order for portrait, discouraging
conditions, ~2~, 158
(1865) on Yale's celebration of sectional victory, 438
Samson, G.W., and M.'s farewell message to telegraph, ~2~, 485
Sanford, Ahas, "appointment" at Yale, ~1~, 26
Sanford, E.S., from M. (1867) on crooked telegraph manipulations, ~1~, 444
on government purchase, 446
on financial stress, 460
Sanitary Commission, M. on aid for Confederate prisoners of war, ~1~, 428
Santa Anna, A.L. de, at St. Thomas (1858), ~2~, 397
Saul, Leslie's painting, ~1~, 123
Sculpture, M.'s carving machine, ~1~, 248, 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 partnersh