INDEX 
Abiogenesis, 89 
Abscission layer, 101 
Absorption, n 
Acacia, 327 
Acer rubrum, 337 
"Adder's tongue," 175, 177 
Adirondack bog, 580 
Adjustment to environment, i 
Adiantum, 156, 170 
concinnum, 173 
Adnation, 464 
Aerobes, 103 
Aesculus Hippocastanum, 36, 
121 
Agapanthus umbellatus, 608 
Agaricus campestris, 288 
Agassiz, Louis, 505 
Agathis australis, 610 
Albugo Candida, 292 
Alcoholase, 100 
Aldehydase, 79 
Alfalfa leaf-spot, 295 
Alismaceae, 491 
Alisma Plantago-aquatica, 
492, 493 
Allelomorphs, 555 
Alnus, 83 
Alsatian clover, 469 
Alsike, 469 
Alternation, antithetic, 575 
homologous, 575 
Ambrosiasese, 488 
Amorpha, 467 
Amylase, 80 
Amyloplast, 78, 81 
Anaerobes, 102, 103 
Anatomy, 4 
Anchorage, n 
Andreaeales, 193 
Androecium, 435 
Anemone, 462 
89 Anemonella thalictroides, 463 
Angiopteris evecta, 595 
Angiosperms, 408, 446 
ancestors of, 600 
life-cycle of an, 444 
120, Annulus, 157, 202 
Ant, fungus-growing, 326 
Anther, 436 
Antheridia, 170, 171 
Antheridiophores, 196 
Anthesis, 472 
Anthoceros, 209, 214, 219, 220, 
34i, 356 
fimbriatus, 210 
fusiformis, 209, 214, 215 
laevis, 213 
444, Pearsoni, 213 
phymatodes, 217 
punctatus, 209 
tuberosus, 217 
Anthocerotales, 210 
Antipodal cells, 440 
Antiseptic surgery, 315, 316 
Antitoxin, 314 
Ants, leaf-cutting, 325 
623 
