61 



that ice does not sink into all the hollows, but frequently 

 bridges over large cavities; and these hollows would be just 

 of such a class as to escape contact with the moving mass 

 above ; so that the successive deposits would be preserved 

 from time to time, as the ice passed away and returned. 



The following diagram will illustrate the above descrip- 

 tion, showing the geological structure of the district and the 

 mode of occurrence of the hematite iron ores, and also of the 

 ice covering, by which I suppose the superficial deposits to 

 have been formed. 



SECTION NEAR DALTON-IN-FURNESS. 



Ui^h Eaum s 



a. Silurian (Coniston Grits and Flags). 



h. Carboniferous (Limestone, witli Hematite Iron Ore in veins and "pockets' 



c. Drift Deposits (Hematite Iron Ore, with Boulder Clay, Wood, and dehrh 



rocks). 



d. Supposed Glacier (by which the deposits (c) have been formed). 



of older 



" The Results of the Settle Cave Exploration," by W. 

 Boyd Dawkins, M.A., F.R.S. 



Since the results of the exploration of the Settle Caves 

 were brought before the British Association at Liverpool, 

 in 1870, considerable progress has been made in the further 

 investio'ation of the remarkable contents of the Victoria 



