Sassafras, 92, 117 



Savannahs, 186, 188, 232, 256, 270, 



279. 282, 286 

 Saw Grass, 174, 177*, 179, 181 

 Scablands, Guttered, 230, 232, 234 

 Scorpion, 274, 279* 

 Scorpions, Whip-tailed, 275 

 Scrublands, 70, 75, 143, 150, 155, 



159, 172, 182, 186, 188, 190, 198, 



200, 213, 218, 232, 242, 244, 246, 



254, 262, 268, 274, 279, 284, 286, 



288 

 Sea Bat. 74*. 75 

 Sea Bear. 53, 252 

 Sea Cow, 185 

 Sea Cucumber, 75 

 Sea Daisy, 182 



Sea Elephant. 36, 248*, 249', 252 

 Sea Grass, 185 

 Sea Lily, 75 

 Sea Lion, 53, 77. 139 

 Sea Otter. 53. 56. 77 

 Sea Pigeon. 139 

 Sea Urchin, 36, 56, 75 

 Seals, 14, 20, 32*, 34, 36, 53, 56. 



77. 139. 248*. 249* 

 Seaweed, 14, 56, 139. 145*. 252 

 Sedges, 21, 28, 33, 40, 49, 86, 127, 



133, 192, 213,242 

 Selenite (geologic), 270 

 Sequoia, Giant. 143, 146°, 147* 

 Serviceberry, 72 

 Sewellel, 142, 

 Sharks, 77 

 Shasta. Mt.. 136, 146 

 Sheep, 22, 60 ', 61 *. 64, 92, 228, 229 * 

 Sheep, Dall's. 60*. 61*. 64 

 Sheep Bighorn. 22. 222. 229*. 236 

 Shellfish. 56, 75, 168, 192 

 Shrew-mole, 142 

 Shrews, 30, 96, 102. 142. 236 

 Shrimps. 77. 117 

 Sidewinder (snake). 236. 267 

 Sierra del Sur. 281. 284* 

 Sierra Juarez. 246 

 Sierra Madre Occidental, 218. 222. 



256. 262, 268, 274. 281. 288 

 Sierra Madre Oriental. 186, 188. 



189, 198, 218, 268, 270, 274, 281, 



282, 283, 284, 288 

 Sierra Nevada, 72, 134, 136, 142- 



144, 146, 206, 222, 230, 232, 237, 



244 

 Silene (plant), 22* 

 Sinkholes, 174 



Siren (amphibian), 91. 130. 163 

 Siskiyou Mts., 141 

 Skeena Mts.. 68 

 Skink (lizard), 236 

 Skua, 30 

 Skunks, 30, 86, 102. 134. 156. 189. 



236.256. 257*. 264 

 Sloth, Giant Ground, 248 

 Smilax, 124 

 Smith Sound, 12 

 Snails, 96, 108, 123, 129, 130, 165, 



180, 194 

 Snakebird (Anhinga). 103, 119 

 Snake R.. 230, 234, 237 

 Snakes, 103, 124*. 129. 155. 163. 



165. 236. 266. 267. 274 



Snapping Turtle. 103 



Snow (Snowfields). 12, 14, 17. 24. 



40. 86, 203, 226 

 Soapberry (tree). 182 

 Soils, 24, 52, 108. 117. 246 

 Solfataras. 289 

 Sonora. 230. 232. 236. 244, 254, 256, 



258, 261, 262, 288 

 Sorrel, 139 



Sourbugs (salt-water), 77 

 South Carolina, 94, 121, 192 

 South Dakota, 159, 192 

 Spanish Dagger. 254 

 Spanish Moss, 126*, 129, 130, 132, 



160, 165, 174. 186 

 Spanish Peaks (Colo). 202 

 Sparrows, 134, 274 

 Sphagnum Moss, 42 

 Spiders, 29, 102, 106, 117, 194, 242, 



275, 278* 

 Split Mt., 203, 213 

 Spoonbill (bird), 190, 191* 

 Spoonbill (fish), 91 

 Springs, hot, 21, 217, 228 

 Spruces, 23, 28, 30, 40, 42, 52, 60, 



64, 71, 72. 137. 139. 141, 144, 



146, 200, 202, 213, 226 

 Squaw Grass, 135* 

 Squirrels, 92, 102, 129, 134, 144, 



146, 213 

 St. Bonaventure Is., 26 

 St. Elias Mts., 60, 218 

 St. Francis Basin, 133 

 St. Helena Canyon, 271, 275 * 

 St. Helen's, Ml., 146 

 St. Joachim Is., 119 

 St. John R. (Maine), 107 

 St. Johns R. (Florida), 174 

 St. Lawrence, Gulf of, 26, 34, 42. 78. 



84. 86,94. 98. 119 

 St. Louis. 41. 82. 86 

 St. Mary's R.. 122. 129, 174 

 Starfish. 74*. 75. 113*. 118 

 Steppes. 148 

 Stikine Mts.. 60. 68 

 Stockton Plateau. 186, 198, 270 

 Succulents. 182, 190. 253 

 Sulphur, 167 

 Sumac. 117 

 Sunfish, 91 

 Superior, L., 40 

 Susquehanna R., 110, 283 

 Suwannee R., 120*, 122, 124, 129, 



174, 176, 185. 208 

 Swallows, 207, 236 

 Swamps, 40, 82, 94, 99, 103, 108, 



117, 122, 124, 127, 129, 130. 133. 



165, 174, 176*. 184*. 185. 239. 



282 

 Swans. 81 * 

 Swift (bird). 2.?6 

 Swift, Collared Spiny (lizard), 196 



Tamarack, 72 



Tamaulipas (Mex.), 188 



Tamazunehale (Mex.), 281, 286 



Tamiskaming, 28 



Tampico (Mex.), 188, 282, 284 



Tanager. Scarlet. 104 ■" 



Tar Pits, 247" 



Tar R., 108, 110, 122, 124 



Tarpon Springs, 179 



Tea Bush, New Jersey, 253 



Teal, 86, 88*, 89*, 179 



Tectites, 33, 34 



Tehuantepec. Isthmus of, 281 



Tennessee. 86. 92. 94 



Ten Peaks. 224 ' 



Ten Thousand Isles (Florida). 174 



Ten Thousand Smokes. Valley of. 60 



Tensas Basin. 133 



Tepic (Mex.). 289 



Terns. 14*. 16, 119, 192, 195 



Teslin, L., 68, 70 



Teton, Grand (Nat. Park), 222 



Texas, 91, 108, 133, 134, 150, 154, 



156, 186, 188, 192, 194, 222, 254. 



281 

 Thalia. 172* 

 Theodore Roosevelt Nat. Memorial 



Park. 159 

 Thistles. 262 

 Thompson R.. 75 

 Thrasher, Brown. 118 

 Tillandsia. 127. 132 

 Timberlands, Western. 121, 122, 



132 

 Toads, 85*, 236 

 Toms R., 112 

 Torreon (Mex.), 281 

 Tortoises. 91. 103. 129. 174. 180. 



215. 236. 262. 286 

 Travertine (geologic). 222* 

 Trees. 21. 23. 28. 40, 52, 68, 72, 92, 



99, 122, 176, 268 

 Trident, Mt., 51° 

 Trillium, Painted, 104' 

 Trinity Mtns., 141 

 Trinity R., 133 

 Tropicales, 281, 283, 288 

 Tropic of Cancer, 174, 262, 282, 283 

 Tropics, 127, 188, 281. 282, 283 

 Trout, 60, 91, 102 

 Tularosa Basin (Valley), 188, 200, 



230, 268, 270, 275 

 Tulip tree, 92 

 Tumbleweeds, 155 ' 

 Tundra, 21, 23°, 24, 38, 40, 51, 70, 



75, 134, 137. 202. 222 

 Turkey. 80. 81 

 Turkey Buzzard. 103. 248 

 Turtles. 91. 103, 129. 286, 288' 

 Tweedsmuir Nat. Park, 68, 70 



Uinta Mts., 203 



Ungava, 10, 12, 24, 25, 26, 28, 29, 



30, 32, 33, 34, 208 

 Uruapan, Mt., 289 

 Utah, 192, 203, 232, 240, 243 



Valdez Glacier, 64, 65* 

 Valles (Mex.), 284 

 Vancouver City, 68, 70 

 Vancouver Is., 52, 68, 70 

 Vegetation (general), 10, 12, 21, 28, 



32, 41, 68, 86, 92, 94. 99, 108, 



117, 122 

 Vera Cruz (Mex), 81. 218, 282 

 Verdin (bird). 264 

 Vermilion Cliffs, 203 

 Vernal (Utah), 213 

 Vines, 95, 124. 282. 283 



Virginia. 36. 92. 119. 163 



Virgin Mts.. 203 



Volcanicity. 21. 51. 56, 146. 202, 



203, 213, 217, 228, 279, 289 

 Volcanos, 51 *, 228, 279. 289 

 Voles. 134. 170. 236 

 Vultures. 236. 248 



Walker. L.. 237, 242 



Walnut (tree), 92 



Walrus. 56*. 57* 



Walrus Islands. 56 



Warblers. 107. 274 



Wasatch Mtns.. 203 



Washington (D. C). 78. 108. 119 



Washington State. 75. 134. 228 



Waterfalls. 28. 42. 281. 286. 288 



Water Lilies. 129. 174 



Water Ouzel (bird). 226 



Wax Plant. 262 



Weasels. 14. 28. 29*. 46. 47*. 49. 



56. 72, 82. 83 *. 95 *. 102. 134. 155. 



226, 236 

 Welder Wildlife Refuge, 188 

 West Indies, 185, 262, 289 

 Whales, 14, 20, 34, 102, 250 

 White Bay, 32 

 White Cliffs (Utah), 203 

 Whitehorse, 70 

 White Mts. (Cal.), 96, 215 

 White Mts. (N. H.), 144 

 White R. (Col), 203, 213 

 White River Badlands, 148*. 159 

 White Sands Nat. Monument, 230, 



268, 275, 276*, 277* 

 Willamette Valley, 134, 136, 139 

 Willows, 21, 24, 28, 40, 72, 92, 124, 



137, 146, 160, 181, 200, 213, 271, 



279 

 Wind River, 218 

 Winnipeg, 38, 40, 44 

 Wisconsin, 86 

 Witchgrass, 155 

 Withlacoochee Bay, 122 

 Wolverine, 29, 64, 72, 73' 

 Wolves, 25, 29, 49, 281, 288 

 Wood Buffalo Nat. Park, 194 

 Woodchuck, 226, 227 ' 

 Woodpeckers. 75, 118, 139, 264 

 Woodrats, 134, 236 

 Wrens, 139, 258', 264, 274 

 Wyoming, 218, 222 

 Wyoming Basin, 196, 198, 203, 213, 



218 



Yakutat Bay, 67 



Yallo-Bally, Mt., 142 



Yampa R.. 203, 213 



Yazoo R., 133, 162 



Yellowstone Nat. Park, 217, 222, 228 



Yellowstone R., 154 



Yew, Western, 72 



Yosemite Valley, 143, 144 



Yucatan, 81, 108 



Yuccas, 72, 254, 261 *, 262, 278. 279 



Yukon Mtns.. 46, 51, 52, 60, 64, 68, 



85, 134, 150, 222 

 Yukon R., 60, 75 



