According to Chever* a free-hand pressure method of 
chipping of someth...t exceptional character was practiced 
by v l v.ali.'t'orrx'irs. tribes; 
u The tone arrowheads are made with great care, and 
j 
the arte rial: iron filch they are made are often brought 
from long distances • Obsidian arid agate are probably 
selected riot so much for beauty of coloring as for their 
i 
close grain, which admits of more careful shaping. They 
use a tool with its working edge shaped like the side of 
a glazier's diamond. The arrowhead is held in the left 
uancl, while the nick in the side of the tool is used as a 
a/ 
nipper to chip off small fragments * 11 hi .co h does not 
a/ Chever, Edward, The Indians of California, The American 
Batumi 1st, Vol. 14, May, 1870, ho. 5, pp # 141-4 
appear tin t Mr, Chever actually witnessed the use of the 
nipper described and illustrated by hi , it seems possible 
