OPH AGP SIE IR, exch 
NOTICES. 
This is an important division of the purposes for which pictographs 
are used. The pictographs and the objective devices antecedent to 
them under this head may be grouped as follows: Ist. Notice of visit, 
departure, and direction. 2d. Direction by drawing topographic 
features. 3d. Notice of condition. 4th. Warning and guidance. 
SECTION 1. 
NOTICE OF VISIT, DEPARTURE, AND DIRECTION. 
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Fic. 437.—Petroglyphs at Oakley spring, Arizona. 
Mr. G. K. Gilbert, of the U. 8. Geological Survey, discovered draw- 
ings at Oakley spring, Yavapai County, Arizona, in 1878. He remarks 
that an Oraibi chief explained them to him and said that the “ Mokis 
make excursions to a locality in the canyon of the Colorado Chiquito 
to get salt. On their return they stop at Oakley spring and each Indian 
makes a picture on the rock. Each Indian draws his crest or totem, 
the symbol of his gens (?). He draws it once, and once only, at each 
visit.” Mr. Gilbert adds, further, that— 
There are probably some exceptions to this, but the drawings show its general 
truth. There are a great many repetitions of the same sign and from two to ten will 
329 
