THE KETTLE AND PANS. 



79 



position. The prison at Dartmoor is formed of 

 this surface granite, and the result is, that each 

 block has become a spongy mass, absorbing 

 moisture continually, rusting the iron bars, and 

 rendering the cells so damp that they can only 

 be used by covering the walls within and 

 without with Roman cement or tiles. The 

 granite used for the Kelson Monument in 



London is obtained from beyond the influence of 

 atmospheric decomposition. The most curious 

 and grotesque results often arise from this 

 cause. Many of the strangely-fashioned stones 



