INDEX 



[The * refers to inscription below the illustration.] 



ADAPTATION, 12 



in Palaeozoic plants, 233- 



237 



Adaptations, 232 

 Albuminous seeds, 49 

 Alga? fossil, 27 

 Alternation of generations, 



136, 222, 225, 226 

 Aneimites 



seeds, 114 

 Angiopteris, 148, 149 



evecta, *148 

 Angiosperms, 29-56 



and Bennettitese compared, 

 85-95 



geological history of, 3740 



marine, 35 



origin of, 55 

 Antheridium, 122 



Ferns, 121 



Isoetes, 167 



Selaginella, 164 

 Araucarian conifers, 133 

 Arber, E. A. N., 144 

 Archceocalamites, 208, 210 

 Archegonium 



Ferns, 122 



Isoetes, *185 



Lepidodendron Veltheimi&- 



num, *185 

 Arum family, 45 

 Azolla, 123, 126, 139 



Bacteria, 18 

 Balsam, 47 

 Bast, function of, 52 

 Bee orchis, 42 



Bennettitese, 79, 100, 118, 153 

 and Angiosperms com- 

 pared, 85-95 



Bennettitese and Dicotyledons 

 compared, 93 



fertilisation, 93 

 Bennettites 



bracts, 82 



dacotensis, 82 



embryo, 87 



flower of, 80, *83, 82-85, 96 



fruit, 85 



Gibsonianus, 79, 85, *86 



gynaecium, 85, 92 



marylandicus, *81 



ovules, 92 



pollen-sacs, 84 



seeds, 87 



stamens, 83, 90 



stem, 80 



Bothrodendron, 184 

 Bowenia, 59 

 Bracken-fern, 231 

 Broom-rape, 32 

 Bryophytes, 18, 223 



evolution of, 228 

 Buttercups, 44 



Calamite, 199-211 



cone, 205-209, *206 



heterosporous, 207 



leaves, 204 



roots, 205 



secondary growth, 203 



sporangia, 207 



spores, 206 



stem, 202 

 Calamites, 124, 199-209 



relation to Horsetails, 210 



Sphenophylls, 216-219 

 Calyx, 43 

 Cambium, 51 

 Cambian formation, 27 



248 



