PLATE I. 



MOUTH OF MAYFIELD'S^AV 



*^-'--i*^: 





. ^i^^^T:' 



MOUTH OF MAYFIELD'S CAVE. 



Looking in the general direction in which the cave extends. At the lower right is shown 

 a portion of the shallow ravine which formerly was a part of the cave. 



MELIOTYPE CO., BOSTON. 



