500 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 112 



were found, as well as occasional perfect or broken artifacts of stone. 

 No pottery was found, either on the site or in its immediate vicinity. 

 This lack of pottery indicates that the site is a preceramic horizon 

 or that the site is a workshop without adjacent habitation sites. 

 Collection from the site consists of: 



Item USNM No. Quantity Plate No. 



Projectile, triangular, obsidian 411685 1 lis 



Projectile, lanceolate, obsidian 411685 2 11/ 



Projectile, elongate, tanged obsidian 411685 2 lid 



Projectile, stubby, tanged obsidian 411685 3 lie 



Scraper knife, fli nt 4 1 1 684 1 116 



Celts, broken and incomplete 411680 5 — 



Chisels, polished 4 1 1 683 3 11a 



The celts and chisels are made from locally obtained boulders of 

 glaucophane schist, or phyllite, both forms of metamorphosed shale 

 (identified by Mr. James H. Benn, formerly of the U.S. National 

 Museum). The obsidian is both of the speckled type and the plain 

 type, which is translucent on thin edges. 



Early Jonion Period 



At Sunahama, located on the right bank of an abandoned channel of 

 the Ishikari River, 1.8 miles west of Horomui, Ebetsu Township, is a 

 small outcrop of cultural remains at a depth of 20 feet below the 

 present surface of the flood plain. No excavations were undertaken, 

 but a small collection consisting of sherds and two small triangular 

 arrowpoints was made where these artifacts protruded from the 

 deposit. The sherds appear to represent the cylindrical ware of the 

 Early Jomon Period (Groot, 1951, p. 39). They are straight sided, 

 flat bottomed, and cord marked over the entire outer surface. The 

 paste is tempered with sand containing flakes of obsidian, and the 

 ware is gritty to the touch. Designs occur only adjacent to the rim 

 and consist of lines of pseudocord impressions parallel to and, rarely, 

 at right angles to the lip. Rims are straight and rounded in cross- 

 section, while six out of the seven rims show a notched rim top. 

 Three sherds (411666) from this site are illustrated in plate I2a-c. 

 The two arrowpoints found are of obsidian (411665). 



Middle Jomon Period 



One mile north of the town of Shimamatsu, on the road to Hiro- 

 shima, is a small site lying on a hill just north of an unnamed creek 

 that flows into the Shimamatsu River. Surface indications of occu- 

 pancy occur over a 10-acre tract and consist of chips, artifacts, and 

 an occasional sherd. All sherds are of the Yoichi type attributable 

 to the Middle Jomon Period. Fragments of grooved mullers are 

 plentiful. Artifacts collected are: 



