EXPLANATION OF THE PLATES AND WOODCUTS. 



PLATE XLVIII. 



Illustrates Mr. Strickland's description of a series of coloured sections of the cuttings on the 



Birmingham and Gloucester railv/ay : p. 545 et seq. 



The sections given in this plate exhibit the more important geological phsenomena ex- 

 posed along the line of the railway. 

 Fig. L Exhibits the cuttings from Stoke Prior through the summit-level of the Lickey ridge 



to Longbridge : p. 547. 

 Fig. 2. In this section the cutting through the Lickey ridge is given on an uniform scale ; and 



the new red conglomerate is shown to rest unconformably on highly inclined strata of the 



lower new red sandstone : p. 547. 

 Figs. 3 and 4. Exhibit cuttings through the junction beds of the lower lias and red marl : p. 



550,551. 

 Fig. 5. Shows the positions of the marine gravel with flints, and the ancient fluviatile deposits 



with reference to the configuration of the country : p. 554. 



WOODCUTS 



Explanatory of Mr. Maclauchlan's Notes on Pembrokeshire: pp. 557 — 560. 



Fig. 1. Section from Abereiddy Bay to Solfach Harbour, near St. David's : p. 558—560. This 



section is about fifteen miles to the west of No. 2, and nearly parallel to it. 

 Fig. 2. Section from Llawhaden, near Canaston, to Dinas Head: p. 557—559. 



WOODCUT 



Exhibiting the phaenomena exposed in the cutting at Bleadon Hill on the line of the Bristol 

 and Exeter railway, and described in the communication of the Rev. David WiUiams : 

 p. 561, 562. 



THREE DIAGRAMS 



Exhibiting the natural cleavage of quartz-rock (fig. 1.) and slate (figs. 2, 3.), noticed in the 

 extract from the Rev. W. B. Clarke's paper on the Cotentin : p. 565, 566. 



TWO WOODCUTS, 



Of veins of gravel in granite exposed on the north-west coast of Guernsey. The circumstances 

 connected with these veins are described in the extract from a letter by W. C. Trevelyan, 

 Esq. : p. 567. 



