Toxaster complanatus 329 109. Foraminifera from the Chalk 342 110. Nummulites, or Nummulina 344 111. Foraminifera from the Chalk 347 112. Spirolinites in flint 349 113. Nonionina Germanica (recent) 350 114. Foraminifera in Chalk and flint 351 115. Chalk-dust, chiefly composed of Foraminifera 355 116. Section of a Rotalia in flint 356 117. Rotalia in flint, with the fossilized body of the animal in the shell 358 118. Soft Bodies of Foraminifera extracted from the Chalk 359 119. Remains of Foraminifera in chalk and flint 361 120. Fossil Oyster, from the Chalk 374 121. Recent Bivalve Mollusc, showing the several parts of the shell and the animal 377 122. Turritellæ from Bracklesham 383 123. Shell-Conglomerate 385 124. Shell-Limestone, from the mouth of the Thames 386 125. Terebratula and Rhynchonella 388 126. Terebratula and Spirifer 390 127. Shells and Echinite from the Oolite and Lias 397 128. Spondylus spinosus in Chalk-flint 399 129. Inoceramus Cuvieri of the Chalk 401 130. Flint with fragments of Inoceramus perforated by Clionites 403 131. Unio Valdensis 415 132. Cyclas and Melanopsis 416 133. Fossil Shells of Gasteropoda 418 134. Polished Slab of Purbeck Marble 422 135. Univalves from the Chalk of Touraine 427 136. Univalves from the Mountain Limestone 428 137. Murchisonia bilineata 430 138. Sphærulites from the Chalk 431 139. Coprolites and Molluskite 432 THE MEDALS OF CREATION. ⎼⎼⎼⎼⎼◆⎼⎼⎼⎼⎼ INTRODUCTION. "Geology, in the magnitude and sublimity of the objects of which it treats, ranks next to Astronomy in the scale of the Sciences."--_Sir J. F. W. Herschel._