74 



has yet been made, that I am aware of, to ascertain its actual 

 proportions. I have found few fossils in this bed at Cleeve. 

 Belemnites and Pholodomyse are occasionally met with. 



No. 23. — The Upper Liassic Sands, which attain a considerable 

 development at Cooper's Hill, Haresfield Beacon, Nailsworth, 

 the Long Wood near Trocester, Uley Bury, Stinchcombe, the hills 

 around Dursley, and at Nibley, Wotton-under-Edge, Ozleworth, 

 and all along the chain of the southern Cotteswolds as far as 

 Bath, are only feebly represented at Cleeve. These Sands afford 

 an example of that thinning-out process which is seen to a 

 greater or less extent in all the other beds in our section, if 

 traced in certain directions from the point where they attain 

 their maximum development. As a general rule it may be 

 stated that all the Inferior OoHtic rocks thin out from their 

 western escarpment in the Cotteswolds when traced eastwards, 

 and that the Upper Liassic Sands gradually thicken when 

 traced from the northern to the southern part of the chain. I 

 have found no traces of the Cephalopoda bed at Cleeve, which 

 contains such a large assemblage of Ammonites, Nautili, and 

 Belemnites at Nailsworth, the Long Wood near Frocester, and 

 other locaHties. The Liassic Sands rest conformably on the 

 Clays of the Upper Lias, which are occasionally exposed in the 

 escarpment, and contain small dwarfed specimens of Ammonites 

 hifrons, Brug. The line of junction between the Sands and Clays 

 is indicated by the outburst of springs, as it is the Upper Lias 

 Clay which throws out the drainage of the Inferior OoHte. This 

 is well sheWii at Noverton Head, near Prestbury, Thrift Wood, 

 Queen's Wood, and at the small valley leading down to Wood- 

 mancote ; in all these locaKties the origin of the spring indicates 

 the line of junction of the Upper Liassic Sands with the Clays 

 on which they repose. 



