TABLE OF CONTENTS. V 



Page 



Iddings, Prof. J. P. Extrusive and Intrusive Igneous Kocks as 



Products of Magmatic Differentiation. (Plate XXIX.) 606 



Jukes-Browne, A. J., Esq., and W. Hill, Esq. A Delimitation 

 of the Cenomauian : — being- a Comparison of the Corresponding 

 Beds in South-western England and Western France. (Place V.) 99 



Lake, Philip, Esq. The British Silurian Species of Acidaspis. 



(Plates VII. & VIII.) 235 



-, and S. H. Keynolds, Esq. The Lingula-Fl&gs and Igneous 



Rocks of the Neighbourhood of Dolgellj. (Plate XXIV.) oil 



Lamplugh, G. W., Esq. On the Speeton Series in Yorkshire and 



Lincolnshire 179 



Mare,, J. E., Esq. Additional Notes on the Tarns of Lakeland . . 12 



Metcalfe, A. T., Esq. The Gypsum Deposits of Nottinghamshire 



and Derbyshire. (Abstract.) 461 



Pavlow, Prof. A. P. On the Classification of the Strata between 



the Kimeridgian and Aptian. (Plate XXV11.) 512 



Preller, Dr. C. S. du Riche. Glacial Deposits, Preglacial Val- 

 leys, and Interglacial Lake-formations in Subaipine Switzerland. 556 



Reed, F. R. Cowper, Esq. The Fauna of the Keisley Limestone. 



—Part I. (Plates XX. & XXI.) 407 



Reld, Clement, Esq. The Eocene Deposits of Dorset 490 



Reynolds, S. H., Esq., and Philip Lake, Esq. The Linyula-Fiags 

 and Igneous Rocks of the Neighbourhood of Dolgelly. (Plate 

 XXIV.) 511 



, and C. I. Gardiner, Esq. The Kildare Inlier. (Plate 



XXVIII.) 587 



Rutley, Frank, Esq. On the Alteration of Certain Basic Eruptive 



Rocks from Brent Tor, Devon. (Abstract.) 66 



Skeat, Miss E. G., and Miss M. C. Crospield. On the Geology 



of the Neighbourhood of Carmarthen. (Plates XXV. & XXVI, ) 523 



Strahan, A., Esq. On a Phosphatic Chalk with Holaster planus 

 at Lewes. With an Appendix on the Foraminifera and Ostra- 

 coda. By F. Chapman, Esq « 463 



. On Submerged Land-surfaces at Barry, Glamorganshire. 



With Notes on the Fauna and Flora. By Clement Reid, Esq. 

 And an Appendix on the Microzoa. By Prof. T. R. Jones 

 and F. Chapman, Esq 474 



Talmage, Prof. J. E. Notes concerning certain Linear Marks in 



a Sedimentary Rock. (Abstract.) 461 



Wilson, Edward, Esq., and S. S. Buckman, Esq. Dundry Hill : 

 its Upper Portion, or the Beds marked as Inferior Oolite (g 5) 

 in the Maps of the Geological Survey 669 



