Reviews — Dixon's Geology of Sussex. 521 



a large supply of mussels. This bed in my opinion was like the 

 ' Bridlington Crag ' at the base of the ' Purple ' clay. The existence 

 of fragments of shells in the representative of the 'Purple' clay 

 along the shore as far north as Whitby, and pointed out by Mr. 

 Lamplugh, is most remarkable, and suggests a wide extension of 

 such shells antecedent to the deposition of the ' Purple ' clay, and 

 he will by further researches at Speeton, Dimlington and other 

 localities, be able hereafter to throw additional light on a subject to 

 which his jpresent paper has given a new and special interest. 



nsroTioiES oip iMZZEDynoiias. 



On the Thermal Sources op Carlsbad, North-west Bohemia. 

 By F. von Hochstetter and F. Teller. (Proceedings Imper. 

 Acad. Vienna, March 14, 1878.) 



THE recent demolition of a house has led to the discovery of a 

 remarkable geological fact— the existence of a peculiar zone, 

 about fifteen to twenty metres broad, between the steep pyritose 

 granite, with frequent veins of hornstone, on which the Town Tower 

 stands, and the similarly pyritiferous granite cropping out beneath 

 the terrace of the Schlossberg. This zone is filled up with a breccia 

 of granite and hornstone, with thermal waters circulating every- 

 where within its fissures, and depositing on their inner surfaces 

 crusts and veinules of aragonite, some of them 1^ metre thick. 

 The temperature of the whole zone is high, on account of the warm 

 water and steam issuing out of every cleft and crevice. 



The situation of this breccia band, as also the direction of the 

 A'^eins of hornstone in the granite, leads to the conclusion that this 

 thermal zone extends northwestward to the ScUoss-Brunnen, and 

 southeastward to the Sprudel Eegion proper, in the bed of the 

 Eiver Tepl. Thus the views announced in 1856 by Professor von 

 Hochstetter, who affirmed that the chief Sprudel fissure lies in a 

 N.W. — S.E. direction, have again been confirmed. Count M. 



laSVIE^ATS. 



The Geology of Sussex; or the Geology and Fossils of the 

 Tertiary and Cretaceous Formations op Sussex. By the 

 late Frederick Dixon, Esq., F.G.S. New Edition. Eevised 

 and Augmented by T. Eupert Jones, F.E.S., F.G.S., etc.. 



Professor of Geology, Staff College, Sandhurst; aided by Professor Owen, 

 C.B. ; Sir Philip Grey-Egerton. Bart., M.P. ; and Messrs. Carruthers, 

 Davidson, Etheridge, John Evans, D.C.L., John Morris, Newton, 



SOLLAS, TOPLEY, B. H. WiLLETT, H. WiLLETT, H. WoODWARD, T. WRIGHT, 



M.D., and other scientific friends. 



4to. pp. xxiv. and 470, Illustrated by 64 Plates and 74 

 Woodcuts. Brighton : William J. Smith, 1878. 



IN the early half of this century County Histories were greatly in 

 vogue, and as geologists are not altogether free from a tendency 

 to follow the prevailing fashion of the time, we find such books 

 appearing as "Phillips's Geolog}'- of Yorkshire;" "Woodward's 

 Geology of Norfolk;" "Mantell's Geology of Sussex;" " MantelFs 



