124 BUREAU OF AMERICAN ETHNOLOGY [BuU. 179 



Inspection of figures 20 and 21 suggests the following generaliza- 

 tions: 



A. The vertical and horizontal distribution of the ceramic sample corresponds to 



physical stratum B. 



B. There is a progressive quantitative increase in ceramic materials, extending 



from the lowermost portion of stratum B to the immediate subsurface of 

 the deposit. A nonsignificant contraction is apparent in the disturbed sur- 

 face level. 



C. Ceramic remains undergo a quantitative change in variety from the lower to 



the uppermost portions of stratum B. 



D. There is a progressive proliferation of "types" in the upper portion of the 



deposit. 



E. Group A is quantitatively most significant, constituting 0.70 of the total 



sample. In terms of stratigraphic distribution, it is also the earliest and 

 most persistent. 



F. Other groupings, present in some length of sequence, are represented by short 



series, discontinuous distributions, or are lacking in homogeneity of unit. 



Group A suggests an obvious similarity to Lake Michigan Ware 

 and related or inclusive types (cf. Effigy Mound, Madison Cord 

 Imprinted) characteristic of adjacent portions of Iowa, Illinois, 

 Wisconsin, and Minnesota. A recent but largely generalized state- 

 ment of this pottery, specifically that variety excavated from Effigy 

 Mound Culture sites in Wisconsin, has been presented by Kowe 

 (1956). Other descriptions were published somewhat earlier by 

 McKern (1928, 1930; see also Bennett, 1945, pp. 80-81). Lake 

 Michigan Ware, although ill defined, has been considered to fall 

 within the Woodland tradition. Kowe (1956, p. 59) indicates that 

 "This ware includes the pottery of the Effigy Mound type, but is so 

 generalized and has a distributional range of such a nature that it 

 cannot be considered diagnostic of the Effigy Mound Culture." It 

 should also be noted that this is not the only pottery type present 

 in the Effigy Mound sites (McKem, 1928, p. 268). 



The Group A pottery of Woodpecker Cave is similar, but by no 

 means identical with the Effigy Mound ceramics of Wisconsin. Vessel 

 temper appears to be the same, or nearly so, but the temper of the 

 Cave materials contains in addition many large and irregular in- 

 clusions. The latter pottery is characterized by a dense friable paste ; 

 the Wisconsin sherds, by all descriptions, have a much more porous 

 texture. Similarly, the Coralville specimens are gray in color and 

 are thin. In the Wisconsin grouping, the paste is of a reddish color 

 and the sherds average relatively thicker. 



A cord-marked surface is common to both, although there seems 

 to be more evidence of smoothing in the Wisconsin grouping. Body 

 and rim form also appear to be similar, but the Woodpecker Cave 

 series does not emphasize the outflaring rim so common in the 

 Wisconsin materials. Incurved rims, dominant in the Coralville col- 

 lection, are of rarer occurrence in Wisconsin (Rowe, 1956, p. 62). A 



