296 XVIII. In All Weathers 317 XIX. The Scenery in the Sky 340     1. Timber-Line 340     2. Above the Timber-Line 345     3. The Work of the Ice King 351     4. High Peaks 356 XX. John Muir 360 XXI. National Parks the School of Nature 366 XXII. Why We need National Parks 378 XXIII. The Trail 388 APPENDIX     A. Act of Dedication of the Yellowstone National Park 397     B. The National Parks at a Glance 400     C. Proposed National Parks 403     D. National Monuments 405     E. Dominion National Parks of Canada 412 BIBLIOGRAPHY 415 GUIDE TO THE NATIONAL PARKS     Introduction 425     Yellowstone National Park 433     Yosemite National Park 444     Sequoia National Park 455     General Grant National Park 459     Mount Rainier National Park 460     Crater Lake National Park 470     Glacier National Park 475     Mesa Verde National Park 488     Rocky Mountain National Park 491