One groat heap 
pure black ringing flakes end fragments * 
which lies upon the mountain slope is over forty feet 
>■ 
zl&tu. 
in y w lr l e a l e stent and many feet in depth , comprising 
perhaps 20,000 or 50,000 cubic feet of fiakage. Efforts 
were made to dig into this remarkable deposit (fig. IS), 
iSITS OF 
AKAGE . 
but no headway could be made as there was no earth to 
hold the flakes together and the holes dug were immediately 
filled by sliding, tinkling slivers of glass from above. 
every piece of which seemed as clean and incisive of edge 
as when struck off by the ‘workmen hundreds of years ago,* 
Being without appliances for descending into the 
deeper ' pits , little was learned of the subterranean 
phenomena, and no traces were discovered of the imple 
iMERSTOHES. 
menus used in the mining operations, save a number of 
hammers tones , which ; re identical in shape with those 
■ ; • 
used in our northern quarries (fig. 4). The larger 
i Ws 
