LIST OF PLATES. 



FACING PAGE 

 . 49 



PLATE 



I. Portrait of Professor Suess .... 



II. Stems of Eguisetites columnaris (Brong.) . . . . . 4 



III. Structure of Lophophylluvi and Cyathaxonia .... 56 



IV. Chalk Polyzoa 97 



V. The Mekong-Yangtze Divide . . . . . . . 148 



VI. The Mekong Eiver at Tew-kow 150 



VII. Chalk Polyzoa 198 



VIII. Chalk Polyzoa • .248 



IX. Portrait of Professor James Geikie 241 



X. Solenopora ganvoodi, Hinde, sp. nov. ..... 292 



XI. Portion of a trunk of Lepidodendron veltheimianum, Sternberg 338 



XII. Sections of pedicle valve of Syringothyris aff. carteri (Hall), etc. 401 



XIII. Gothurnocystis EUzcb and Dendrocystis scotica, Bather . . 423 



XIV. Chalk Polyzoa 436 



XV. Eoanthropus Daivsoni, A. Smith Woodward .... 433 



XVI. Vegetation and Desert Surface-features, South-West Texas . 481 



XVII. Arid Surface-features, South-West Texas 484 



XVIII. Portheus molossus, Cope, Chalk, Kansas 529 



FOLDING TABLES. 



I. North American and European Drift Deposits . 

 II. Geological Horizons at which Calcareous Algse occur 



14 

 553 



