely poor, due largely to the action of re- 
peated fires which destroy the litter and decomposed vegetable mat- 
ter so essential to successful tree growth. Fire is also responsible 
for physical injury to trees and the admission through fire wounds of 
injurious fungi and insect borers. 
A very high percentage of the 
deciduous trees in the infested region is of sprout origin. The stools 
from which these have sprung are often worn out and more or less 
decayed, and from such impaired stock it is unreasonable to expect 
successful tree growth. 
Owing to poor physical condition, small size, and limited propor- 
tion of desirable species, the woods of the infested region are of rela- 
tively low commercial value. 
Under present conditions a large 
