THE 



PHILOSOPHICAL MAGAZINE 



AND 



ANNALS OF PHILOSOPHY. 



[NEW SERIES.] 



DECEMBER 1828. 



LXVII. Geological Observations made in the Neighbourhood 

 of Ferrybridge, in the Years 1826-1828. By John Phil- 

 lips, Esq. F.G.S. Honorary Member of the Philosophical 

 Societies of Yorkshire, Leeds, and Hull *. 

 [With a Plate.] 

 r |^WO journeys to Ferrybridge, in company with the Rev. 

 ■*■ W. Bulmer, have furnished me with some observations on 

 the geology of that neighbourhood, which but for many en- 

 gagements I should some time since have had the honour of 

 presenting to the Society. Several years have passed since I 

 examined the range of magnesian limestone from Doncaster to 

 Ferrybridge, and possessed myself of the general facts relating 

 to the composition and succession of the several beds asso- 

 ciated with it. My attention was again awakened to the sub- 

 ject by the freshwater shells and petrified wood found by the 

 Rev. Wra. Richardson, during the excavation of the new canal 

 through the alluvial soil in the valley of the Aire. Mr. Rich- 

 ardson obligingly offered to satisfy my curiosity on this sub- 

 ject by conducting me to the spot ; and accordingly, in May 

 1826, Mr. Bulmer and myself availed ourselves of his friendly 

 guidance. The same active inquirer furnished us occasion 

 tor another interesting visit in April 1828, by collecting some 

 bones of antediluvian quadrupeds from a limestone quarry at 

 Brotherton. The results of these examinations I now beg to 

 offer to the consideration of the Society. Illustrative speci- 

 mens may be consulted in the cabinets of the Institution. 



The deposits in the neighbourhood of Ferrybridge lie in 

 the following order : 

 1. Alluvial deposit of silt or fine clay in the valley of the Aire. 



* Read to the Yorkshire Philosophical Society, Nov. 4, 1828; and com- 

 municated hy the Author. 



New Series. Vol. 4. No. 24. Dec. 1828. S F 2. Di- 



