EXPLANATION OF THE PLATES. 



Fig. 2. Coast section from Tynemouth to Cullercoats in Northumberland : p. 62. 

 Fig. 3. Section through the Eppleton, Hetton, and Ellemore coal-pits in the county 



of Durham : pp. 60. 61. 72. 73. 112. 

 Fio\ 4. A. B. Concretionary structure of the Magnesian Limestone: p. 97. 



Plate VL 



Fig. 1. Fault traversing the cliff at Tynemouth : p. 62. 



Fi<^s. 2. 3. 4. 5. & 6. Sections showing the occasional want of conformity between the 



lower red sandstone and the magnesian limestone : p. 74. 

 Figs. 2. 3. Bramham Moor : pp. 73. 74. HI. 

 Figs. 4. 5. Quarries west of North Deighton : p. 74. 

 Fig. 6, Position of the magnesian limestone on the beds of the lower red sandstone in 



the left bank of the Nid below Knaresborough : p. 71. 



Plate VII. 



Fig. 1. Section at Clack's Heugh on the south bank of the Wear : pp. 71. 73. 



Fig. 2. Quarry at West Bolden : p. 78. 



Fig. 3. Concretions of crystalline limestone in the magnesian limestone quarry near 

 Ripon : p. 89. 



Fig. 4. Cellular magnesian limestone resting on marl-slate near North-point, east of 

 Durham : p. 79. 



Fig. 5. Masses of magnesian limestone on the coast of Durham, south of Castle Eden- 

 dean : p. 91. 



Fig. 6. Junction of the upper beds of magnesian limestone with the marls of the new 

 red sandstone near Knottingley : pp. 103. 105. 1 10. 



Plate VIII. 



Fig. 1. Palaeothrissum magnum : pp. 77. 117. 



Fig. 9. Scales of ditto enlarged. 



Fig. 3. Fragment of a fossil fish; species not ascertained : p. 117. 



Fig. 4:. Scales of ditto enlarged. 



Plate IX. 



Fig. 1. Palffiothrissum elegans, S, N. : p. 117. 

 Fig. 2. Palaeothrissum macrocephalum : p. 117. 

 Fig. 3. Operculum of a large fish : p. 118. 



Plate X. 



Fig.l. Fossil fish; not determined : p. 118. 



Figs. 2. 3. represent a part of the scales enlarged : p. 118. 



