N. B.--A number of companies have also been incorporated in California and elsewhere, for the purpose of mining in Arizona. =Composition of Soils in Arizona.= (Accompanying Geological Report, Wheeler Expedition, 1875.) ----------------------+-----------+-----------+-----------+-----------+ | | | |San | | Moquis |Chevelon’s |Mogollon |Francisco | |Villages. | Fork. | Mesa. |Mountains. | ----------------------+-----------+-----------+-----------+-----------+ Predominating rock |Sandstone. |Sandstone. |Sandstone. |Basalt. | | | | | | Sand | 72.04 | 53.10 | 42.20 | 15.95 | Silt, with some clay | 27.96 | 43.55 | 37.98 | 62.97 | Potassa | 0.072 | 0.092 | 0.115 | 0.130 | Soda, | Traces. | 0.010 | Trace. | 0.017 | Lime | 1.665 | 0.319 | 0.153 | 0.684 | Magnesia | } | | 0.029 | Trace. | Alumina | } 2.327 | 2.559 | } 2.013 | 9.729 | Oxide of iron | } | | } | | Phosphoric acid | 0.031 | 0.070 | 0.058 | 0.284 | Sulphuric acid | Trace. | Trace. | Trace. | Trace. | Hydroscopic water | 2.221 | 1.89 | 10.97 | 12.83 | Chemically-bound | | | | | water and | | | | | organic matter | 1,529 | 1.46 | 8.84 | 8.25 | Insoluble in | | | | | hydrochloric acid | 94.60 | 93.55 | 77.81 | 71.09 | ----------------------+-----------+-----------+-----------+-----------+