Correspondence — W. Baldicin — Dr. C. I. Forsyth Major. 829 



^6. Shales -n'ith grit and highly fossiliferous 



calcareous sandstone ... ... ... ? 



5. Highly fossiliferous ashy limestone ... 2^ to 3| 



4. Upper trap band .. ... about 60 



Llandovery Eocks. < 3. Sandy limestone and calcareous sand- 

 stone and grit, crowded with fossils, 



about 500 



2. Lower trap band ... maximum about 185 



U. Micaceous sandstone, mthi. Symondsi ? 



800 to 850 



The rocks are afPected by the Hercynian flexures which produced 

 the Bristol coal-basin, and the outcrop of the beds in the main follows 

 the horseshoe- shaped outcrop of the Old Eed Sandstone. This 

 regularity is lost at Daniel's Wood and Middlemill. Two important 

 transverse faults traverse the outcrops, which are further obscured by 

 the overlap of unconformable Trias. The trap-bands are found to be 

 confined to the Llandovery, the number of recorded fossils has been 

 largely added to, and previous statements as to the thinness and 

 imperfect development of the Ludlow rocks and as to the probable 

 exposure of the district to erosion in Ludlow and Lower Old Red 

 Sandstone times are confirmed. The typical Ludlow fauna of Here- 

 fordshire and Shropshire has not been met with, and the series is 

 clearly much attenuated. General remarks on the fossils are appended, 

 and the paper contains lists of fossils in various collections (Bristol 

 Museum, Sedgwick Museum, Earl Ducie's collection, and the Museum 

 of Practical Geology, Jermyn Street), as well as those collected by the 

 authors from the Llandovery and Wenlock foi-mations. 



C!0IiI?-ES:E'03SriDElSrCE. 



CHANGES OF LEVEL AND EAISED BEACHES. 



SiE, — I read with great interest Dr. Jamieson's paper on the above 

 subject in the issue of the Geological M.\gazine for May (pp. 206-209). 



I was, however, surprised to learn that Dr. Jamieson's views were 

 expressed as original, for I laboured under the impression that they 

 were long ago accepted by the majority of British geologists, and I have 

 myself been teaching them for many vears. 



Professor Sollas (" The Age of the Earth," p. 35) clearly illustrates 

 how such a state of affairs can take place, though not drawing specific 

 attention to this as the cause of the phenomena of raised beaches. 



Walter Baldwin. 



EOCHDALE. 



May •22ud, 1908. 



THE MAMMALIAN FAUNA OF THE FOEEST BED. 



Sin, — In a cursory survey of fossil Voles, ^ chiefly from the so- 

 called Forest Bed, I arrived at conclusions which in several respects 

 are at variance with those of former writers on the subject. The 



1 Proc. Zool. Soc, 1902, p. 102. 



