The description which follows does not include pottery figurines, toys, rattles, pipes, or pot rests. Also one undecorated jar[7] was not included in the study.
Techniques of description used here are almost entirely based upon Colton and Hargrave (1937), Shepard (MS), and Gifford (1953); the latter paper being also the source of the paint permanency scale.[8] Color analysis is based upon the Munsell Soil Color Chart and hardness tests upon Moh's scale. Depth and diameter measurements refer to exterior dimensions.
[8] I wish to thank A. H. Schroeder. R. C. Euler, and H. S. Colton for their constructive criticism of this description.
[Illustration: Fig. 2. Rim and lip types. Interior to left; exterior to right.]
Since the size of the collection leaves much to be desired, particularly as regards Parker Buff, Fort Mohave variant, the writer wishes to emphasize that the definitions of these variants are only tentative and hopes that others will not hesitate to revise them in the light of additional evidence.
=Variant named for=: Fort Mohave Reservation.
=Type specimens=: Mohave pottery collection at the University of California Museum of Anthropology.
=Type sites=: All specimens were collected ethnographically on the Fort Mohave Reservation in the vicinity of Needles, California.
=Time=: In use and collected during the years 1902 through 1908.
=Size of sample=: 33 bowls; 4 jars; 7 cups; and 29 scoops.
=Firing=: Fully to incompletely oxidized.
_Color._--Range: hue 2.5YR to 10R; value 6 to 7; chroma 4 to 6. Most common: 2.5YR 6/5 (between a weak reddish orange and a weak orange.)
_Temper._--Size: average .4 mm. (fine); maximum 1.4 mm. (coarse); minimum microscopic. Greatest range between average and maximum observed in a single vessel is .4 to 1.3 mm. Kind: predominantly white angular and subangular particles (feldspar) together with a small amount of white rounded particles (quartz). Some mica (copper-colored) is present, but except for a few vessels is hardly noticeable.[9] No sherd temper is visible. Amount: When seen in cross section the amount of the paste surface occupied by temper particles ranges from ca. 30 per cent to ca. 50 per cent; the average being ca. 40 per cent.
[9] Mineral identifications were kindly made by Dr. Adolf Pabst, Department of Geological Sciences, University of California.]