247
Seabury, Samuel, and Civil War, 2, 416
Search, British, of American ships, 1, 33
Sebastiani, Comte F.H.B., mob attack (1831), 1, 410, 411
Secession, M.’s attitude, 2, 414, 416, 418
Sender, saw-tooth type, 2, 18, 21; first form, 89
  Improvement in portrait, 74, 88, 90
  correspondent or key substituted, 117
“Serenade,” M.’s poem, 2, 495, 496
Serra Palace, M. on, 1, 329. 
Serrell, ——­, and experimental telegraph line, 2, 206, 211, 212
Servants, M. on problem, 1, 281, 292
  on English, 302
Servell, ——­, visual telegraph, 2, 53
Seymour, T.H., with M. at Peterhoff (1856), 2, 356, 357
Shaffner, T.P. letters with M. (1848) on clash with rival company, 2,
    287-289
  and M. at Washington, 323
  from M. (1859) on death of Vail, 400
  on Henry controversy, 402
Shaw, ——­, invention of percussion cap, 2, 472
Shee, Sir M.A., meets M., 1, 308
Shepard, Nancy, M.’s nurse, 1, 3, 2, 72
Sheridan, R.B., lines on Lettsom, 1, 40
Shubrick, W.B., at early exhibition of telegraph, 2, 48
Siddons, Mrs., M. on, 1, 77
Siemens, Werner, and duplex telegraph, 2, 187
  and M. at Berlin, 461
Silliman, Benjamin, M. on “Journal,” 1, 18
  M.’s scientific studies under, 236
  in Berkshires with M., 238, 239
  epitaph for Mrs. Morse, 270, 271
  experiments in photography, 421
  M.’s indebtedness, 2, 58
Simbaldi, Palazzo, musical soiree at (1830), 1, 342
Simpson, John, at M.’s funeral, 2, 512
Sisters of Charity, M. on, 1, 323
Slave-trade, Wilberforce and abolition, 1, 135
Slavery, M.’s defence, 2, 331, 333, 389, 390, 415, 416, 424-426, 432
Smith, Capt. ——­, of Napoleon (1829), 1, 300
Smith, E.F., from M. (1853) on endorsing notes, 2, 319
Smith, E.G., and M. 2, 188
  to M. (1847) on painting for Capitol, 267
Smith, F.O.J., offer to help M., 2, 82
  character, cause of later antagonism, 82, 83
  conditions of partnership, 83
  report to Congress on telegraph, 87
  and patent specification, 89
  goes to Europe with M., 89
  returns, 109
  on Chamberlain, 148
  abandons efforts for telegraph, 151, 165, 168, 178, 181, 186
  and construction of experimental line, and beginning of hostility to M.,
    206, 212, 213, 216, 218, 219, 225
  and formation of companies, 235, 236
  telegraph dictionary, dedication to M., 236-238
  life-long continuation of antagonism, 238, 247, 273, 280, 303, 304, 307,
    312, 320
  and management of partnership, 247
  separation of interests, 308, 309, 312
  denial of injunction against, 319
  and extension of patent, demand of share, 324, 328, 346, 370
  claim to share foreign gratuity, 409-412,