2 Boulder Mosaics in Dakota. [ January, 
not informed of the fact its recency would be apparent from the 
pebbles comprising it lying on the surface of the ground, while 
those forming the turtle are half imbedded. That it is not of 
the same origin as the turtle is further indicated by the represen- 
tation of the legs and arms by single rows of stones. The locality 
was first visited by the writer in 1881, and the figures were 
intact when seen again in 1883. The figure is about fifteen feet 
in length from tip of tail to front of head. A little pile of stones 
lies a short distance in front of the head. 
This work, interesting as it is, sinks into insignificance when 
compared with a similar work upon Paha Wakan, or Medicine 
hill, near Blunt, in Hughes county. This hill is also a high inter- 
lobular portion of the principal moraine, and presents the same _ 
general features as Turtle point, as will be seen in a sketch of 
it, from the east, in Fig. 6. It rises above the surrounding plain 
about 200 feet, and nearly 400 feet above the adjoining valley of 
Medicine creek. Its summit is flat and includes many acres. 
Granite and limestone boulders abound in profusion. Tipi-rings, 
2. e., circles of boulders which were used in holding down the 
covering of the conical tents used by the Dakotas, are very abun- 
dant upon the summit. A few mounds of ordinary size are scat- 
tered in no apparent order. Near the north-western angle of the 
summit platform is the gigantic figure represented in Fig. 4. Its 
length measured roughly along its central line, following the 
crooks, is 120 paces. The general form, with length, breadth 
and number and shape of crooks, are as faithfully represented as __ 
a hasty sketch could give. The boulders composing it are from 
` six to twelve inches in length, and are laid much less closely 
than in the turtle. The direction of its northern half is N. 18° 
. The presence of the mound at its side seems to be acci- 
dental. The head is more carefully represented in Fig. 5, where 
an attempt is made to express the shape, size and position of the 
boulders composing it. The eyes are much more expressive than 
it would at first seems possible to make them with such material. 
They have literally a “sony stare.” They are formed of two oblong 
- boulders nearly a foot in length. The angular head and heavy 
body suggest the rattlesnake as the designer’s model, but there is 
no clear representation of the rattles. Perhaps that was beyond 
the artist’s inventive power. Atc, in Fig. 4, the boulders have 
evidently been displaced, probably by water or frost action, as 
