Rieger, 31-33 Rittenhouse, 202 Rives, George, 143 Rives, Reginald, 326 Rockefeller, John D., 375 Rockefeller Foundation, 371 Rockefeller General Education Board, 371 Roentgen, 305, 306, 349, 350 Roentgen rays, 302, 303, 305, 329, 349, 380. _See also_ X-rays Rood, Professor, 133, 134, 199 Routh, Doctor John Edward, 174-180, 182, 185-187, 189, 197, 213 Rowland, Henry Augustus, 183, 184, 256, 287-292, 295, 298, 299, 352-354, 357, 358 Royal Serbian Academy, 317 Rumford, Count (Benjamin Thompson), 202, 218 Rutherford, Sir Ernest, 352, 353 Rutherford Park, N. J., summer at, 111-113 Rutherfurd, Lewis, 122 Rutherfurd, Lewis Morris, 122-129, 133-135, 144 Rutherfurd, Winthrop, 122-126, 144 Ryerson Laboratory, 376 St. Sava, 10-12, 33, 35, 68, 70, 77, 141, 158, 250 School life in Idvor, 10-12; in Panchevo, 12 _Science_, 309 _Scientific American_, 74 Scientific progress and research, 202-206, 218-230, 256-264, 279-310, 311-384 _et passim_ Scientific research, American progress in, 279-310 Scientific research and the universities, 341-343, 358-360, 375, 376 Scotland, summer in, 212-217 Serbian Child Welfare Association of America, 312 Serbs, 1-28, 151-168 _et passim_ Shakespeare, 86, 89, 129 Shepard, Doctor Charles, 108-111, 136 Siemens, Ernst Werner von, 260, 275, 289, 344 Siemens and Halske, 344, 345 Signalling by herdsmen of Idvor, 15-21, 301, 302, 333, 334 Sing Sing prison, 284, 287 Singers, Serbian, 155 Sloan Laboratory, 376 Smith, Professor Monroe, 128 Smithsonian Institution, 272 Snellius, 204 Sobiesky, King, 3 Solar corona, 293 Solar phenomena, electromagnetic theory of, 293, 294 Sorbonne, the, 257 Sound, early herdsman’s experiments, 15-21, 301, 302; transmission, 333 South St. Mary, Md., 58 Special Relativity Theory, 355 Sprague, Frank J., 287 Steel industry, German, 259 Stillwell, Lewis B., 287 Stokes, Sir George Gabriel, 175, 181, 192, 197, 204, 213, 240 Stowe, Harriet Beecher, 39, 105 Strazhilovo, Will, 162 Subways, 289 _Summary and Conclusions_ (Tyndall), 204-208 _Sun_, New York, 74, 93, 94 Swasey, Ambrose, 363-365, 368, 369, 375 Swift Company, 344 Switzerland, experiences in, 146-150, 208, 330, 331 Telegraphy, 234, 300, 347, 348 Telephony, 299, 300, 331-342, 345-348 Tell, William, 147 _Tendencies of Modern Electrical Research_ (Pupin), 309 Tesla, 285 _Theory of Heat_ (Maxwell), 185, 193 Theses for doctor’s degree, 277 Thomas, Sidney Gilchrist, 259, 260 Thompson, Benjamin (Count Rumford), 202, 218 Thomson, Elihu, 284, 286, 287, 289 Thomson-Houston Company, 287, 289 Thomson, Sir John Joseph, 198, 292, 293, 306, 349, 350, 352, 356, 381 Thomson, Sir William (Lord Kelvin), 182, 183, 266, 287, 304, 332, 333, 335, 338, 363 Tilden, 91 Tilton, 105 Tolstoy, 152 Traction, electrical, 286, 287