DESCRIPTION OF THE PLATES, 



PLATE I. 



'Map and Sections of the Isle of Man, in illustration of Dr. Eerger's paper. 



Page 29. 

 In the upper Section a b is the upper limit of arable Land at the height of 



937 feet above the sea. 

 c d is the lower limit of Turbary ground, at the height 



of 1S78 feet above the sea. 

 e f is the lower limit of Turbary ground, in another 

 part of the island, at the height of 692 feet above 

 the pea. 

 The Figures in the Map refer to the names of the Hills. — Vide Table, beginning 



at page 62. 



PLATE 2, 



Fig. I. Plan of the Vitrified Fort of Dun Mac Sniochain, descrihed by Dr. 



MacCuUoch, p. 257. 

 Fig. 2, 3. Plan and Section of the Coal-field at Bradford, near Manchester, 



described by Mr. Bakewell, p. 282. 



PLATES 3, 4, 5. 



In illustration of Dr. Mac Culloch'^s paper on the Granite Tors of Cornwall, p. 66. 



Plate 3. The Logging Rock at the Land's End, as it appeared in 1796, 



described, p. 67. 

 Plate 4. The Cheese-wring near Liskeard, described, p. G9. 

 Plate 5. The Vixen Tor, on Dartmoor, described, p. 70. 



PLATES 6, 7, 8. 



In illnstration of Mr. William Phillips's paper on the Veins of Cornwall, p. 110, 



Plate 6. Fig. 1. Ground Plan of Veins in Tol Carn, Huel Jewel, and Huel 

 Damsel Mines, p. 135. 



2. Slide, p. 136. 



3. Feeder, p. 138. 



4. Course Flucan, p. 126. 



5. Leader, p. 138. 



6. Ground Plan of Veins in Huel Alfred, p. 157. 



