N 
distribution, though generally not well fitted for use 
for the manufacture of vessels or other articles. At the 
site of the principal quarry, illustrated by Schumacher, 
there has been some recent quarrying but the particular 
mass from which the ancients cut so many pots remains un- 
disturbed. The cutting has been done with all kinds of 
picks and chisels, some of them certainly with steel tools 
with well squared edges about 1^- inches in width, judging 
from the markings. Cactus covers a large part of the sur- 
face so that a careful study of the old rock could not be 
made . There are some four or five hundred square feet 
of the sloping surface quite covered with the stumps, 
rings and partly rounded out masses in sight. Scattered 
about this spot over the area worked I found many broken , 
unfinished vessels mostly deep bowls in general outline, 
