78 



materials of which consist exclusively of fragments of the surround- 

 ing rocks of old red sandstone. 



Two remarkable cases of a modern travertin, 5 and 8 miles E. 

 of Tenbury, are then cited, the one near the Spouthouse farm, the 

 other the Southstone Roch, both of which have been accumnlated 

 in narrow dells, which intersect transversely promontories of the 

 old red sandstone. At the former the travertin is associated 

 with much sandy marl. The latter is a cavernous rock of about 

 50 feet in height, and has a superficies of more than a quarter of 

 an acre, having on its surface a small house and garden. In both 

 cases the travertin incloses Helices of existing species, and has 

 been occasionally quarried for purposes of building and burning 

 to lime. 



These modern rocks are shown to have been formed by small 

 springs which issue from the calcareous or cornstone strata of 

 old red sandstone, and still encrust the leaves and grasses over 

 which they flow, a process which the author (judging from the 

 size of the rocks produced) supposes to have been in undisturbed 

 action during the whole period of history. 



Although no bowlders of foreign rocks are to be found in the di- 

 stricts above described, it is stated that on the northern confines of 

 the old red sandstone near Bridgenorth and Wenlock, there are many 

 large fragments of granite of various sorts. These are also seen in 

 abundance on the flanks of the Wrekin, but they are not to be 

 traced into the area of the old red sandstone, and as they are 

 entirely different from any of the Welsh rocks, the author refers 

 them to a northern region. In conclusion, it is suggested that the 

 superficial accumulation of the old red sandstone of Salop, Here- 

 fordshire, and Worcestershire may be referred to causes in opera- 

 tion during three epochs, which may hereafter be divided into other 

 distinct periods. 



1. To the currents caused by the elevation of the adjacent 

 transition rocks of Wales, when the associated volcanic action was 

 in full activity. 



2. To the subsequent degradation of the old red sandstone, 

 both when submarine and during its elevation, 



3. To various alluvial causes, of date posterior to the desicca- 

 tion of the old red sandstone, including the erosion of rivers, the 

 deposits of partial lakes, and the accumulation of travertin. 



April 9. — James Bryce, Jun., Esq., M.A., of Belfast j the Rev. 

 Edward Tagart, of Addison-road, Kensington; William Hopkins, 

 Esq., M.A., of St. Peter's College, Cambridge; the Rev. Christopher 

 Sykes, of Roop, near Hedon, Yorkshire ; and Sir Charles Mans- 

 field Clarke, Bart., M.D., of Saville-street, were elected Fellows of 

 this Society. 



A paper was first read, entitled " A short notice of the Coast 

 Section from Whitstable in Kent to the North Foreland in the same 

 County," by William Richardson, Esq., FG.S. 



The author commences his memoir by describing the changes 

 which the line of coast has undergone ; and he states that many parts 



