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THE POPULAR SCIENCE MONTHLY. 



a curved bottom and diverging in like manner. The crux of Staffa is 

 Scallop or Clamshell Cave. Inattention has caused the various authors 

 to describe it as if there was nothing astonishing in the sudden inter- 

 ruption of the columns, which are "bent so as to form on one side a 



02 



g 



CO 



6 



series of ribs not unlike an inside view of the timbers of a ship," while 

 " the opposite wall is formed by the ends of columns, and bears a gen- 

 eral resemblance to the surface of a honey-comb. " Sixteen feet wide, 



