Correspondence. — Dr. T. Ogier Ward. 425 



House, which, with its extensive winter promenade and spacious 

 museum, was thrown open to a large company of visitors, to whom the 

 members of the Association described Dr. Grindrod's palEeontoIogical 

 treasures. Later in the evening, the Vicar of Malvern in the chair, 

 geological addresses were delivered by Mr. M. Moggridge, F.G.S., 

 of Mentone, and Mr. J. Logan Lobley, Hon. Sec. — Saturday, July 

 26. — On the morning of the concluding day the G-eological Museum 

 in Malvern College was insj^ected, and afterwards carriages were 

 taken to the Herefordshire Beacon, which was ascended, and its 

 southern extension traversed to Eastnor Park. A lane section, 

 near the Somers Obelisk, of Upper Llandovery, yielding Ctenodonta 

 Eastnori. and Lingidella parallela, and L. crumena, occupied attention 

 for some time; and then skirting Midsummer Hill, exposures of 

 Holly Bush Sandstone and the "Black Shales" were reached and 

 carefully examined. At a boss of igneous rock not far distant, the 

 members took leave of their director, and cordially thanked him 

 for his exertions for the success of the week's proceedings. During 

 the evening the members departed from Malvern for their several 

 homes. 



ooi2,ia:Esi=on^x)EiNroE!. 



THE SARSEN STONES. 



Sir, — ^I have just read the Eev. J. Adams's paper on " Sarsen 

 Stones," and I think I can throw some light on their origin. 



I had seen portions of "Grey Wethers" and of Stonehenge before 

 I left England, and when I lived at St. Germains I remarked in the 

 Museum two whetstones for flint- weapons made of similar fawn- 

 coloured siliceous sandstone. A similar stone is now quarried near 

 the town, and in the quarry I found a detached mass of Pudding- 

 stone, with nodules of flint three by two inches, larger, much larger 

 than any I have seen in the English Pudding-stone. Between St. 

 Germains and Grignon, still within the forests, there is a most ex- 

 tensive quarry of the same stone, which is used, I believe, not only 

 for road metal, but also for millstones, etc. It is there about eight 

 feet thick, without fossils or any lines of stratification or deposit, but 

 it is fissured at intervals perpendicularly, and it is by these fissures 

 that it can be broken up. Its surface is embossed in the most extra- 

 ordinary manner, or perhaps I should say hollowed out into pits of 

 different depths from nine inches to two feet, the internal portions 

 varying also in depth below the general level, but never running 

 into each other, so that when I saw it, it was full of little pools of 

 water. 



I was unable to trace this massive rock in its relation to the 

 Calcaire grossier ; but at a short distance I found small blocks im- 

 bedded in loose sand of the same colour, containing Cerithia and 

 other Grignon fossils, which I could not distinguish from the mass, 

 and I believe it is from this bed that the shells in the Paris Seine 

 gravel are derived, for similar shells from Calcaire grossier are 

 usually only casts, and are too fragile to bear the friction of the 

 gravel. 



