GENERAL INDEX 



[Exclusive of host references listed on pp. 203-204. Italic type denotes principal reference.] 



Abebaea, 87. 



Acanthocinus, 136, 137. 



Acmaeodera, 150. 



Acorn moth, 23. 



Acorn weevils, 22. 



Acossus, 155. 



Adelges, 47, 48. 



Aegeria, I40. 



Aegeriidae 139, 140. 



Aglais, 165. 



Agrilm, 36. 



Airplane dusting. See Dusting. 



Alcathoe, I40. 



AUomyia, 54. 



Alniphagus, 131. 



Alticd y3 



Ambrosia beetles, 141, 143-147. 



Anobiidae, 159. 



Anthaxia, 36. 



Ants — 



carpenter, 28, 141, 161. 



white, 162. 

 Aonida, 51. 

 Apanteles, 72, 

 Aphids— 



bark, 46. 



gall, 52. 



general, 24, 29, 44, 45, 161, 176. 



Monterey pine, 46. 



root, 23, 28. 



spruce, 45. 

 Arachnida, 12, 44. 

 Arctiidae, 66. 

 Argyresthia, 42, 43. 

 Argyrotaenia, 82, 84. 

 Armyworms, 164. 

 Asemum, 153. 

 Aspidiotus, 50, 51. 

 Atimia, 137. 

 Augomonocfenus, 20. 

 Bacteria, 11, 169. 

 Balaninus, 22. 

 Barbara, 19. 

 Bark aphids, 46. 

 Bark beetles — 



alder, 131. 



ash, 131. 



bigtree, 131. 



birch, 132. 



broadleaf, 131. 



cedar, 129. 



control of, 179. 



cypress, 131. 



detection of, 180. 



fir, 118, 120. 



fir root, 125. 



general, 4, 5, 8, 27, 56, 57, 58, 96, 133, 167, 

 172. 



grand fir, 125. 



hemlock, 128. 



juniper, 131. 



larch, 129. 



losses, 5, 97, 99. 



mountain mahogany, 132. 



noble fir, 125. 



oak, 132. 



pine, 98. 



redwood, 131. 



root, 23, 27. 



Sargent cypress, 131. 



shrub, 132. 



spruce, 125. 



suppression, 186. 



surveys, 181. 



western cedar, 131. 



Bark lice, 47. 

 Bark maggots, 168. 

 Bark scorch, 11. 

 Bees, carpenter, 162. 

 Beetles- 

 Alaska spruce, 127. 



alder flea, 93. 



ambrosia, 141, 1 43-1 47. 



Arizona pine, 102. 



barber, 109. 



bark. Scfi Bark beetles. 



Black Hills, 96, 106, 196. 



clerid, 105. 



Colorado pine, 102. 



cone, 4, 16. 



Cottonwood leaf, 94. 



dendroctonus, 98. 



dicerca, 149. 



Douglas fir, 119, 120, 127, 128. 



elm leaf, 94. 



Engelmann spruce, 126. 



engraver- 

 fir, 122. 



general, 110-117, 127, 168. 

 pine, 56, 110, 111. 

 spruce, 127. 



ips. 111. 



Jeffrey pine, 107, 113. 



June, 24. 



leaf, 93. 



lodgepole pine, 109. 



long-horned, 36, 134, 135, 150. 



lyctus, 159. 



mountain pine, 7, 96, 102, 107, 113, 128, 194, 196. 



oak timber, I47. 



ostomid, 99. 



pepper grass, 166. 



pine, 98, 168. 



pityogenes, 117. 



powder post, 141, 159. 



red turpentine, 109. 115, 168. 



roundheaded pine, 102. 



Sitka spruce, 127. 



southwestern pine, 100, 102. 



spotted willow leaf, 94. 



twig, 8, 29, 30-33, 168. 



western cedar bark, 131. 



western pine, 5, 96, 99, 102, 167, 169, 196. 



western willow leaf, 94. 



willow leaf, 9i. 



Wilson's wide-headed ambrosia, 145. 



wood engraver, 117. 

 Beneficial insects, 169. 

 Birds, 169. 

 Bli-ht, parch, 11. 

 Borers- 

 alder, 140. 



amethyst cedar, 137. 



bark, 56. 



black-horned pine, 153. 



cone, 21. 



Cottonwood crown, I40. 



Ergates wood, 161. 



fir flatheaded, 134. 



flatheaded, 29, 35, 37, 132-134, 141. 



flatheaded cone, 21 . 



flatheaded wood, I47. 



lead cable, 161. 



locust, 136. 



metalic wood, 132. 



pine flatheaded, 133. 



pinhole, I43. 



ponderosa pine bark, 136. 



ponderous, 151. 



poplar, 137. 



205 



