INDEX AND GLOSSARY 



Abiogen esis (a, not: /Sto?, life: 



origin), the origin of organisms from 

 not-living matter : former belief in, 96 



Absorption by root-hairs, 341 



Accre'tion (ad, to : cresco, to grow), in- 

 crease by addition of successive layers, 



i4 



Achrom'atin (a, not : XP^, colour), the 

 constituent of the nucleus which is un- 

 affected or but slightly affected by dyes, 

 7, 63 



Acoelom'ate (a, not : /cot'Awju.a, a hollow), 

 having no ccelome (q.v.) '. 301 



Ad.ctu.Ct 'or muscles, Mussel, 322 



Aerob'iC (cojp, air : /3i'o?, life), applied to 

 those microbes to which free oxygen is 

 unnecessary, 93 



Agamob'ium (a, not : ya^os, marriage : 

 /3ios, life), the asexual generation in or- 

 ganisms exhibiting alternation of gene- 

 rations (q.v.) 



AGAR'ICUS (mushroom): Figure, 192: 

 general characters, 191 : microscopic 

 structure, 193 : spore-formation, 193 



Algae (alga, sea-weed), 169 



Alternation of Generations, meaning of 



f he phrase explained under Nitella, 220 : 

 Boueainvillea, 250 : Moss, 340 : Fern, 

 361 : Equisetum, 367, 368 : Salvinia, 370 : 

 Selaginella, 373 : Gymnosperms, 377 : 

 Angiosperms, 383, 384 



Ambula'cral (ambulacrum, a walking 

 place) system, starfish, 313 



AMCEB'A (<iju.ot/36?, changing): Figure. 

 2 : occurrence and general characters, i : 

 movements, 4, 10 : species of, 8 : resting 

 condition, 10, n : nutrition, n : growth, 

 13: respiration, 17 : metabolism, 17, re- 

 production, 19 : immortality, 20 : conju- 

 gation, 20: death, 20, 21: conditions of 

 life, 21 : animal or plant? 180 



Amceb'oid movements, 4 



Amceb'ula (diminutive of Amoeba), the 



amoeboid germ of one of the lower or 

 ganisms, 51-54 



Anab'olism (ai/a/SoAr;, that which is 

 thrown up). See Metabolism, construc- 

 tive. 



Anaerob'ic (a, not : aTjp, air : u>s, life), 

 applied to those microbes to which free 

 oxygen is unnecessary, 93 



An'al (anus, the vent) segment, Poly- 

 gordius, 273 



An'al spot, Paramcecium, 113 



An'astateS (d^acrraTos, from ai'acrTTJrcu, 

 to rise up, 18. See Mesostates, anabolic. 



Anatomy (ai/are'/ni'to, to cut up), the study 

 of the structure of organisms as made 

 out by dissection. 



Andrce'Cium (dv^p, a male : OIKO?, a 

 dwelling), the collective name for the 

 male sporophylls in the flower of Angio- 

 sperms, 381 



AN'GIOSPERMS (ayyelov, a vessel: 

 ff-Tre'p/ua, seed) : Figure, 379 : general 

 characters, 378-381 : structure of flower, 

 378 : reduction of gamobium, 381, 382 : 

 pollination and fertilization, 382, 383 : 

 formation of fruit and seed, and develop- 

 ment of the leafy plant, 383, 384 



Animal, definition of, 176 



Animals, classification of, 307 



Animals and Plants, comparison of type 

 forms, 176, 177 : discussion of doubtful 

 forms, 180 



Animals, Protists, and Plants, boun- 

 daries between artificial, 181-183 



Anther, 381 



Antherid'ium. See Spermary. 

 Antherozo id See Sperm. 

 Antipodal cells, 382 



An'US (anus, the vent), the posterior aper- 

 ture of the enteric canal, 273 



Ap'ical cell : Penicillium, 190: Nitella, 

 2Ti : Moss, 335 : stem of Fern 350 : r< ot 

 of Fern, 353 : prothallus of Fern. 357 



Ap'ical cone, Fern, 350 



A'pical growth, 190,351 



