CONTENTS. 



The Aeronauts of the Solenhofen Age. By the Editob. ( With a Plate) . . 1 

 On Didymodon Vauclusianum. By C. C. Blake, Esq. ...... 8 



On the Age of the Dartmoor Granites. By W. Pengelly, Esq 11 



On the Formation of Limestone Bands. By Bev. J. D. La Touche. With a Note 



by J. W. Saltee, Esq., E.G.S., A.L.S. 20 



On the Geological Evidences of Horses in the New World. By C. C. Blake, Esq. 



(With a Plate) 24 



Analysis of the Bed Chalk of Hunstanton, on the Coast of Norfolk. By R. Calveet 



Claeke, Esq 29 



Correspondence : — 



Ages of Mineral Veins ............ 29 



Druid Sandstone . . .30 



Restoration of Pteraspis 31 



Proceedings of Geological Societies : — 



Greological Society 31 



Royal Society . . . . , . .32 



Manchester Philosophical Society . . .35 



Notes and Queries : — 



Obituary . . . . . . • . . . . . .35 



Deep Grold Diggings at Melbourne . . 36 



Canadian Petroleum - 36 



Iron formed by Animalcules 36 



Reviews : — 



Carte Agronomique des Environs de Paris. By M. Delesse . . . .37 

 On Animal Tracks and Crustacean Remains in the Lower Dyas, or in the Lower 



Permian Sandstones of the Strata of the Higher Elbe. By Dr. H. B. Greinitz . 38 

 Observations on the terms " Permian" and " Dyas." By Jules Marcou . . 39 

 Etude sur l'Etage Kimmeridien dans les Environs de Montbeliard. By Dr. C. 



Contejean .39 



CORRESPONDENTS. 



Communications received from C. G. Blake, Esq. ; P. S., Whiteinch ; A. Tatloe, 

 Esq., Edinburgh ; Rev. H. Weight, Thuxton ; R. Calteet Clapham, Esq., Walker 

 Alkali Works, Newcastle. 



BOOKS RECESVED. 



Maps and Publications of the Austrian Geological Survey. 

 The Canadian Naturalist. 



Observations on the Terms Permian and Dyas. By M. Jules Mabcotj. 



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