The excavations at Cliff Palace have revealed no specimens strikingly different from those already described as from Spruce-tree House. We would expect some variation in the symbols on pottery from the two ruins, but the differences are not conspicuous in the few specimens that have been compared. Nor is there any peculiarity in the form of the pottery, as the ceramic objects from Cliff Palace practically duplicate those from Spruce-tree House, already described, and probably are not much unlike those still buried in Long House, Balcony House, and the House with the Square Tower. [Illustration: PLATE 29 BASKET HOPPER--SIDE AND BOTTOM VIEWS] As many ceremonial objects, being highly prized, may have been removed from Cliff Palace when the place was deserted by its inhabitants, the few that remained present scant material from which to add to our knowledge of the ceremonial life of the people. The existence of so many kivas would point to many rites, although a large number of sacred rooms does not necessarily indicate more complex or elaborate rites than a smaller number: multiplicity of kivas does not necessarily mean multiplicity of ceremonies, nor few kivas a limited ritual. In no pueblo are there more complicated ceremonies than at Walpi, where there are only five of these sacred rooms; but it must be remembered that many of the religious rites of Walpi are performed in kihus, or secular rooms. The same may have been true of Cliff Palace. The writer's belief is that in historic times, by which is meant since the advent of missionaries, altars have become more elaborate and rites more complex at Walpi than in prehistoric times, and that through the same influence the use of images or idols has also increased. This increase in the complexity of rites may be traced to the amalgamation of clans or to a substitution of the fraternities of priesthoods for simple clan ancestor worship. The elaborate character of ceremonial paraphernalia may likewise be due to acculturation,[65] which increases in complication with the lapse of time. [Footnote 65: For instance, the complicated reredos of many of the modern Hopi altars is made of flat wooden slabs, the manufacture of which would be very difficult for a people ignorant of iron. These probably replaced painted stone slabs of simpler character, examples of which have been found in ruins and indeed still survive in some of the oldest rites.] STONE IMPLEMENTS The stone implements from Cliff Palace consist of axes, mauls, paint grinders, pecking stones, metates, balls, flakes, spear and arrow points, and various other articles (pls. 20-22). There is great uniformity in these implements, the axes, for instance, being generally single edged, although a good specimen of double-edged hatchet is in the collection. A fragment of the peculiar stone implement called _tcamahia_[66] by the Hopi was found.