170 ON A PORTION OF A RAISED BEACH, ETC. 



as a raised beach, but refers to the sea-worn surface of the lime- 

 stone at one place. (^"^ 



My best thanks are due to Mr. James, manager of Fulwell 

 Lime-Works, for giving me permission to study the section at 

 my convenience, and also to Mr. Blythe for examining the de- 

 posit on some occasions with me. 



REFERE^TCES. 



1. Pi'ofessor Lebour's " Geology of Northumberland and Dur- 



ham," p. 19. 



2. I^atural History Transactions of IS'orthumberland, Durham, 



and Kewcastle-upon-Tyne, 1877-9, p. 364. 



3. Mr. R. Howse on " Old Sea-caves and Sea-beach " at Whit- 



burn, in the same Transactions, 1877-9, p. 361. 



4. See Geological Drift Map, jSTew Series, No. 21. 



5. Mr. J. W. liirkby ''On the occurrence of Sand-Pipes in 



the Magnesian Limestone of Durham." The Geologist, 

 1860, p. 295. 



6. Section in Mr. .T. W. Kirkby's Paper. Geologist, 1860, 



p. 294. 



7. Professor Lebour's " Geology of Northumberland and Dur- 



ham," p. 19. 



8. Section in Mr. J. W. Kirkby's Paper. Geologist, 1860, 



p. 329. 



9. See Geological Drift Map, New Series, No. 21. 

 10. Geologist, 1860, p. 295. 



