1887]. Zncised Boulders in the Upper Minnesota Valley. 641 
on possible relationship between these two interesting classes of 
relics of the very old times. 
D/ACRAM N°2 
o 6 2 % Inches 
to 20 3e 4o Centimetres 
This boulder is on a high terrace on the west side of the 
- Minnesota River, one and a half miles south of Brown’s Valley, 
and is in Roberts County, Dak. It is oblong in form, being 
three and a half feet in length, two feet in width, and is firmly 
imbedded in the ground. : 
Figs. 1 and 2 are undoubtedly tortoises. 
Fig. 3 is probably intended to represent a bird-track. 
Fig. 4 represents a man, and is similar to the one at Brown’s 
Valley. 
Fig. 5 is a nondescript of unusual form. 
Fig, 6 is apparently intended to represent a headless bird: 
that respect greatly resembling certain earthen effigies in ie 
_ regions to the southeast. 
The figures are about one-fourth of an inch in depth, and very 
smooth, excepting along their edges, which roughness is caused 
by aslight unevenness of the surface of the boulder. 
This boulder is only a short’ distance from one previously de- 
scribed as “ Thunder Bird’s Track’s Brother,” some four miles 
_ northwest of Brown’s Valley, and, like No. 2, is in Roberts : 
County, Dak. 
The figures here represented are roughly pecked into the 
y one and were never finished; for the grooves that form the 
a ts on other boulders in this region have been rubbed 
