LIST OF ILLUSTEATIOI^S. 



PAOB 



Table op Chronology op Plants .... (Frontispiece.) 



Protannularia Harkncssii 21 



Nematophvton Logani (three Figures) 22, 23 



Trail of K!ng-Crab 28 



Trail of Carboniferous Crustacean 28 



Rusichnitcs 29 



PaliPophyciis 30 



Astropolithon 31 



Carboniferous Rill-mark 33 



Cast of Shrinkage Cracks 34 



Cone-in cone 36 



Buthotrephis Si 



Silurian Vegetation 40 



Brian Plants 49 



Protosalvinia 64 



Ptilophyton (two Figures) 62, 63 



Psilophyton (two Figures) 64, 66 



Sphenophyllum 66 



Lcpido>'endron 66 



Various .. cms 72,73 



ArcluTopteris 74 



Cauloptcris 75 



Megalopteris 76 



Calamites 77 



Asterophyllites . . , 78 



Dadoxylon ,,,... 79 



