Jhrn, ■fbrbixrning Twles. 



ActOjoZ thickness 

 of walls of Two f. 



The clamp and ncaL ixTneflu^ apvUetZ, 



QuxtrtBT-crcbch, with, cross cut'.') 



Tea cmcfc. Wall removed, to sJtoiv 

 fibsarptioiv of coffin, 'bone. 



'Ireutecl t/i/ ciampuig wtthncuis. 



Crachccl, walls. 



One effect of (^aarier-Crac^ 



QUARTER-CRACK AND REMEDIES. 



