INDEX. 
Orders and families in SMALL CAPS; genera in heavy face; synonyms 
in zfalics. Figures in parenthesis indicate illustrations. 
NotTE.—The trees embraced in the List of the More Important Trees of the 
United States are not indexed — see list page 369. 
Abies, 227. Amelanchier, 317. 
balsamea, (228), 227. alnifolia, 818. 
concolor, 229. canadensis, 817. 
Acacta—False, 338. canadensis abovalis, 318. 
— Threethorn, B29. American Aspen, 260. 
Accretion, 139. al merican Elm, 299. 
Accretion borer, (151), 150. American Larch, 214. 
ACERACE4, 835. American Linden, 353. 
Acer, 335. American Mountain Ash, 312. 
Acer dasycarpum, 340. Angle mirror, 147. 
negundo, (347), 348. Angle prism, 147. 
pennsylvanicum, 346. Annual rings, 11, 126. 
platanoides, (339), 338. Antiseptics, 180. 
platanoides reitenbachii, 340. Arborvitz, (281), 230. 
platanoides schwedlerii, 340. — Douglas Golden, 283. 
rubrum, (344), 343. — Pyramidal, 283. 
saccharinum, (341), 340. — Siberian, 282. 
saccharinum, 336. Areas of Circles, Table of, 136. 
saccharuim, (887), 336. Ash—Black, (863), 361. 
spicatum, 345. — Green, 361. 
tartaricum, 346. — Hoop, 362. 
tartaricum ginnale, 346. — Mountain, 312. 
Act for prevention of forest fires in — Elderleaf Mountain, (315), 314. 
Minnesota, 193. — Red, 3860. 
Actual income, 187. — Swamp, 362. 
4B sculus, 348. — White, (359), 358. 
glabra, (350), 351. Ashleaf Maple, 348. 
hippocastanum, 349. Aspect, Effect on growth, 26. 
Agaricus melleus, (113), 112. Aspen, (261), 260. 
Alarm about destruction of forests, Assimilation, 17. 
184. Austrian Pine, (212), 211. 
Alkali soils, Occurrence, 25. Ax and Saw, 72. 
Almondleaf Willow, (252), 251. Balm of Gilead, (268), 262. 
Alder—Hoary, 280. — Hairy, 264. 
— Speckled, 280. Balsam, 227. 
Alnus incana, (281), 280. Balsam Fir, (228), 227. 
Altimeter, 183. Bark, 12. 
