I860.] WEIGHT— LIAS ASD BONE-BED. 379 



<i thickness of above 80 feet. "When this section is lit up by the sun's 

 rays, and seen at a distance of two miles, it has a most beautifully 

 picturesque appearance from the varied colouring of its different 

 beds. 



Section at Wamlode Cliff. — "Wainlode Cliff on the Severn, between 

 Gloucester and Tewkesbury, affords a similar section of the same 

 beds, the details of which have been already published by the late 

 Mr. II. E. Strickland in his paper on the Bristol Bone-bed*, and by 

 the llev. P. B. Brodiein his work on Fossil Insects f. The following 

 abstract "will enable the reader to correlate the strata at "Wainlode with 

 those at Garden Cliff. 



Section at Wainlode Cliff. 



ft. in. 



1. Thin beds of Lias-limestone, alternating with beds of clays 



and marls, and having quite near the top a band of hard 

 lias-limestone ; the Ostrea-hed , with Ostrea liassica, 

 StrickL, and Modiola minima, Sow 22 



2. Hard, greyish, slaty bed, containing scales and teeth of 



Fishes {Gyrolepis, Ilybodus, and Saurichtliys) 1 



3. Dark-coloured slaty clay 1 6 



4. The Pecten-bed ; a dark-coloured, pjiitic, calcareous 



sandstone, containing Pecten Valonicnsis, Defr., in con- 

 siderable numbers, Avicula contorta, Portl., and two 

 other species of shells 4 



5. Dark laminated clay 9 



0. The Bone-bed; a dark, hard, pyritic sandstone, contain- 

 ing bones, scales, and teeth of Gyrolepis, Hybodus, and 

 Saurichthys, imbedded in a light-coloured sandstone, in 



which are abundance of Pullastra arenicola, StrickL, 



and Avicula contorta, Portl 3 



7. Black shales 2 



8. Light-greenish marl, breaking into angular fragments . . 23 



9. lied marl, with bands of a greenish colour 42 



[The beds dip very slightly to the south.] 



100 2 



Coombe Hill. — On lowering the road to the canal which passes 

 through the low escarpment formed by the junction of the Lias and 

 Red Marl at Coombe Hill, near Cheltenham, and '.'<\ miles north-easl 

 of Wainlode Hill, the Avicula contorta beds were cut through, and 

 a considerable quantity "I' the Bone-bed was obtained. The lair 

 .Mr. Dudneld of Tewkesbury made a Large collection of specimens of 

 the Bone-bed from this cutting, and the Late Mr. II. B.Strickland 

 gave a detailed section in his papert on this subject. Beneath 

 22 feet of Lias-clays, the following beds were found : — 



i't. ia. 



Dark, impure, pyritio limestone o' With Vecten Valonimsia and Put- 



* Froo. of the QeoL Boa v.. I. iii. p, 586. 



t FossD CnseotB of the Secondary K<"-i>~. p, 58 



J True, of the QtiOL Sue. vol. iii. p. 58 >. 



■J 1 li 



