Fig. Page 1. Ice Minaret 14 2. Diagram of an angular reflector 16 3, 4. Boats' sails inverted by Atmospheric Refraction 35 5. Wave-like forms on the Mer de Glace 43 6. Glacier Table 44 7. Tributaries of the Mer de Glace 53 8. Magnetic Boulder of the Riffelhorn 143 9, 10, 11, 12. Luminous Trees projected against the sky at sunrise 180, 181 13. Snow on the Pines 201 14, 15. Snow Crystals 214 16. Chasing produced by waves 233 17. Diagram explanatory of Interference 234 18. Interference Spectra, produced by Diffraction _To face_ 235 19. Moraines of the Mer de Glace " 264 20. Typical section of a glacier Table 266 21. Locus of the Point of Maximum Motion 286 22. Inclinations of ice cascade of the Glacier des Bois 313 23. Inclinations of Mer de Glace above l'Angle 314 24. Fantastic Mass of ice 316 25. Diagram explanatory of the mechanical origin of Crevasses 318 26. Diagram showing the line of Greatest Strain 319 27A, B. Section and Plan of a portion of the Lower Grindelwald Glacier 322 28. Diagram illustrating the crevassing of Convex Sides of glacier 323 29. Diagram illustrating test of viscosity 326 30, 31, 32, 33. Moulds used in experiments with ice 346-348 34. Liquid Flowers in lake ice 355 35. Dirt-bands of the Mer de Glace, as seen from a point near the Flegere _To face_ 367 36. Ditto, as seen from les Charmoz " 368 37. Ditto, as seen from the Cleft Station, Trelaporte " 369 38. Plan of Dirt-bands taken from Johnson's 'Physical Atlas' 374 39. Veined Structure on the walls of crevasses 381 40. Figure explanatory of the Marginal Structure 383 41. Plan of part of ice-fall, and of glacier below it (Glacier of the Rhone) 386 42. Section of ditto 386 43. Figure explanatory of Longitudinal Structure 388 44.