EXPLANATION OF THE PLATES. 



PLATES 1. & n. 



Illustrate Mr. Strangways' paper on the geology of Russia, Art. I. page J, i&c. of 

 the present volume. 



Plate I. 



Fig. 1. represents veins of hornblende in limestone, near the western extremity of 

 the island of Pargas : described pages 3 and 4. 



Fig. 2. Map of the falls of Msta, at the village of Ouglova, near Borovichy, in the 

 Valday hills : pages 13, 14, 16. 



Fig. 3. View from the hill of Simbirsk on the Volga, page 30 — showing the relative 

 situation of the white marl, sand, and black clay. The rocks in the distance are 

 the white central limestone, forming the high steppe of Pallas, and marked H on 

 the map, Plate II. 



Plate II. 



A sketch of a geological map of European Russia. To facilitate reference, a letter is 

 annexed to each colour in the table on the margin of the plate ; and the several 

 portions of the map in which the same rocks occur are denoted by corresponding 

 letters as well as colours. 



PLATES III. IV. V. VI. VII. & VIII. 



Illustrate Mr. De la Beche's paper on the south coast of England, Art. II. 

 page 40, &c. 



Plate III. 



Fig. 1. represents the remains of a crustaceous animal, found in compact nodules of 



the green sand, in the vicinity of Lyme : p. 42. 

 Fig. 2. The back of a singular fossil crab, from the same place, found in the green 



sand : p. 42. 

 Figs. 3, 4, & 5. The Echinoniius lampas, a new species of Echinite, from the 



green sand near Lyme, mentioned page 42. Fig. 3. the upper surface : fig. 4. a 



side view : fig. 5. the under-side of the fossil. 



vol. VI. 2 A 



