Proceedings of the British Association. 1 1 1 



an inspection of the fossils, he had predicted that those rocks, although 

 different in mineral composition, would agree in age with the old red 

 sandstone, being between the Carboniferous and Silurian systems. 



Dr. Buckland announced, that the fossil Flora 'of Great Britain was 

 about to be continued by Messrs. Hutton and Henslow, who solicited 

 the loan of specimens, which might be sent to the Geological Society, and 

 would be carefully returned, after drawings had been made from them. 



Dr. Lloyd made some observations on the Geology of Warwickshire, 

 and announced the discovery of Saurian remains in that country. He 

 first alluded to the coal-field of North Warwickshire, between Tam- 

 worth and Coventry, in which the axis of direction has been ascer- 

 tained to be N.N.W. to S.S.E. Near Nuneaton, is a quartzy rock, 

 similar to that of Charnwood Forest, being, in all probability, an alter- 

 ed Caradoc sandstone ; it contains manganese, and is without any 

 organic remains ; some volcanic rocks occur. Greenstone is found at 

 Griff Hollow and at Marston Japet, showing that the district has, at 

 one time, been disturbed; indeed, Prof. Sedgwick considers that this 

 coal-field has been elevated during the deposition of the lower member 

 of the new red sandstone. Between Birmingham and Warwick may be 

 seen some outliers of has, as at Knowle and Chesterton. At Warwick, 

 a different sandstone from the others may be observed ; and at Stock- 

 ingford, coal, with a limestone underlying — black, smoky, and contain- 

 ing plants — also, occasionally, galena. In this district, there is no 

 magnesian limestone. In the hunter sandstein of Allesley, near Coven- 

 try, the remains of a coniferous fossil tree have been discovered, and in 

 the same formation a jaw bone, but it is uncertain whether belonging 

 to a fish or a saurian. At Garrison Hill there occurs a highly calcare- 

 ous rock, but it is uncertain if it can be regarded as muschelkalk : and 

 the absence of this rock renders the division of the Warwickshire 

 sandstone imperfect. There is a difficulty in what class to place the 

 sandstone at Warwick, which resembles bunter sandstein, but it contains 

 the salt springs of Leamington, and which springs are generally confined 

 to the keuper, or upper formation. Perhaps there may be a fault in 

 this locality, by which the sandstone has been elevated, but there seems 

 to be no disturbance of the adjacent strata. The organic remains found 

 in this sandstone have been regarded as belonging to the Dolichognathus, 

 Platygnathus, and Megalosaurus — with them coprolites are found. At 

 Shrewley Common, the sandstone is evidently keuper, containing Posi- 

 donia minuta ; it bears impressions of animals ; also ripple marks and 

 worm marks. In the rag bed of the Warwick sandstone, organic remains 

 have been found ; it contains some carbonate of lime. At Warwick a 

 little rock salt has also been found. 



Mr. Strickland regarded the sandstone at Warwick as bunter sand- 

 stein, that had been elevated by a fault. At Droitwich a similar sand- 

 stone is overlaid by the salt marie. — Dr. Buckland said, that a like rock 

 is found on the top of the variegated marie. 



