INDEX 



Numbers in bold lace indicate pages with illustrations 



Aberrations, chromosomal, 475-485 

 Abscission, 73, 170, 402 

 Absciss-layer, 32, 73 



Absorption, 320, 322, 323, 325 

 Acclimation (see Adaptation) 

 Accumulation ot food, 51. 114, 131, 140, 



145, 147; of water, 222, 230, 710 

 Aceraceae, 71 1 

 Acetic acid, 155 

 Achlya, 548 

 Acidity, 31, 43, 219 

 Acids, amino, 143, 175: fatty, 138, 168, 



oleic, 

 138 



palmitic, 



175; lactic, 156; 

 138, 139; stearic. 



Adaptation, 498 



Adder's-tongue, 745 



Aecia, 560, 561 



y\eration, 310 



Aerobes, 518 



After-ripening. 395 



Agave, 85, 88 



Air spaces in leaves, 70, 71, 81, 87. 228 



Akene, 363 



Albumin. 142 



Alcohol. 155 



Algae, 5. 17. 565, 606-637: blue-green, 

 608, 621, 623, 636; brown, 601. 608, 

 628, 629, 630, 632; colonial 615; coral- 

 line, 634, 635; economic aspects of, 

 609; filamentous, 616, 619, 620; fossil. 

 625. 727; green, 608, 613-621; life 

 cycle, simimary of, 636; periodicity of, 

 611, 612: plankton, 611; red. 608, 633. 

 634; soil, 610: imiccUular, 615; yellow- 

 brown, 608; yellow-green, 608, 627, 

 636 



Alkalinity, 31 



Alkaloids, 169, 174 



Amanita, 542 



Amides, 144 



Amino acids. 142-144, 146. 175 



Aminiaceae, 712 



Ammonia, 144, 532 



Ammonification. 532, 537 



Amorphophallus, 358 



Amylase, 133 



Amylopectin, 133 



Amyloplasts, 65 



Amylose, 133 



Anaerobes, 518 



Anaphase, 446 



Andreaeales, 650 



Angiosperms, 368, 687-690, 693-717 



Animals, vs. plants, 1, 2, 5, 45, 107, 607; 

 fossil restorations of. 732, 733 



Annuals, 32, 46 



Anther, 354, 373 



Antheridia, 547, 618. 647 



Anthoceros, 652 



Anthocyanins, 28. 31. 169 



Antibody, 524 



Antitoxin, 524 



Apical dominance, 250. 410; growth. 278 



i\ppert. 527 



Apple, diseases of, 571, 574; energy trans- 

 formations in, 184; flower and fruit, 

 356; scab, 572, 576; seedlings. 348; 

 spur, 254 



Aquariiun, balanced, 180 



Aquatics, 90, 587, 601, 606. 667 



Arbor vitae, 311; western, 776, 783, 784 



Archegonium, 646, 666, 685 



Archeozoic, 723, 727 



Aristotle, 101, 526 



Armillaria, 420 



Arsenites and algae. 609 



Arundinaria, 762 



Ascocarp, 550, 551 



Ascomycetes, 552 



Ascospores, 550, 551 



Ascus, 550. 551 



797 



