20 BUREAU OF AMERICAN ETHNOLOGY [Bull. 189 



Form : 



Lip : Round to somewhat flat. Thickness, 4 to 6 mm. 



Rim: Straight to somewhat outflared. Height, 28 to 32 mm.; thickness, 

 6 to 8 mm. 



Riggs Piiiched Rim 



(PI. 3, i) 



Sample : 26 rim sherds, representing 22 vessels. 

 Decoration : Vessels are plain except for the finger pinching. 

 Form : 



Lip: May be round, flat, or pointed. The lips are wavy, a condition induced 

 by pressing the moist clay with the thumb and forefinger offset, one inside 

 and one outside the vessel. The resulting undulation of the lip, when ob- 

 served from above, is Similar to that of Stanley Wavy Rim (Lehmer, 1954 : 

 43^4; pi. 12). 

 Rim: Straight to somewhat outflared. Height, 12 to 52 mm.; thickness, 



5 to 7 mm. 

 Neck: Some constriction on outflaring rims. 



Appendages: One loop handle, originating in the mid-rim, is attached to the 



upper shoulder. The handle projects straight out from the rim, and 



defines a right angle before it joins the shoulder. 



Previous illustrations and descriptions : A sherd of this type is illustrated in 



Will and Hecker (1944, pi. 13, the left sherd in the fifth row from the top) 



as "Archaic Mandan." 



FORT YATES WARE 



Fort Yates Cord Impressed Rim 

 (Pis. 3, a; 5, c-j) 



Sample : 136 rim sherds, representing 106 vessels. 

 Decoration : 



Lip: None. 



Rim: Three to six evenly spaced, horizontally applied cord-impressed lines 

 encircle the vessel rims. The diameter of the cord used varies from 2 to 3 

 mm., with the majority 2 mm. in diameter. Sixty-six sherds have triangu- 

 lar elements. On 7 sherds, the apex of the triangle is angular; on 25 

 sherds the apex is rounded, forming a curvilinear design. The triangles 

 are formed by either two or three lines. A sherd from one vessel (pi. 5, h) 

 has six horizontal lines of cord-wrapped stick impressions, and two oblique 

 lines. One sherd has a red stain, probably ocher, on both the interior and 

 exterior (pi. 5, e). 

 Form: 



Lip: Predominantly flat, but may be round. Thickness, 6 to 8 mm. 



Rim: Outflaring, with a recurving lip, resulting in an S-shaped rim. Height, 

 26 to 42 mm. ; thickness, 7 to 12 mm. 



NecJc: Constricted, with the rim joining the shoulder in a smooth curve. 



Shoulder: Rounded and steeply sloping. 



Size: The orifices of three vessels, projected from large rim sherds, were 

 130, 176, and 260 mm. in diameter. 



Appendages: A small, triangular tab is present on one rim (pi. 5, /). A 

 single sherd appears to be part of a small strap handle with two vertical 

 cord-impressed lines (pi. 3, a). 



