Walls 33 



scale. The famous, or infamous brown 

 stone fronts of New York are good ex- 

 amples of this for the stone was set op- 

 posite to its natural bed in the quarry and 

 the consequence is that all over town you 

 will see the brown stone scaling away. 

 The reason that the masons laid them as 

 they did was to secure a surface that 

 would take a smoother finish. 



The top of a dry wall may be finished 

 level, with the stones as they come or have 

 a coping. The coping can be of broad 

 flat stones laid dry covering the entire 

 width of the top or they may be set in 

 cement mortar, the interstices being well 

 slushed up with the mortar. 



The neatest example of a dry stone wall 

 to the author's knowledge borders the line 

 of the new Catskill aqueduct not far from 

 New York City. The stones have been 

 split in long lengths and have been care- 

 fully fitted. The faces are true with no 

 projecting' stones and the spaces between 

 the larger stones are filled with smaller 

 ones, which almost exactly fit their posi- 

 tion. The coping is of rough cut stone 

 in long slabs covering the entire width and 



