THE 



GEOLOGICAL MAGAZINE. 



VOL. -VX. 186 9. 



TO OUR GEOLOGICAL FEIENDS AND SUPPORTERS. 



Our Sixth Volume is now completed, and we have again the 

 pleasant task of thanking our numerous friends for having continued 

 to support us ; may the numher of their names steadily increase, so 

 shall our seventh volume he even better than its predecessor. 



Especially are our thanks due to those of our friends who have 

 not only suj)ported the Magazine as Subscribers, but who have also 

 contributed Original Articles, Notices, and Eeviews to its pages. 



The following new contributors have been added to our last year's 

 list :— Dr. W. G. Atherstone, F.G.S. ; Messrs, Samuel Allport, F.G.S. ; 

 H. W. Bristow, F.E.S., F.G.S. ; Eev, T. G. Bonney, M.A., F.G.S. ; 

 Messrs. James CroU ; J. E. Dakyns, M.A. ; the Earl of Enniskillen, 

 D.C.L., F.E.S. ; Sir Philip de Malpas Grey Egerton, Bart., M.P., 

 F.E.S. ; Prof. Harkness, F.E.S., F.G.S. ; Messrs. Henry Hicks ; G. 

 A. Lebour, F.E.G.S. ; E. Lightbody, F.G.S. ; Prof. S. Loven, Stock- 

 holm ; Dr. J. G. 0. Linnarsson ; Mr. J. A. Mahony ; Prof. Owen, 

 F.E.S. ; Messrs. E. Eussell ; J. Eofe, F.G.S. ; H. C. Sorby, F.E.S., 

 F.G.S. ; Eev. J. D. La Touche ; Messrs. T. Thompson ; Ealph Tate,. 

 A.L.S., F.G.S. ; J. Clifton Ward, F.G.S. ; W. Whitaker, B.A. (Lend.), 

 F.G.S. ; W. H. S. Westropp, M.E.I. A. 



Of our last year's contributors the following gentlemen have also 

 added to this our sixth Volume, namely : — Messrs. T. P. Barkas' 

 F.G.S. ; W. Carruthers, F.L.S., F.G.S. ; Thos. Davidson, F.E.S., 

 F.G.S. ; C. E. Eance, F.G.S. ; E. Etheridge, F'.E.S.E., F.G.S. ; 

 James Geikie ; J. E. Gregory ; Dr. T. Sterry Hunt, F.E.S. ; Capt. 

 F. W. Hutton, F.G.S.; Prof. T. Eupert Jones, F.G.S.; Messrs. G. 

 H. Kinahan, F.E.G.S.I. : E. Eay Lankester, B.A. ; J. Logan Lobley, 

 F.G.S. ; Dr. C. Liitken : Messrs. D. Mackintosh, F.G.S ; G. Maw, 

 F.L. and G.S ; C. J. A. Meyer ; Prof. J. Morris, F.G.S. ; Dr. H. A. 



