12 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I47 



Roberts and Amsden separated their 1,389 Black-on- white sherds 

 into 19 lots including "miscellaneous" (37.5 percent) and those with 

 no trace of paint (23.9 percent). Of the remainder, design elements 

 familiar to all students of Pueblo history appeared at various levels 

 and in the following proportions : 



Per- 



Strata ABCDEFGHIJK cent 



Straight hachure ... 4 31 8 43 3.1 



Squiggled hachure .. 6 2 7 3 6 16 7 3 5 55 3.3 



Ticked lines 4 10 16 5 15 18 7 6 4 85 6.2 



Waved lines 45 43 784 1 36 2.6 



Stepped triangles ... 5 16 17 25 9 20 12 4 9 117 8.5 



Dotted triangles .... 6 3 13 15 9 9 9 4 4 72 5.2 



Volutes 1 6 7 3 3 13 5 3 3 44 3.2 



Checkerboard 11 1 3 1 7 0.5 



Opposed dentates ... 1 2 2 14212 15 1.1 



Chaco- San Juan .... 11 15 5 31 2.3 



Mesa Verde 1 1 0.1 



To process the vast quantity of potsherds we had previously 

 recovered from excavated rooms and trenches, Amsden and Roberts 

 established a workshop in reconditioned Rooms 122-124 at the south- 

 west corner of the ruin (pi. 4, upper). Here they sorted, counted at 

 least twice, and classified an estimated 2,000,000 potsherds. After 

 eliminating all recognizable duplicates there remained 203,188 frag- 

 ments for tabulation, and these, coupled with data from West Court 

 Tests 1 and 2, provide a framework for the history of pottery making 

 at Pueblo Bonito. At the end of our studies all unwanted sherds were 

 reburied, many of them in the West Mound cut made for our dump- 

 cars and track (pi. 5, lower). 



In reporting upon the material culture of Pueblo Bonito I para- 

 phrased some of Roberts's field notes in listing the diagnostic features 

 by which he and Amsden cataloged their Test 1 and Test 2 potsherds, 

 and I summarized Miss Anna O. Shepard's identifications of local 

 pigments and tempering agents ( Judd, 1954, pp. 177-183 ; see, also, 

 Shepard, 1939, p. 280). Nevertheless, for the present volume it seems 

 desirable to augment my earlier review by more liberal citations from 

 the memoranda Roberts recorded in 1925. 



The preponderant pottery from Tests 1 and 2, a total of 25 

 vertical feet, was an assemblage that seemed to span the years from 

 Pueblo I to Pueblo II in the Pecos classification (Kidder, 1927) or 

 from earth- walled pit-houses to those of single-coursed masonry. 

 Hence the term "Transitional" Roberts and Amsden coined to bridge 

 the time between. Nearly half of this assemblage was a gray-paste 



