472 INDEX. 



PAGE 



Reading, account of the plastic clay beds, near . . . 278 



Red marl or sandstone of the south-eastern part of Durham 



described ......... 2 



analogous to the red sandstone of Not- 

 tinghamshire ........ 3 



Red marl, probable identity of the deposites of, that cover the 

 coal measures and abut against the inclined edges of 

 mountain limestone 208 



Red sandstone with gypsum composes the greater part of the 



plain of Carlisle ....... 105 



— — — ■ more recent than the old red sandstone . 106 — 115 



— , its contact with the other rocks near 



Melmerby, described . . , . . . 112 



near Melmerby the same as that of Cheshire and 



Salop 1 16 



Red sandstone, Old, found in the Cheviot hills ... 94 



— — interposed between the limestone series of 



Cross Fell, and the slate Ill 



the lowest rock of the neighbourhood of 



Bristol 210 



bed. of, in the slate near Cruachan . 1 19 — 135 



» — transition between it and gneiss in Sky 161 — 165 



Resin and oil, substance composed of, found near Stockport . 445 

 Roads, Parallel. See Parallel Roads. 



Saddleback height of 436 



Salt spring, issuing from the interstices of a basaltic vein at 



Butterby 24 



Sandstone, varieties of in the coal measures, described . . 17 



, beds of in the lead mine measures described . . 63 



, of Strathaird in Sky, observations on . . . 171 



Satin spar, found in a black slate clay at Aldstone . . 57 

 Schist of Cruachan, its junction with the granite . . 120 

 much indurated where in contact with the 



granite ......... 121 



Secondary strata, of Scotland, their line of separation from the 



primary generally noticed 221 



