INDEX. 



Orders and families in SMALL CAPS ; genera in heavy face ; synonyms 

 in italics. Figures in parenthesis indicate illustrations. 



NOTE. The trees embraced in the I^ist of the More Important Trees of the 

 United States are not indexed see list page 369. 



Abies, 227. 



balsamea, (228), 227. 



concolor, 229. 

 Acacia False, 333. 



Threethorn, 329. 

 Accretion, 139. 

 Accretion borer, (151), 150. 

 ACERACE.E, 335. 



Acer, 335. 



Acer dasycarpum, 340. 



negundo, (347), 348. 



pennsylvanicum, 346. 



platanoides, (339), 338. 



platanoides reitenbachii, 340. 



platanoides schwedlerii, 340. 



rubrum, (344), 343. 



saccharinum, (341), 340. 



saccharinum, 336. 



saccharum, (337), 336. 



spicatum, 345. 



tartaricum, 346. 



tartaricum ginnale, 346. 

 Act for prevention of forest fires in 



Minnesota, 193. 

 Actual income, 187. 

 ^Bsculus, 348. 



glabra, (350), 351. 



hippocastanum, 349. 

 Agaricus melleus, (118), 112. 

 Alarm about destruction of forests, 



184. 



Alkali soils, Occurrence, 25. 

 Almondleaf Willow, (252), 251. 

 Alder Hoary, 280. 



Speckled, 280. 



A Inns incana, (281), 280. 

 Altimeter, 183. 



Amelanchier, 317. 



alnifolia, 318. 



canadensis, 317. 



canadensis abovalis, 318. 

 American Aspen , 260. 

 A merican Elm, 299. 

 American Larch, 214. 

 American Linden, 353. 

 American Mountain Ash, 312. 

 Angle mirror, 147. 

 Angle prism, 147. 

 Annual rings, 11, 126. 

 Antiseptics, 180. 

 Arborvitse, (231), 230. 



Douglas Golden, 233. 



Pyramidal, 233. 



Siberian, 232. 



Areas of Circles, Table of, 136. 

 Ash Black, (363), 361. 



Green, 361. 



Hoop, 362. 



Mountain, 312. 



Elderleaf Mountain, (315), 314. 



Red, 360. 



Swamp, 362. 



White, (359), 358. 

 Ashleaf Maple, 848. 

 Aspect, Effect on growth, 26. 

 Aspen, (261), 260. 

 Assimilation, 17. 

 Austrian Pine, (212), 211. 



Ax and Saw, 72. 



Balm of Gilead, (263), 262. 



Hairy, 264. 

 Balsam, 227. 

 Balsam Fir, (228), 227. 

 Bark, 12. 



