CONTENTS. IX 



Page 

 Mr. John Smyth, Jim. on an Apparatus for the Determination of the Ozone 

 in the Atmosphere, and Experiments made therewith by means of the Aspi- 

 rator 37 



Dr. Aug. Yoelcker on Phosphatic Deposits recently discovered in North 



Wales 37 



on the Composition of a Marine-Boiler Incrustation. ... 39 



Dr. J. E. De Vrij on the Possibility of Manufacturing Neroli in the British 

 Colonies 39 



— on the Botatory Power of several Essential Oils 40 



Mr. W. Willis on the Aniline Process in Photography 40 



Dr. T. Wood on the New Formulae, with reference to Schools and Examina- 

 tions 40 



GEOLOGY. 



Address by Sir Bodeiiick I. Murchison, K.C.B., G.C.St.A., D.C.L., LL.D., 

 F.B.S., V.P.G.S., Director-General of the Geological Survey, and President 

 of the Boyal Geographical Society, President of the Section 41 



Mr. S. Bailey on the Economic Value of the various Measures of Coal and 

 Ironstone in the South Staffordshire Coal Field 48 



Bev. P. B. Bhodie on the Fossiliferous Beds of the New Bed Sandstone 

 (Upper and Lower Keuper) in Warwickshire 48 



on a Section of Lower Lias at Harbury, near Leamington 48 



on Two New Species of Corals in the Lias of Warwick- 

 shire 49 



's Remarks on the Drift in part of Warwickshire, and on 



the Evidence of Glacial Action which it affords 49 



Mr. L. P. Capewell on the Organic Bemains of the Coal-Measures 49 



Principal J. W. Dawson on the Fossil Plants of the Post-Pliocene Deposits 

 of Canada in Connexion with the Climate of the Period, and the Formation 

 of Boulder Clay 50 



■ The Succession of Palaeozoic Floras in North Ame- 

 rica 50 



Mr. E. C. H. Day on the Lower Lias of Lyme Begis 51 



on a Head of Hijbodus Delabeckei 51 



on the History of the Jurassic Seas, as evidenced by the 



History of the first Liassic Sea 51 



M. Geheimrath H. von Dechen and Professor E. Romer on the Large 

 Prussian Geological Map of the Bhenish Provinces and Westphalia 51 



Mr. David Forbes on the Existence of Gold-bearing Eruptive Bocks in South 

 America which have made their appearance at two very distinct Geological 

 periods 52 



on the Igneous Bocks of South Staffordshire 53 



Rev. W. Fox on a New Wealden Saurian named Polacanthus 56 



M. W. von Haidinger on the Progress of the Imperial Geological Institute 

 of the Austrian Empire 56 



Professor Harkness and H. Nicholson's Additional Observations on the 

 Geology of the Lake Country 57 



— on the Silurian Bocks of the Isle 



of Man 58 



