River of Doubt (Rio da Dúvida), 9, 135, 187; preparations for descent of the, 246–248; start down, 249; probable direction of, 262; importance of the, 284; possible course of, 284; formally christened Rio Roosevelt, 286; conjectures as to, 297; losses in rapids of, 307; junction of Rio Cardozo and, 319; is put upon the map, 326, 327; length of the, 339, 342, 349; source of, 349
Rivers, 6, 7, 216; hazards of descending unknown, 221, 309; methods of crossing, 229; 235; courses and outlets of, 237, 238
Rondon, Colonel Candido Mariano da Silva, 8, 9, 51–55; outfit inspected by, 64; 66, 68; characteristics of, 77; 79, 98, 114, 117, 119; explorations of, 132–135; 151–154; people of Matto Grosso befriended by, 156; Indian service of Brazil headed by, 157; Sepotuba River explored and north-western wilderness of Matto Grosso opened by, 157; most important exploring trip of, 158; 171, 181; his stories of past experiences, 184, 187; 188–190, 199 holds a council with the Indians, 200; Utiarity Falls discovered by, 200; gives presents to the Indians, 206; 208, 214; work of, 217; friendship of Nhambiquaras for, 222; 224, 225, 227, 230; early life and education of, 243; 247, 250, 251, 262, 269; his eight months’ exploration, 270; 279, 282, 283, 285; formally christens Rio Roosevelt, 286; 296, 299, 301, 302; trail cut by, 304; 305, 307, 308, 311, 313, 315; his decision as to murderer, 316; 317, 321, 329; reads record of party’s accomplishments, 341; good-by to, 344; 348; Appendix A, 357; charges made against Mr. Savage Landor by, 359–361
Roosevelt, Theodore, is invited to attempt descent of unknown river, 8; reception to, 46, 48; Dom João’s gift to, 113; receives silver-mounted saddle and bridle, 170; unknown river formally christened for, 286; injures his leg, 317; has an attack of fever, 317; his illness increases, 328, 329; quotation from Colonel Rondon’s letter to, Appendix A, note, 360; his suggestions for outfits in South American wilderness, 368–370, 392; his report to General Lauro Müller, 393–395
Rubber-gatherers, 217, 325–327; act as guide, 330; homes of, 331–333; work of, in opening wilderness, 334; 335; hard lives of, 336; adventures of, 338; 350
South America, topography of, 6, 7; ceremony of public functions in, 47; Christianity in, 51, 52, 58; education in, 59; mammalia and avifauna of, 70–72; need for work of collector in, 74; rich bird fauna of, 112; field for work of biggame
hunter and faunal naturalist in, 120; ferocity of certain small animals in, 173; much exploring work to be done in, 177; two great waterfalls of, 199; impostors among explorers of, 261; early semi-civilizations in, 301; social and industrial development of, Appendix A, 353; travellers in, 353, 357; wilderness work to be done in, 358
