MOUNDS IN IOWA. 



589 



Fig. 6. Supplementary to Fig. 2. (p. 577). 



was made iu the article regarding them ; neither were they represented 

 in the map accompanying the paper. A few weeks ago however we 

 made another examination of the region. The brush, etc., had been 

 cleared from the surface aud burned, thus fully exposing the mounds. 

 They were shown to be the work 

 of human hands, and are repre- 

 sented in the accompanying dia- 

 gram. No. 2 is accurately repre- 

 sented iu the map given, and is 

 here introduced simply to show 

 its relations to the other mounds. 

 No. 1 is an obloug mound, 30 feet 

 long, 24 feet wide, and 2 feet 

 high. From the center it slopes rather more rapidly to the north than 

 to the south. The distance between No. 1 aud 2, at B, is between 4 and 

 5 feet. No. 3 is a long mound, 81 feet iu length, 15 feet wide at the base, 

 aud 2 feet iu height at the center. The distance between this mound 

 and No. 2, at C, is 24 feet. At A, an excavation, 1^ feet in depth, had 

 been made; this excavation was much the deepest at the base of No. 2. 

 Here doubtless was where a portion of the material for the construction 

 of No. 2 was obtained. The material for the other mounds was appar- 

 ently scraped from the surface in the immediate vicinity. 



These three mounds were apparently reared for the purpose of de- 

 fense. Eunning north by northwest (in a Hue) from No. 1 are several 

 small circular mounds from 8 to 10 feet in diameter. For what purpose 

 these were raised, we are at present unable to state, as no exploration 

 of them has beeu yet made. 



