REVIEWS. 



407 



more or less fluid of those miDcral substances which were originally in a molten 

 condition. 



In the Greolpgical section th'^ pnpers read were a " Notice of the Occurrence of 

 a Boulder of Granite iu the Vvliite Chalk of Croydon,"* by R. Godwin- Austen. 

 "On the Carboniferous Limestone Fossils from the County of Limerick, collected 

 by the Irish Geological Survey ; " and a description of a "New Fossil Fern from 

 the Coal-Measures near Glin, Co. Limerick," by AV. H. Bailey. " On the Drift of 

 West Galway and the Eastern parts of Mayo," by J. Birmingham. " On certain 

 alterations of Level on the Sea Coast of part of the County of Waterford," by Dr. 

 Clarke. In this paper Dr. Clarke described an ancient sea-beach of the coast of 

 the county of Waterford, extending about two and a half miles, and attaining at 

 one spot an elevation of sixty feet. The shells found on it were exclusively those 

 of the Cardium edule. " On the Geology of the Neighbourhood of Tralee," by F. J. 

 Foot, of the Geological Survey." " On the Relations of the Rocks at or below the 

 Base of the Carboniferous Series of Ireland," by Sir Richard Griffith. " Notes 

 from the Barbary Coast, with Fossils," by G. F. Habershon. " On the Geology 

 of Caldbeck Fells and the Lower Sedimentary Rocks of Cumberland, and " On the 

 Jointing and Dolomitization of the Lower Carboniferous Limestone in the 

 neighbourhood of Cork," and " On the Records of a Triassic Shore," by Prof. 

 Harkness. " On a Model illustrative of Slaty Cleavage, "-and " On Fossil Stems 

 allied to Stigmaria, from the Upper Beds of the Old Red Sandstone of Hook Point, 

 Co. Wexford," by the Rev. Prof Haughton. " On the existence of Forces 

 capable of changing the Sea-level during diflferent Geological Epochs," by Prof. 

 Hennessy. " On the Conductivity of various Substances of Heat," by Wm. 

 Hopkins. " On the Geological Structure of the Dingle Promontory, Co. Kerry," by 

 J. Beete Jukes and G. V. Du Noyer. " Notes on the Old Red Sandstone of South 

 Wales," by J. Beete Jukes. " On the Geology of Lambay Island," by Messrs. 

 Jukes and Du Noyer. " On the Valentia Trap District," by C. H. Kinahan. " On 

 the Zoological Relations on the Cambrian Rocks of Bray Head and Howth," by 

 Prof. T. R Kinahan. In the Cambrian rocks of these two localities traces of 

 organic life of three types at least are abundant. 1st, Zoophytic, Oldhamia, of 

 two species, occurring abundantly at Bray, Co. Wicklow, and sparingly at Howth, 

 Co. Dublin ; 2nd, Annelidan, tracks of wandering worms {arenicolites), arranged in 

 the same direction as the bedding, found both at Howth and Bray. Worm- 

 burrows, vertical to the bedding, and arranged in pairs similar to those of the 

 Longmynd. Worm-tubes, of a new type, for which the name of Histioderma 

 Hibernica was proposed. These are regarded as the membranous tubes of a 

 tentaculated worm which inhabited a trumpet-shaped burrow, bent up at the 

 lower end, and they occur abundantly at Bray Head, in a Cambrian sea-beach. 

 3rd, MoUuscan (?); markings precisely similar to those so-called in the 

 carboniferous slates. These are from Bray. 



The worm-tracks from Howth do not appear to be identical with those of Bray, 

 all the fossils of which appear to have been deposited in shallow, quiet water. 

 " On the relation between the cleavage of Minerals and the cleavage of Rocks," by 

 Prof King. " On a Section across Slieve-na-Muck, Co. Tipperary," by T. 0. 

 Kelly. " On the Genus Woodocrinus " by L. de Koninck and Edw. Wood. 

 " Notice of the Recent Advances of Palceontological Discovery in Tuscany," by 

 Prof. Car. G Meneghini. "The Quartz-rocks, Crystalline Limestones, and 

 Micaceous Schists of the North- Western Highlands of Scotland, proved to be of 

 Lower Silurian age through the Discoveries of Mr. C Peach,' ' by Sir Rod. Murchi- 

 son. " Note on the Fossils from Durness," by J. W. Salter. 



This discovery, by Mr. Peach, of Silurian fossils in geodes and fragments of 

 unchanged Silurian rocks, entangled and enclosed in altered or metamorphosed 

 rocks, has formed the key to the comprehension of the age and relations of vast 

 accumulations of rock-masses, the age of which were hitherto undeterminable, 

 especially of those of the north-west Highlands of Scotland. 



" On the junction of the Mica-slates and granite, Killiney Hill, Dublin," by 



* On this subject Mr. Godwin- Austen lias c immunicated an elaborate memoir to the Geological 

 Society ; see the Society's Quarterly Journal for August, 1858. 



