64 THE ESKIMO ABOUT BERING STRAIT [ETH. ANN. 18 
the bottom slopes; the long, nearly straight, unnotched 2dge forms 
the ledge on which the wick rests. 
From St Lawrence island a number of lamps were obtained, showing 
considerable variety of form. 
Plate XXVUI, 7, represents a lamp made of clay, 114 inches long, 94 
wide, and 2? deep; it is suboval in outline, with a tray-shape bottom; a 
high, thin ridge runs along each side, just above the bottom, which 
projects upward, and inclines a little outward; a deep notch is cut 
through the middle of these ridges close to the level of the bottom for 
receiving the wick. The form of this lamp is precisely that indicated 
on the toy carving from the Diomede islands above described (figure 19). 
Plate XXVIII, 8, illustrates a lamp from St Lawrence island, 144 inches 
long by 124 wide and 23 deep. It is like the last in general shape, but 
slopes gradually from the sides downward to within a short distance 
of the bottom, when it drops suddenly to a depressed area about an 
inch deep, which occupies the entire bottom of the lamp; along each 
side of the bottom projects a ridge, which slopes upward and a little 
toward the middle. These ridges are pierced by a round hole near 
each end, about on a line with the bottom of the lamp, through which 
the wicks were inserted. Both this lamp and the.one last deseribed 
undoubtedly stood upon framework supports, and were used probably 
for cooking purposes. 
A tray-shape clay lamp (number 63569) from St Lawrence island is 
154 inches long by 102 wide; it has two projecting ridges on the inner 
sides, midway between the rim and the bottom, for supporting the 
wick. This, like the other large lamps from this island already 
described, was undoubtedly used for cooking. 
Plate xxvul, 4, shows a tray-shape lamp from St Lawrence island, 
which undonbtedly was used solely for illuminating purposes. It has 
the upper border flattened smoothly on three sides; along the front the 
slope extends gently backward toward the deepest part. Extending 
lengthwise, midway between the bottom and the front border or lip, is 
a thin projecting ridge; the front border of the lamp above this ledge 
shows signs of having been burnt; evidently the wicks had their bases 
supported against the raised ridge while their upper edges projected 
from the lip. 
Plate XXVIII, 5, represents the support for the last-described lamp. 
It is made of clay, and is in the form of a pot 5 inches high and 63 wide. 
It has a flat bottom, with the sides rounded to the front, where a cres- 
centic depression is made in the border, with a slightly raised point on 
the rim at each side. The lamp was placed on the mouth of the vessel, 
the depressed portion of which is just beneath the point where the wick 
rests along the outer edge of the lip, so that any drippings of oil which 
might run down would be caught in the vessel below. 
The lamp from St Lawrence island shown in plate XXVI1, 9, is some- 
what similar in shape'to the preceding, but having the bottom flattened 
