CU9HING. 



EVOLUTION OF FORMS. 



501 



a basket-bowl with sand, managing the clay in a way above described 

 and continuing the vessel-shaping upward by spiral building. She did 

 not at first make the shoulders low or sloping, but rounded or arched 



Fig. 531. — Secondary form in the mold. 



them upward and outward (see again Fig. 529). At this I remonstrated, 

 but she gave no heed other than to ejaculate " wd na ni, una! " which 

 meant "just wait, will you ! " When she had finished the rim, she easily 

 caused the shoulders to sink, simply by stroking them — more where un- 

 even than elsewhere — with a wet scraper of gourd (see Fig. 532, a) until 



( 



Fig. 532. — Scrapers of gourd and earthenware for smoothing pottery. 



she had exactly reproduced the form of the drawing. She then set the 

 vessel aside in the basket. Within two days it shrank by drying at 

 the rate of about one inch in twelve, leaving the basket far too large. 

 (See Fig. 533.) It could hence be removed without the slightest diffi- 

 culty. 



Fig. 533. — Finished form of vessel in mold, showing amount of contraction in drying. 



The sand had prevented contact with the basket which would have 

 caused the clay vessel to crack as the latter was very thin. This process 



