~5 2 



THE POPULAR SCIENCE MONTHLY. 



Fig. 3. 



J^edcje, witf) cliff 

 cparrpbers, below the C0.S& 



iofee 



r- 



Fig. 4. 



ggzg ^ggZ gz 



e)ectior) of wall. 



\ofeet ' 



Showing foundation subborT. 



Fig. 5. 



Plfcrj of 1 st floor of C^S^. 



lofcet. 



were evidently taken dry. They average about fifteen inches in 

 circumference, and were set into the walls at the time the latter 

 were built. They were burned off flush with the wall outside. 



