Wren, desert, how she locks her front door against her bad neighbors, [177]
Wyoming, the ancient bones found in its soil and the wonderful story they told about horses, [266]
Xenophanes, the wise old Greek who first suggested that the mountains had risen out of the sea, [13]
Yosemite Valley, why the rivers of the little valleys have to jump to catch the train, [74]
Transcriber Note
Minor typos corrected. Paragraph break inserted at the top of [page 116] to accommodate placement of image related to the text therein. In the original book, Mt. Fujiyama and Mount Rainier were on [pages 124 and 125] respectively with the caption spanning the two pages. The words "top" and "bottom" were substituted for "left" and "right" respectively for their orientation here. Also, the caption has been updated to say "FOUR THOUSAND".