14 
Illustrations. 
PAGE 
30. Thinnfeldia odontopteroides, from Hawkesbury 
Sandstone ... ... ... ... ... 121 
31. Section Blue Mountains to Sydney 124 
32. Columnar Structure in Hawkesbury Sandstone, 
Bondi ... ... ... ... 127 
33. Myriolepis Clarkei, near Gosford ... ... 135 
34. Head of Mastodonsaurus ,,, ... ... 140 
35. Skull of Mastodonsaurus ... ... ... 143 
36. Railway Cutting, Gosford ... ... ... 146 
37. Section of a Labyrinthodont’s Tooth, Magnified 150 
38. Permo-Carboniferous Fossils, Newcastle Beds ... 155 
39. Labyrintiiodont Restored ... .. ... 159 
40. Rhacopterts Inasquilatera, Stroud, N.S.W. ... 161 
41. Macrozamia, a Living Cycad ... ... ... 166 
42. Tasniopteris Daintreii ... ... ... ... 170 
43. Alethopteris Australis, Clarence River ... 173 
44. Succession of Coal-bearing Rocks... 176 
45. Sketch Section at Capertee ... ... ... 179 
46. Sketch Section at Bundanoon ... ... ... 179 
47. Sketch Section at Long Reef, near Manly ... 181 
48. Sketch Section under Sydney ... ... ... 181 
49. Columnar Basalt, Kiama ... ... ... 185 
50. PROTORETOrORA AMPLA, RAYMOND TERRACE AND 
Harper’s Hill ... ... ... ... 193 
51. Sptrtfer Tasmaniensis, Raymond Terrace and 
Nowra ... ... ... ... ... 195 
52. Platyschisma ocula, Harper’s Hill ... ... 197 
53. Leaf Scars of Lepidodendron ... ... ... 201 
54. Aviculopecten lim^efokmis, Wollongong ... 203 
55. The Three Sisters, Katoomba ... ... ... 207 
56. Spirifera disjuncta, Mt. Lambie ... ... 212 
57. Rhynchonella pleurodon, Mt. Lambie ... ... 213 
58. Atrypa reticularis ... ... ... ... 213 
59. Murchisonia turris, Yass ... ... ... 214 
60. Dip, Strike and Outcrop ... ... 217 
61. Bending of Rocks by lateral compression ... 218 
62. Highly inclined Silurian Slates ... ... 22] 
