PORTLAND, OREGON * * * * * Transcriber's note: Obvious punctuation errors were corrected. Page 10, "Moorhouse" changed to "Moorehouse" (Lee Moorehouse 26) Page 51, "monoply" changed to "monopoly" (a foreign monopoly that) Page 54, "descendents" changed to "descendants" (pride of their descendants) Page 60, illustration with caption beginning "Cone of Mount Hood", "scoriae" changed to "scoriæ" (ridge of volcanic scoriæ) Page 78, "pretentions" changed to "pretensions" (with very modest pretensions) Page 81, "scoriae" changed to "scoriæ" (rocks and the scoriæ which) Page 83, "tripple" changed to "triple" (and even triple border) Page 97, double word "to" removed from test. Original read (stairway tilted to to forty) Page 141, italics added to "U. S. Geog. Mag." and "Science" to follow rest of usage (in _U. S. Geog. Mag._, v. 8, pp. 226, and by J. S. Diller in _Science_) Page 142, Erratum, "Captin" changed to "Captain" (to Captain Samuel K. Barlow) Page 143, Indians, Leschi, only the first illustration is of Leschi, the rest of the bolded page numbers are of other people. Page 143, Zigzag River and Canyon, bold text added to "48" as it is an illustration (Canyon, 86, 87, =48=, =78=)