436 GLANCE AT THE GEOLOGY OF 



Carbonic Acid 38.40 



Silica 11.65 



Magnesia 8.95 



Oxide of Iron 9.45 



Lime 29.80 



Water 1.75 



100.00 



In composition, the stone somewhat resembles 

 the magnesian limestone of Mansfield, Notting- 

 hamshire, alluded to by Professor Sedgwick, at 

 page 85 of his paper, on the Geological Relations 

 and Internal Structure of the Magnesian Lime- 

 stone, Transactions of the Geological Society of 

 London, Vol. 3, Second Series. The following 

 is the analysis made by the Rev. J. Holme, of 

 the Mansfield bed : 



Lime 28.750 



Magnesia 11.125 



Carbonic Acid 34.750 



SiUca 20.250 



Red Oxide of Iron and Alumina 3.375 



Earthy Muriates of Soda, Lime, and> o 250 



Magnesia y 



Water and loss 1.500 



100.000 



