IOWA ACADEMY OF SCIENCE Vol. XXIY, 1917 
46 
of buffalo mounds. Conical types are associated with the effigies 
in all three groups. About two miles north of North McGregor 
on a high point of St. Peter sandstone, somewhat back from the 
river, lies Pleasant Ridge group, probably the finest group of 
effigy mounds west of the Mississippi river. This consists of ten 
mounds representing at least two different animals and two 
mounds representing birds. With these are two linear mounds but 
none of the conical type. At a high island at the southern end 
of the park area is a group of eighty-eight conical, four long and 
four effigy mounds. 
In all there are probably nearly two hundred mounds within 
the proposed park and as many more within five miles north and 
south, making altogether a very interesting field for the study of 
the works of a race that is now gone from a land that to them, as 
to us, was ‘ ‘ Iowa. ’ ’ 
Waukon. 
