As a fit introduction to the picture of the land as it now appears, there may be presented a brief record of the manner in which it was wrought into its present form. Professor Thomas Condon of Oregon thought that the first land to rise on the Pacific Coast was composed of two islands, one in the region of the Siskiyou Mountains of Northern California and Southern Oregon, and the other in the heart of what are now the Blue Mountains and Saw-tooth Mountains of North-eastern Oregon, South-eastern Washington, and Western Idaho. Other geologists have doubted the existence of the second of these two islands. Those islands, if both existed, were the nuclei of the Pacific Coast region. The rock consisted of the earlier granite, sandstone, and limestone crust of the earth. For long ages these two islands, washed by the warm seas of that early age, and bearing a life now found in the tropics, were slowly rising and widening their boundaries in all directions. Next, or perhaps as early, to respond to the pressure of the shrinking crust of the earth and to appear above the sea, was the vast cordon of pinnacled peaks which compose the present Okanogan and Chelan uplift, granite and porphyry, broken by volcanic outflow. These peaks are veined with gold, silver, and copper. That first age of mountain uplift was ended by the coming on of the age of fire. The granite upheaval of the Blue and the Cascade Mountains was blown apart and cracked asunder by volcanic eruption and seismic force. A vast outflow of basalt and andesite swept westward from the Blue Mountains to meet a similar outflow moving eastward from the Cascades. Thus, throughout the Columbia Basin, the surface is mainly of volcanic rock overlying the shattered fragments of the original earth crust. At many points, however, the primeval granite or sandstone surface was not covered, while at frequent intervals the breaking forth of the fiery floods transformed those original rocks into various forms of gneiss, porphyry, and marble. But the greatest result of the age of volcanic outflow was the elevation of the stupendous isolated snow peaks which now constitute so striking a feature of Columbian landscapes.