EXPLANATION OF THE PLATES. 



PLATES I. & U. 



Illustrate Mr. Phillips's paper on a Group of Slate Rocks between the rivers Lune 

 and Wharfe. 



Plate I. 



The sections contained in this Plate are fully explained in the paper, and in the 

 description accompanying- each. 



Plate IL 

 Geological Map of part of Craven, included between the rivers Lune and Wharfe: p. 5. 



PLATE in. 



Illustrates Professor Sedgwick and Mr. Murchison's paper on Arrau : p. 24. 



PLATES IV. V. VI. VII. VIII. IX. X. XI. XII. 

 Illustrate Professor Sedgwick's paper on the Magnesian Limestone, &c. 



Plate IV. 



Nos. 1. 2. ,". & 4. Geological Maps showing the range of the formation through 



certain parts of Yorkshiic : pp. 4.5. 5S. 34. 93. &c. 

 Figs. 1. 2. 3. Sections showing great dislocations : pp. 113. 114. &c. 



Plate V. 



Fig. 1. Section from the Kirkby coal-pits to the escarpment of the magnesian lime- 

 stone : pp. 56.57.80.81. 



