LIST OF PLATES. 



PLATE PACING PAGE 



I. Quartzite Pebbles, Oldhaven Beds . ..... 70 



II. Carboniferous Fossils, Siam ....... 178 



III Fig. 1 : Lateritized Norite, Wilberforee, Sierra Leone. Fig. 2 : 



Residual Laterite derived from Granite, Baoma, Sierra Leone 220 



IV. New Lower Devonian Homalonoti ...... 303 



V. Jurassic Ammonites from East Africa . . . . .311 



VI. Memorial Tablet to Professor James iSIicol, Aberdeen . . 387 



VII. Ambulacra of Apatopygas, Oligopodia, and young Echinolamjjas 393 



VIII. Diamond Pipes in Brazil ....... 447 



IX. Forsterite Marble, Sleaford Bay 449 



X. .James Hall, Albany Museum, New York, LT.S.A. . . 483 



XL Diopside and Microcline Rock, Sleaford Bay .... 492 



XII. Cretaceous Echinoidea from Persia ..... 500 



XIII. Sjihcurocoryphe fhomsoni Reed . . . . . . 534 



XIV. Four species of Etheridgina ...... 538 



XV. Xew Ammonite genus, Dayiceras . . . : . 543 



Separate Folding Map : Geology of Ningi Hills, Nigeria (not 



nnmbered) ......... 440 



