PERMIAN BEDS OF SOUTH LANCASHIRE. 43 



of Stank_, described at p. 254 of my first paper ^. The 

 stone contains hollows filled with crystals of carbonate of 

 lime^ apparently the casts of shells. Although' a con- 

 siderable time was spent in searching for fossils,, only one 

 doubtful cast of a small shell resembling a Schizodus was 

 met with. 



The following is an analysis of the stone, for which I am 

 indebted to the kindness of a friend : — 



Carbonic acid 38*98 



lime 30*2^4 



Magnesia 11*22 



Silica 6*64 



Iron, manganese, and traces of alumina 8*31 



Water I'lo 



Specific gravity, 275. 



The dip of the stone was to the west, at an angle of 24°. 

 For 220 yards the strata are not well exposed; but they 

 appear to consist of red shaly clays ; and in Mr. Thomas 

 Eccles^s orchard are seen some beds of red clays, contain- 

 ing thin bands of gritstone of a red colour, and lying 

 nearly level. The country is flat, and the strata are covered 

 up with drift- deposits ; so that the beds of the trias, which 

 most probably are there on the dip, do not show themselves, 

 as exhibited in the woodcut. 



* Memoirs of the Literary and Philosophical Society of Manchester, 

 vol. xii. (Second Series), page 254. The following is a copy of the analysis, 

 showing the composition of the Stank limestone : — 



Carbonic acid 38*40 



Lime 29*80 



Magnesia 8'95 



Silica 11*65 



Oxide of iron 9*45 



Water 1*75 



lOO'OO 



