532 PROCEEDINGS OF THE NATIONAL MUSEUM 



Treatment: One surface scraped with the edge of a ribbed clamshell producing 

 broad parallel grooves more or less 1.5 mm. wide and 1.5 mm. apart, varying 

 with the size of the shell used as the tool. The majority show scraping in 

 one direction only, but intersecting or overlapping patterns occur. About 

 95 percent of the sherds are scraped on the interior only, suggesting that this 

 is a technique of surface finish rather than one of intentional decoration since 

 the vessels are constricted mouthed jars. Exterior scraping is restricted to 

 the necks of jars of Form 9, and the marks run vertically, probably for 

 decorative effect (pi. 8). 

 Hardness: 3.5-4.5 

 Form (total rims from seriated samples, 36) : 



Rim: Everted and slightly to markedly thickened at the angle of eversion, or 



direct with rounded or flattened lip. 

 Body wall thickness: 0.3-1.1 cm.; majoritj' 4-6 mm. 

 Base: Probably slightly flattened. 



Reconstructed common vessel shapes: Form 9 — 94.3 percent. 

 Minor vessel shapes (frequency less than 5 percent): Forms 1 and 10. 

 Temporal Differences Within the Type: None discernible. 

 Chronological Position of the Type: Present throughout the seriated se- 

 quence with no apparently significant change in frequency (see fig. 38). 



Jambeli White-on-Red (Jambeli Blanco Sobre Rojo Pulido) 



Size of Sample: 599 sherds. 

 Paste : 



Temper: Sand abundantly mixed with minute grains of mica; sand typically 



fine but with occasional coarser inclusions up to 1.5 mm. Abundant and 



well mixed. 

 Texture: Fine grained, sandy; tendency to laminated appearance accentuated 



by slit air pockets parallel to surface. 

 Color: Range from completely oxidized light orange, to orange along the surface 



with medium to dark gray core, to gray through entire cross section. 

 Surface: 



Color: Decorated areas covered with a thin red slip, typically a dark rich red 



of relatively uniform hue. Undecorated surfaces light orange or tan. Gray 



fire clouds may occur on interior or exterior. 

 Treatment: Slipped surfaces smooth, even, and where uneroded show a gloss. 



Unslipped surfaces even, sometimes showing smoothing marks, but not 



polished. Sparkling pinpoint mica grains are visible on slipped and un- 

 slipped surfaces. 

 Hardness: 3.5-4.0 

 Form (total rims from seriated samples, 227) : 



Rim: Direct, interiorly thickened, everted, with rounded or tapered lip. 



Body wall thickness: 0.3-1.1 cm.; majority 3-5 mm. 



Base: 1) Slightly flattened; 2) Annular, diameter 16-18 cm.; 3) Hollow polypod, 



maximum diameter 4-5 cm. 

 Reconstructed common vessel shapes: 



Form 1 — 62 percent 



Form 3 — 15 percent 



Form 6-7.9 percent. 

 Minor vessel shapes (frequency less than 5 percent) : Forms 5, 4, 9, 8, 10, 12, 



and 13. 

 Additional rare vessel shapes: 1) Jar with spout and bridge handle: Spout 



length 4 cm., exterior diameter 1.3 cm., interior diameter 0.8-0.9 cm., 



maximum body diameter 12 cm. (fig. 23, a). 



