PLATE XIX

a. Whetstone of homogeneous, deep olive-green jade,
oval in cross-section. From Hotham inlet, Kotzebue sound,
Alaska.

b. Whetstone of pale-green jade, flattened in cross-section
and slightly curved in its length. From Kotzebue sound,
Alaska.

c. Whetstone of dark olive-green jade, rounded in cross-
section and showing a shallow groove in its length. The
upper end is secured and covered with seal-skin, and a thong
is provided to fasten it to the belt. From the Bering coast of
the Nome peninsula, north of Cape Nome, Alaska.

d, Whetstone of milky pectolite, four-sided, but rounded
in cross-section. Through the hole in the end a seal-skin
thong is spliced for attachment to the belt.

e. Whetstone of a blue-gray jade, finished throughout,
deeply grooved, and pierced with a long eye at the upper end.
From the coast of Seward peninsula, Alaska.