LIST OF WOODCUTS. 



PAGE. 



Helianthaster Jiliciformis, H. "Woodward, Devonian, Harbertonford 8 



A Fragment of the Upper Surface of Alveolites Selwt/nii, from the Corniferous 



Limestone 16 



Outline of Isle of Thanet, showing Distiibution of Ammonites along the 



Coast ... .. 17 



Cliff-sections from Kingsgate to Pegwell 18 



Diagrammatic Sketch of part of Wexford Coast 49 



Sketch-Map of the Bay and Shoals between Cahore and Greenore Points, Co. 



Wexford 50 



Alveolites distans, ivom. the CoTniierous'LimestoTie ... 54 



Diagram to Illustrate the Formation of Mountains 60 



Olathropora infertexta, 'Nich., irom the CormievouB Limestone 125 



Teeth of 5«/5o(?2<s compared with Teeth of Cladodus 166 



Diagrammatic Section, showing the relations between an ancient Cliff of 



Glacial Drift, and the re-arranged or Glacialoid Drift with the associated 



Shelly Drifts 168 



A few of the Calicos of Columnopora crihriformis 254 



Section across Antarctic Ice-cap 307 



Diagram of the Longitudinal Framework of the under-side of the left elytron 



of Gryllacris Ungeri, Heer 339 



Diagrams to Explain the Physical Cause of the Submergence and Emergence 



of the Land during the Glacial Epoch 346 



Sketch-Map of the Neighbourhood of Cairo 354 



An Approximate Section along the line A — B on Map of Cairo 356 



Plan of the Great Moccattam Quarries behind the Citadel, Cairo 356 



Section seen near Givendale Church, Eipon 363 



General Section to show the Position of the Thames Valley Beds relatively to 



the Glacial Beds of the Middlesex and Essex Heights 394 



Section exhibited by the IJphall Brickfield 394 



Section from Crayford Hill, Kent, to Hangman's Wood, near Grays, Essex ... 396 



Cell in Porphyry lined with Chlorite and filled with Calcite 451 



Group of Orthoclase Crystals imbedded in the Felspathic matrix, darkened 



by grains of Magnetite 452 



Cavity filled with Chlorite showing Cellular Structure 452 



Portion of Polished Surface of the Porphyry, showing the arrangement of the 



Orthose Crystals 453 



Section showing the "average thickness of the Metamorphic Eocks on the N. 



and S. of the Anticlinal Curve, larconnaught 456 



Sections of Upper Silurian Eocks at Salrock, Gowlaun,and Bundoragh 456 



Section of Stromboli (showing relative heights) 530 



Page-woodcut of Stromboli Viewed from the North (after Abich) 532 



Plan of the Island of Stromboli 539 



