41, 355, 363, 369
perils of travel, 332, 400
flower festival at Genzano, 354-359
M. at Naples and Amalfi, 364-370
condition of travel (1831), 391
to Venice by boat on Po, 391-393
M. at Venice, 393-396
testimonials to M., 2, 393
M. on conditions (1867), 468
_See also_ Rome.

Jackson, Andrew, congratulates Adams on election (1825), ~1~, 263
Jackson. C.T., voyage with M. (1832), ~2~, 3
talks on electrical progress, later claim of giving M. idea of telegraph,
6, 11, 58, 69, 78, 79, 121, 137, 274, 305
Jacobins, Federalist name for Republicans (1805), ~1~, 7
Jarvis, ----, with M. at Peterhoff (1856), ~2~, 357
Jarvis, S.F., to M. (1814) on war from Federalist point of view, ~1~, 157
Jarvis, Mrs. S.F. (Hart), 1, 28;
from M. (1811) on attitude toward art, Copley, West, Elgin Marbles,
London cries, knocking, American crisis, ~1~, 46
to M. (1813) on art in America, 100
Jay, P.A., and Cooper, ~2~, 22
informal club, 451
Jewett, J.S., on M. and Atlantic cable, ~2~, 386
Jewett, William, and origin of Academy of Design, ~1~, 280
Jocelyn, N., travel with M. on continent (1830-31), ~1~, 309, 317
from M. (1864) on attempt to paint, ~2~, 433
Johnson, Andrew, M. on, ~2~, 446
and banquet to M., 468
Johnson, Cave, and telegraph, ~2~, 192, 194, 225, 232
from M. (1845) on Vail, 275
Johnson, William, informal club, ~2~, 451
Johnston, J.T., and M.'s Thorwaldsen, from M. (1868) on it, ~1~, 372-374
Judgment of Jupiter, M.'s painting, ~1~, 178, 179, 196, 199, 215

Kane, J.K., telegraph decision, ~2~, 273, 293
Kane, James, and M., ~1~, 247
Kemble, J.P., M. on, as actor, ~1~, 77
Kendall, Amos, character as M.'s business agent, M.'s confidence, ~2~,
246, 326, 336, 372, 389, 409, 471, 481
first telegraph company, 247
progress, 247
and rival companies, 276
on Jackson's claim, 305
and Smith, 308, 309, 503
and consolidation of lines, 320
and extension of patent, 325
benevolences, 442
M. on death, 481
_Letters to M:_
(1849) on despondency, litigation, ~2~, 301
(1862) on destruction of evidence, 316
(1855) on California telegraph graft, 338
on suspicion of the Vails, 339
on sale of interests, trials of management, 340
(1857) on distrust of cable company, 372
(1858) on foreign gratuity, 392
(1859) on death of Vail, 400
_From M:_
(1847) on mercy to infringers, 272
(1861) on preparation against loss of suits, Smith, 311
(1852) o