EXPLANATION OF THE PLATES, 



Plate 1. Geological map of part of North Wales, to illustrate a memoir 



by Professor Sedgwick - - - - to face p. 5 



2. Geological map of Nova Scotia by Dr. A. Gesner, with a 



portion of the district from Mr. Dawson's survey; and a map 

 of Cape Breton, coloured from the surveys of Mr. Dawson 

 and Mr. Brown - - - - - -23 



3. Geological map of the country bordering the Gulf of Smyrna 



to illustrate a memoir by Lieutenant Spratt - - - 156 



4. Mouth of Hybodus basanus • - - - - 198 



5. Cyclobatis oligodactylies - - - - . 225 



1 . The fossil of its natural size. 



2. Part of the jaw considerably magnified. 



*6, 7, 8. Lower Greensand fossils, plates i., ii., iii. - end 



9. Map of part of Tuscany, coloured geologically, to illustrate 



a memoir by Mr. Hamilton - 273 



10. Geological map of part of Nova Scotia by Mr. Dawson, to 



illustrate two memoirs by Mr. Dawson - 322 



11. Route through the Taurus and Antitaurus, to illustrate 



Mr. Smyth's memoir on the geology of the Taurus - - 340 



*12, 13. Lower Greensand fossils, plates iv., v. - - - end 



14. Fossils from Perim Island, to illustrate Dr. Falconer's memoir 



on those fossils --_-__ 372 



The binder shoidd be instructed to place these Jive plates of Lower Greensand 

 fossils together at the end of the volume, with the page of description corresponding 

 to them, immediately before the Alphabetical Index. 



